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Commit Graph

3583 Commits

Author SHA1 Message Date
Ondrej Kozina
33465066c5 polldaemon: fix missing mirror in-sync info with lvmpolld
CONVERTING status flag is a tricky one. It's not set when converting
a non-mirror LV type to the mirror type, i.e.: linear -> two leg mirror.
Also the conversion itself is instant and doesn't require to be polled.
When mirror reaches sync state there's no final update on VG metadata
for lvmpolld to be made thereby report_progress in fact doesn't report
percentage of mirror being converted but percentage of mirror
being in sync. Perhaps we should reword the lvconvert output here.

On the other hand CONVERTING is set while we upconvert the mirror
from i.e. two leg mirror to four leg mirror. In such case the operation
is required to be polled so that lvmpolld can cleanup temporary
conversion log when the conversion is over.

Ignore CONVERTING lv_type for the moment and match LVs only by uuids
during 'mirror conversion'/'waiting for a sync to finish'.
2015-10-20 12:18:55 +02:00
Peter Rajnoha
c3bfe07f2a config: add report/compact_output_cols to control which columns to compact in report output
The new report/compact_output_cols setting has exactly the same effect
as report/compact_output setting. The difference is that with the new
setting it's possible to define which cols should be compacted exactly
in contrast to all cols in case of report/compact_output.

In case both compact_output and compact_output_cols is enabled/set,
the compact_output prevails.

For example:

$ lvmconfig --type full report/compact_output report/compact_output_cols
compact_output=0
compact_output_cols=""

$ lvs vg
  LV    VG   Attr       LSize Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  lvol0 vg   -wi-a----- 4.00m

---

$ lvmconfig --type full report/compact_output report/compact_output_cols
compact_output=0
compact_output_cols="data_percent,metadata_percent,pool_lv,move_pv,origin"

$ lvs vg
  LV    VG   Attr       LSize Log Cpy%Sync Convert
  lvol0 vg   -wi-a----- 4.00m

---

$ lvmconfig --type full report/compact_output report/compact_output_cols
compact_output=1
compact_output_cols="data_percent,metadata_percent,pool_lv,move_pv,origin"

$ lvs vg
  LV    VG   Attr       LSize
  lvol0 vg   -wi-a----- 4.00m
2015-10-16 17:05:54 +02:00
Alasdair G Kergon
0cf787a377 Revert "log: no file for external logging"
This reverts commit 1b1c01a27b.

This caused messages to get dropped instead of logged into the log file.

(The log file and log function are independent at the moment.)
2015-10-13 15:31:57 +01:00
Zdenek Kabelac
1b1c01a27b log: no file for external logging
When external logging is set do not bother creating log file,
as it's not going to be used.
2015-10-13 14:40:44 +02:00
Zdenek Kabelac
72d700b064 toolcontext: do not change already set dm_log
If the dm_log is already set to non-default logger,
avoid to change it.
2015-10-13 14:39:37 +02:00
Zdenek Kabelac
c7b4359ff4 thin: check for overflown pool earlier
Check for pool early before we actually start to modify metadata.
This requires locally active thin-pool.
2015-10-13 14:37:07 +02:00
Peter Rajnoha
5ac81657e5 wiping: make libblkid detect all copies of the same signature if use_blkid_wiping=1
Some signatures are spread around the disk in several copies, mainly for
backup. Make libblkid to detect these extra copies - there was missing
"blkid_probe_step_back" fn call after successful wipe of previous signature
copy.

An example with FAT table which has copies:

$ mkfs.vfat /dev/sda1

Before this patch:

$ pvcreate /dev/sda1
WARNING: vfat signature detected on /dev/sda1 at offset 54. Wipe it? [y/n]: y
  Wiping vfat signature on /dev/sda1.
  Physical volume "/dev/sda1" successfully created

With this patch applied:

$ pvcreate /dev/sda1
WARNING: vfat signature detected on /dev/sda1 at offset 54. Wipe it? [y/n]: y
  Wiping vfat signature on /dev/sda1.
WARNING: vfat signature detected on /dev/sda1 at offset 0. Wipe it? [y/n]: y
  Wiping vfat signature on /dev/sda1.
WARNING: vfat signature detected on /dev/sda1 at offset 510. Wipe it? [y/n]: y
  Wiping vfat signature on /dev/sda1.
  Physical volume "/dev/sda1" successfully created
2015-10-13 12:22:09 +02:00
Peter Rajnoha
38df48d108 vgimportclone: fix vgimportclone with -n to not add number unnecessarily to base VG name
$ vgcreate vgA /dev/sda
  Volume group "vgA" successfully created

$ dd if=/dev/sda of=/dev/sdb bs=1M
$ dd if=/dev/sda of=/dev/sdc bs=1M

(the new VG name is prefix of existing VG name)
$ vgimportclone -n vg /dev/sdb

(the new VG name is suffix of existing VG name)
$ vgimportclone -n gA /dev/sdc

Before this patch:
------------------
(we end up with "vg1" and "gA1" names with the "1" suffix which is not needed)
$ vgs -o vg_name
  VG
  gA1
  vg1
  vgA

With this patch applied:
------------------------
(we end up with "vg" and "gA" names as they're unique already and no extra suffix is added)
$ # vgs -o vg_name
  VG
  gA
  vg
  vgA

Of course, if the name supplied is not unique, the number is added correctly:
$ dd if=/dev/sda of=/dev/sdb bs=1M
$ vgimportclone -n vgA /dev/sdb
$ vgs -o vg_name
  VG
  vgA
  vgA1
2015-10-12 11:11:34 +02:00
Peter Rajnoha
1f30ba6178 vgimportclone: cleanup the script and remove dependency on awk, grep, cut and tr
We can replace the expressions with awk/grep/cut/tr with --select now and
more suitable reporting options and modes. Also, we don't need to check
the temporary lvm.conf generated within vgimportclone script since we're
generating it ourselves now using lvmconfig, not using sed anymore like
it was before (so we can be pretty sure it's correct - we use lvmconfig
now even for generating the lvm.conf itself).
2015-10-09 16:31:02 +02:00
Peter Rajnoha
8733a8d890 report: add vg_missing_pv_count field
We already have pv_count to report number of PVs that a VG has based
on metadata.

This patch exposes the information about how many of these PVs are
missing which is also useful information for a VG. Wwe could count
the sum of pv_missing reporting fields for each PV in the VG before,
but the new field is practical when reporting VG as a whole and there's
no need to process each PV from VG alone.
2015-10-09 16:28:58 +02:00
Peter Rajnoha
e04424e87e report: identify LV hodling sanlock locks as 'private,lockd,sanlock' within lv_role report field
Before this patch:
$ lvs -a -o name,layout,role test/lvmlock
  LV        Layout     Role
  [lvmlock] linear     public

With this patch applied:
$ lvs -a -o name,layout,role test/lvmlock
  LV        Layout     Role
  [lvmlock] linear     private,lockd,sanlock
2015-10-08 13:44:29 +02:00
Alasdair G Kergon
fb957ef322 raid: Add metadata dev information to reports.
Add metadata_devices and seg_metadata_le_ranges report fields.
Currently only defined for raid, but should probably be extended
to all other segment types that don't report all their device
usage in the 'devices' field.
2015-10-02 10:09:28 +01:00
Peter Rajnoha
cb82919b0d systemd: use {local,remote}-fs-pre.target instead of {local,remote}-fs.target
We want most of our units to be started before any local/remote mount
points are mounted - we used {local,remote}-fs.target for this purpose
before, but it was not 100% correct as there's even {local,remote}-fs-pre.target
special systemd unit reserved for this exact purpose.

See also man 7 systemd.special and "local-fs-pre.target"/"remote-fs-pre.target"
description.
2015-09-23 13:30:51 +02:00
Alasdair G Kergon
3a8a37187d post-release 2015-09-22 16:06:07 +01:00
Alasdair G Kergon
629398d0f2 pre-release 2015-09-22 16:00:10 +01:00
Peter Rajnoha
001f747963 lvmconf: set locking_type=2 if external library is requested
Also, set safe use_lvmetad=0 for external locking (locking_type=2)
similarly to locking_type=3.
2015-09-22 13:33:12 +02:00
Alasdair G Kergon
ce80d73684 lvmcache: Remove verbose msg when rescanning dev. 2015-09-21 19:51:15 +01:00
Peter Rajnoha
804c25a81a WHATS_NEW: commits cb8f29d147 - a54b4bba35 2015-09-21 14:28:41 +02:00
Peter Rajnoha
fcfca57e2e format-text: label: fix missing dev assignment for struct label in _text_pv_write
When using lvm shell, some structures which are cached in memory may be
reused. This happens for the struct label (a part of lvmcache_info
structure) when lvmetad is used in which case the PV scan is not
done that would normally overwrite these label structures in memory
and making them up-to-date.

This is all consequence of the fact that struct lvmcache_info and
struct label are not always assigned in the same part of the code.
For example, if lvmetad *is not* used, parts of the struct label are
reassigned in label_read fn while struct lvmcache_info is created
elsewhere. No part of the code reused struct label (and its "dev"
field) before calling label_read fn. That's why the real bug is
hidden when using lvm shell without lvmetad.

However, with lvmetad and lvm shell, the situation is a bit different.
The label_read fn is not called if lvmetad *is* used, hence the
struct label may have ended up not initialized properly.

There was missing assignment for the dev field in struct label
in _text_pv_write fn which caused this problem to appear in
lvm shell with lvmetad, for example:

Before this patch:

lvm> pvcreate /dev/sda
  Physical volume "/dev/sda" successfully created
lvm> pvs /dev/sda
  PV             VG     Fmt  Attr PSize   PFree
  unknown device        lvm2 ---  128.00m 128.00m

With this patch applied:

lvm> pvcreate /dev/sda
  Physical volume "/dev/sda" successfully created
lvm> pvs /dev/sda
  PV         VG   Fmt  Attr PSize   PFree
  /dev/sda        lvm2 ---  128.00m 128.00m

Also, this problem had not appeared before changes introduced
by commits e1a63905d1 through
3a6f91d713 which, among other
things, added proper label field type reporting. Before, label
reporting was the same as using struct physical_volume which
has its own dev field assigned and so this problem was not exposed.
2015-09-15 18:07:32 +02:00
Alasdair G Kergon
0ac10bb23a post-release 2015-09-15 14:09:10 +01:00
Alasdair G Kergon
a729b1aa29 pre-release 2015-09-15 13:17:50 +01:00
Alasdair G Kergon
548c09acfc man: Add all_man Makefile target.
Use 'make all_man' to generate all man pages (regardless of
configuration options) or 'make install_all_man' to install them.
2015-09-15 13:14:16 +01:00
Zdenek Kabelac
e42ee69988 vgimporeclone: use correct cache dir path
Commit 00b36ef06a had a typo
and missed '{' for shell variable, thus command used slightly
different 'tmp' dir name for cache dir (with extra '}').

Such change was unnoticed until a recent fix in persistent
filter, lvm2 missed to update cache file when --config
was specified.

The result was, /tmp dir was accumulating snap.XXXXX} dirs when
running vgimportclose  script.
2015-09-14 09:31:26 +02:00
Zdenek Kabelac
fda853b573 thin: improve swapping of identifiers
Since we may want to swap names when LVs are complex types, we cannot
avoid doing full renames on both LV stacks.
Temporarily use 'pvmove_tmeta' as unused name to prevent validation troubles.
2015-09-11 21:51:11 +02:00
Zdenek Kabelac
280a6275ce thin: lvconvert use passed PVs for _pmspare
When PVs are given on 'lvconvert' respect them when converting
volume to thin-pool and allocating i.e. _pmspare.
2015-09-11 21:48:19 +02:00
Zdenek Kabelac
a631fa20d0 cache: disallow stripes/size for cache pool
ATM allocation can't handle stripping and cache pool allocation.
It's not yet even clear what should be actually result.
Until resolved, disable this option (it's been coredumping
inside allocation anyway).
2015-09-10 17:28:15 +02:00
Zdenek Kabelac
5911fa1d91 cache: warn if caching causes troubles
Certain stacks of cached LVs may have unexpected consequences.
So add a warning function called when LV is cached to detect
such caces and WARN user about them - the best we could do ATM.
2015-09-10 17:27:30 +02:00
Zdenek Kabelac
e1edb5676e lib: when moving segtypes, move LV bits
When we insert layer we also move status flag-bits for certain LV types,
so internal volume_group structure remains consistent.
(Perhaps it's misuse of 'insert_layer' function and we should have
another similar function for this.)

Basically we aim to maintain the same state as after reading fresh
metadata out of volume group.

Currently we when i.e. cache  'raid' LV - this should transfer 'raidLV' flag
to  _corigin LV and cache is no longer a raid.

TODO: bits for stacked devices needs more exact rules.
2015-09-10 17:25:28 +02:00
Peter Rajnoha
2296999cf6 dev-cache: ignore persistent cache if configuration changed
Commit f6473baffc introduced a new
cmd->initialized variable to keep info about which parts of the
cmd_context have been initialized.

A part of this patch was also a change in refresh_filters fn
which checks for cmd->initialized.filters variable and it does
the filter refresh *only* if the filter has already been initialized
before otherwise it's a NOOP (before, the refresh_filters also
initialized filters as a side effect in case it had not been
initialized before which was not quite correct).

However, the commit f6473baffc
did not handle the case in which configuration changes
either via --config argument or when configuration file changed
and its timestamp was higher than the timestamp of the persistent
cache file - the /etc/lvm/cache/.cache.

This patch fixes this issue and it causes the init_filters fn
in lvm_run_command fn to be called with proper value of
"load_persistent_cache" switch even if the configuration changes,
hence causing the persistent cache file to be ignored in this
case.
2015-09-10 16:13:39 +02:00
Peter Rajnoha
026db90621 WHATS_NEW: commit b77497cbd8 2015-09-08 15:37:23 +02:00
Zdenek Kabelac
acfc56957c makefiles: do not generate tags for everyone
Create tags file only on request (make tags).
Also clean file with 'make clean'.
2015-09-07 17:44:04 +02:00
Zdenek Kabelac
fc4f0d3fce configure: support --disable-dependency-tracking
One-time build may enjoy little speedup of build when dependencies are not
calculated.
2015-09-07 17:43:11 +02:00
Zdenek Kabelac
9403edbb93 configure: relocate generated headers
Relocate generated configure.h and lvm-version.h outside
of compilable .c source tree.

The reason is behind - when compiling in builddir != srcdir
the generated file in lib/misc/configure.h was used for all compiled
source file except ones located in lib/misc dir - those would have used
configure.h file located in this dir - if there have existed one (i.e.
from some other build)

This problem was only visible, when srcdir == buildir was used before
trying to use  srcdri != builddir  (as configure.h appeared then in
srcdir).
2015-09-07 17:40:58 +02:00
Alasdair G Kergon
2a022e9e6e post-release 2015-09-05 23:58:40 +01:00
Alasdair G Kergon
f5a3b05c7a pre-release 2015-09-05 23:46:22 +01:00
Peter Rajnoha
55c13f3de4 dev-cache: fix use of uninitialized device status if reading outdated .cache record
As part of fix that came with cf700151eb,
I forgot to add the check whether the result of stat was successful or
not. This bug caused uninitialized buffer to be used for entries
from .cache file which are no longer valid.

This bug may have caused these uninitialized values to be used further,
for example (see the unreal (2567,590944) representing major:minor
pair):

$ pvs
  /dev/abc: stat failed: No such file or directory
  Path /dev/abc no longer valid for device(2567,590944)
  PV               VG   Fmt  Attr PSize   PFree
  /dev/mapper/test      lvm2 ---  104.00m 104.00m
  /dev/vda2        rhel lvm2 a--    9.51g      0
2015-09-04 18:00:29 +02:00
Zdenek Kabelac
20e317cf92 lvcreate: restore missed --monitor
Fix regression from d13239b054.
This patch reorganized whole command option parsing, however
it has lost support to accept --monitor arg.
2015-09-03 23:34:36 +02:00
Zdenek Kabelac
872ea3b987 thin: do not flush when quering for thin percent
Since we may easily get blocked when checking for percentage
of thin-pool - do not flush and just show current values.
This avoids holding VG locked when pool is overfilled.
2015-09-03 23:34:36 +02:00
Zdenek Kabelac
a01eb9c451 thin: detect unusable thins
Try to detect thin-pool which my block lvm2 command from furher
processing (i.e. lvextend).

Check if pool is read-only or out-of-space and in this case thins
will skipped from being scanned (so user may miss some PVs located
on thin volumes).
2015-09-03 23:34:36 +02:00
Zdenek Kabelac
81a9da8f61 filters: swap device_is_usable test
Fix regression introduced with commit:
2fc126b00d

This commit has moved  pv_min_size() test in front
of device_is_usable(). However pv_min_size needs to open device,
so it may have actually get blocked.

So restore the original order and first validate
dm device to be usable for open.

It's worth to note that such check is not 'race-free',
but it usually eliminates 99.99% of problems ;).
2015-09-03 23:34:36 +02:00
Ondrej Kozina
7bbc128c3d lvmpolld: make lvpoll error messages visible
Previously all stderr messages issued by spawned lvpoll command were reported
as INFO only. This made all such messages invisible in syslog or lvmpolld log
while running default configuration.

All lvpoll stderr messages are loged with WARN priority now and lvpoll
command exiting with retcode != 0 is logged with ERROR priority in
syslog and lvmpolld log
2015-09-02 17:24:26 +02:00
Alasdair G Kergon
cc17210bce man: Add install_full_man makefile target.
'make install_full_man' installs all the man pages regardless of
which components were enabled when 'configure' was run.
2015-08-28 13:03:18 +01:00
Alasdair G Kergon
d797f4d590 post-release 2015-08-26 23:13:34 +01:00
Alasdair G Kergon
a37fd93fbb pre-release 2015-08-26 23:11:13 +01:00
Alasdair G Kergon
8740b7cb77 vgdisplay: Drop error message for exported VGs.
Originally when vgdisplay encountered an exported VG it issued a
WARNING.  Commit d6b1de30 replaced this with an error message
but still exited with success (incorrect).  A backtrace was recently
added in commit b193809987.

As vgdisplay already states that the VG is exported in its output,
just drop these messages completely.
2015-08-26 21:11:46 +01:00
Alasdair G Kergon
34c956afc1 make.tmpl: Mark internal sharedlib symbols local.
Since commit 797c18d543 some internal symbols
have been exported in shared libraries by mistake because 'local: *' got
lost.  Fix the shell script not to compare the whole filename with
'Base'
2015-08-26 13:36:23 +01:00
Zdenek Kabelac
9886fd236e cache: lvconvert accepts --cachemode for --cache
All cache args could be specified when caching LV
(means converting LV to cached).

When --cachemode arg is given during cache-pool conversion,
store it in the metadata.

https://bugzilla.redhat.com/show_bug.cgi?id=1255184
2015-08-26 11:24:41 +02:00
Zdenek Kabelac
a4fdfc098d cache: report cache pool attrs also for pools
Since cache-pool actualy keeps info about caching,
display this info for cache-pool LV as well
(matches info for cache LV when cache-pool is asociated with it).
2015-08-26 11:24:41 +02:00
Zdenek Kabelac
81d4c4a84c WHATS_NEW 2015-08-21 15:37:56 +02:00
Heinz Mauelshagen
180f92d3dc WHATS_NEW: Update. 2015-08-20 19:06:47 +02:00
Alasdair G Kergon
d1c65d1b28 post-release 2015-08-17 17:26:20 +01:00
Alasdair G Kergon
be1db6b6c1 pre-release 2015-08-17 17:20:14 +01:00
Zdenek Kabelac
80bc87e377 cache: more comments for new setting 2015-08-17 17:26:39 +02:00
Alasdair G Kergon
623b46a17d device: Don't try to close config file on failure.
$file: open failed: Permission denied
Failed to load config file $file
Attempt to close device '$file' which is not open.
2015-08-17 12:57:01 +01:00
Alasdair G Kergon
b297d78367 WHATS_NEW: Update. 2015-08-16 01:16:16 +01:00
Zdenek Kabelac
533ac4d47d cache: add more validation 2015-08-12 14:33:14 +02:00
Zdenek Kabelac
f0c18fceb4 cache: api update
Change logic and naming of some internal API functions.

cache_set_mode() and cache_set_policy() both take segment.

cache mode is now correctly 'masked-in'.

If the passed segment is 'cache' segment - it will automatically
try to find 'defaults' according to profiles if the are NOT
specified on command line or they are NOT already set for cache-pool.

These defaults are never set for cache-pool.
2015-08-12 14:32:24 +02:00
Zdenek Kabelac
969ee25a74 toollib: get_cache_params
Enhance  get_cache_params() to read common cache args.
2015-08-12 14:11:18 +02:00
Zdenek Kabelac
feb8e9a790 cache: runtime detect default policy
When the policy is not preset in lvm.conf,
detect in runtime whether to use 'mq' or
new available 'smq'.
2015-08-12 14:11:17 +02:00
Zdenek Kabelac
694c88e031 cache: introduce mq and smq profiles
Add 2 demo profiles for mq and smq policies.
Show all support profilable params.

Use with: lvcreate --policy cache-mq ....
2015-08-12 14:11:16 +02:00
Zdenek Kabelac
036d90bba6 cache: add cache_policy cache_settings
Add new profilable configurables:

allocation/cache_policy
allocation/cache_settings

and mark allocation/cache_pool_chunk_size as profilable as well.

Obsolete allocation/cache_pool_cachemode and
introduce new allocation/cache_mode instead.

Rename DEFAULT_CACHE_POOL_POLICY to DEFAULT_CACHE_POLICY.
2015-08-12 14:11:16 +02:00
Zdenek Kabelac
664a9f4830 configure: --clear-need-check-flag needs 0.5.4
Require version 5.4 of cache_check tool where this option
will work correctly.
2015-08-12 14:11:15 +02:00
Thomas Bächler
3ea396e9d2 udev: use += for SYSTEMD_WANTS instead of =
Instead of using = to override SYSTEMD_WANTS, use += to add
the pvscan service.
2015-08-12 09:33:06 +02:00
Alasdair G Kergon
5383697c78 post-release 2015-08-10 01:02:31 +01:00
Alasdair G Kergon
0b05048341 pre-release 2015-08-10 00:40:42 +01:00
Peter Rajnoha
c0629c13fe commands: add new NO_METADATA_PROCESSING flag to selected commands
When a command is flagged with NO_METADATA_PROCESSING flag, it means
such command does not process any metadata and hence it doens't require
lvmetad, lvmpolld and it can get away with no locking too. These are
mostly simple commands (like lvmconfig/dumpconfig, version, types,
segtypes and other builtin commands that do not process metadata
in any way).

At first, when lvm command is executed, create toolcontext without
initializing connections (lvmetad,lvmpolld) and without initializing
filters (which depend on connections init). Instead, delay this
initialization until we know we need this. That is, until the
lvm_run_command fn is called in which we know what the actual
command to run is and hence we can avoid any connection, filter
or locking initiliazation for commands that would not make use
of it anyway.

For all the other create_toolcontext calls, we keep the original
behaviour - the filters and connections are initialized together
with the toolcontext.
2015-07-30 13:56:13 +02:00
Alasdair G Kergon
a5491d3698 dmsetup: Accept vg/lv name format.
If there is exactly one / which is not the first character, check
for /dev/vg/lv (as dm_dir()/../$name i.e. /dev/mapper/../vg/lv.)
2015-07-29 12:24:36 +01:00
Peter Rajnoha
cf700151eb cache: fix regression causing some PVs to bypass filters
This is a regression introduced by commit
6c0e44d5a2 which changed
the way dev_cache_get fn works - before this patch, when a
device was not found, it fired a full rescan to correct the
cache. However, the change coming with that commit missed
this full_rescan call, causing the lvmcache to still contain
info about PVs which should be filtered now.

Such situation may have happened by coincidence of using
old persistent cache (/etc/lvm/cache/.cache) which does not
reflect the actual state anymore, a device name/symlink which
now points to a device which should be filtered and a fact we
keep info about usable DM devices in .cache no matter what
the filter setting is.

This bug could be hidden though by changes introduced in
commit f1a000a477 as it
calls full_rescan earlier before this problem is hit.
But we need to fix this anyway for the dev_cache_get
to be correct if we happen to use the same code path
again somewhere sometime.

For example, simple reproducer was (before commit
1a000a477558e157532d5f2cd2f9c9139d4f87c):

- /dev/sda contains a PV header with UUID y5PzRD-RBAv-7sBx-V3SP-vDmy-DeSq-GUh65M

- lvm.conf: filter = [ "r|.*|" ]

- rm -f .cache (to start with clean state)

- dmsetup create test --table "0 8388608 linear /dev/sda 0" (8388608 is
  just the size of the /dev/sda device I use in the reproducer)

- pvs (this will create .cache file which contains
  "/dev/disk/by-id/lvm-pv-uuid-y5PzRD-RBAv-7sBx-V3SP-vDmy-DeSq-GUh65M"
  as well as "/dev/mapper/test" and the target node "/dev/dm-1" - all the
  usable DM mappings (and their symlinks) get into the .cache file even
  though the filter "is set to "ignore all" - we do this - so far it's OK)

- dmsetup remove test (so we end up with /dev/disk/by-id/lvm-pv-uuid-...
  pointing to the /dev/sda now since it's the underlying device
  containing the actual PV header)

- now calling "pvs" with such .cache file and we get:
$ pvs
  PV                                                                 VG  Fmt  Attr PSize PFree
  /dev/disk/by-id/lvm-pv-uuid-y5PzRD-RBAv-7sBx-V3SP-vDmy-DeSq-GUh65M vg  lvm2 a--  4.00g    0

Even though we have set filter = [ "r|.*|" ] in the lvm.conf file!
2015-07-29 10:19:12 +02:00
Alasdair G Kergon
ce6a0f4469 post-release 2015-07-24 23:21:51 +01:00
Alasdair G Kergon
33eb7d7dfb pre-release 2015-07-24 23:20:42 +01:00
Alasdair G Kergon
705caa8c32 tools: Streamline long option hyphen removal. 2015-07-24 19:45:49 +01:00
Alasdair G Kergon
be66243933 clvmd: Fix freeze if client dies holding locks.
Simply running concurrent copies of 'pvscan | true' is enough to make
clvmd freeze: pvscan exits on the EPIPE without first releasing the
global lock.

clvmd notices the client disappear but because the cleanup code that
releases the locks is triggered from within some processing after the
next select() returns, and that processing can 'break' after doing just
one action, it sometimes never releases the locks to other clients.

Move the cleanup code before the select.
Check all fds after select().
Improve some debug messages and warn in the unlikely event that
select() capacity could soon be exceeded.
2015-07-23 23:10:16 +01:00
David Teigland
ae88bf03a1 lvconvert: fix polling outside of core lvconvert
Recent change to move the polling outside of core lvconvert
code was wrongly using 'lv' and 'vg' structs which can't be
used outside of the core code, which caused seg fault.

Properly isolate all use of lv structs within the core of
the lvconvert code, saving any information necessary,
(esp lvid).  After the core of lvconvert is done, use
the saved information to do polling.

FIXME: the need for is_merging_origin and is_merging_origin_thin
in this patch is ugly, and a cleaner way should be found to deal
with that than what is done here.

Also it effectively removed all hacks in _lvconvert_merge_single
performing ugly: VG reread, unlock, polling, lock sequence.

Moreover all polling operations are postponed after all conversions
are finished.

lvm2 (while locking via lvmlockd) should now be able to run with
or without lvmpolld while performing poll operations originating
in lvconvert command.

Signed-off-by: Ondrej Kozina <okozina@redhat.com>
2015-07-22 10:38:02 +02:00
Peter Rajnoha
2a7c2539c6 wiping: ignore errors during detection if use_blkid_wiping=1 and --force is used
libblkid may return the list of signatures found, but it may not
provide offset and size for each signature detected. This may
happen in case signatures are mixed up or there are more, possibly
overlapping, signatures found.

Make lvm commands pass if such situation happens and we're using
--force (or any stronger force method).

For example:

$ pvcreate /dev/sda1
  Failed to get offset of the xfs_external_log signature on /dev/sda1.
  1 existing signature left on the device.
  Aborting pvcreate on /dev/sda1.

$ pvcreate --force /dev/sda1
  Failed to get offset of the xfs_external_log signature on /dev/sda1.
  Physical volume "/dev/sda1" successfully created
2015-07-21 09:54:20 +02:00
Alasdair G Kergon
500fd8b9bf log: Add DM_ABORT_ON_INTERNAL_ERRORS lvm override.
Recognise DM_ABORT_ON_INTERNAL_ERRORS in the lvm logging function as
well as the default dm function it replaces.
2015-07-20 15:48:59 +01:00
Alasdair G Kergon
b93b85378d alloc: Fix lvextend failure when varying stripes.
A segfault was reported when extending an LV with a smaller number of
stripes than originally used.  Under unusual circumstances, the cling
detection code could successfully find a match against the excess
stripe positions and think it had finished prematurely leading to an
allocation being pursued with a length of zero.

Rename ix_offset to num_positional_areas and move it to struct
alloc_state so that _is_condition() can obtain access to it.

In _is_condition(), areas_size can no longer be assumed to match the
number of positional slots being filled so check this newly-exposed
num_positional_areas directly instead.  If the slot is outside the
range we are trying to fill, just ignore the match for now.

(Also note that the code still only performs cling detection against
the first segment of the LV.)
2015-07-15 23:12:54 +01:00
Zdenek Kabelac
e9e35b011e cache: handle policy_name separately
Keep policy name separate from policy settings and avoid
to mangling and demangling this string from same config tree.
Ensure policy_name is always defined.
2015-07-15 13:10:22 +02:00
Zdenek Kabelac
86a4d47215 cache: move setting of cache policy
Set policy before saving 1st. metadata and avoid unnecessary reload.
Fixes problem when we stored cache-pool without cache-policy set.
2015-07-15 13:10:21 +02:00
Zdenek Kabelac
4a33d57143 thin: fix warning for overprovisioning
When lvm.conf is properly configure for auto resize of overprovisioned
thin-pool volume, avoid showing any warning (2.02.124).
2015-07-15 13:10:21 +02:00
Marian Csontos
738ae4a77f lvmpolld: Fix segfault on 32 bit architectures
Explicit conversions are needed to align writes and reads on the stack.
int64_t is popped from stack while int was pushed.
2015-07-10 16:16:57 +02:00
Peter Rajnoha
cb305b9fc0 lvmconf: fix ignored --startstopservices in lvmconf ... --mirrorservice on systemd
If running lvmconf ... --startstopservice --mirrorservice in systemd
environment, handle lvm2-cmirrord accordingly. A typo in the script
caused the lvm2-cmirrord to not start/stop immediately, it was
only enabled/disabled (so the --startstopservice was ignored in this
case).
2015-07-09 10:40:14 +02:00
Alasdair G Kergon
a421879bb5 post-release 2015-07-07 13:57:13 +01:00
Alasdair G Kergon
3472910177 pre-release 2015-07-07 13:54:37 +01:00
Alasdair G Kergon
88760141da WHATS_NEW: Update. Fix renamed config setting vsn. 2015-07-07 13:20:01 +01:00
Zdenek Kabelac
0ac20a8fdb cache: support clear-needs-check
Support newer cache tool which support new option
--clear-needs-check-flag.

Code does same as for thin_check.
2015-07-07 09:57:27 +02:00
Alasdair G Kergon
c923dee8de configure: Separate sanlock and dlm lock config. 2015-07-06 18:20:20 +01:00
Alasdair G Kergon
b4e8de3a31 post-release 2015-07-03 16:58:24 +01:00
Alasdair G Kergon
36ce97c625 pre-release 2015-07-03 16:34:40 +01:00
Zdenek Kabelac
a900d150e4 thin: move pool messaging from resume to suspend
Existing messaging intarface for thin-pool has a few 'weak' points:

* Message were posted with each 'resume' operation, thus not allowing
activation of thin-pool with the existing state.

* Acceleration skipped suspend step has not worked in cluster,
since clvmd resumes only nodes which are suspended (have proper lock
state).

* Resume may fail and code is not really designed to 'fail' in this
phase (generic rule here is resume DOES NOT fail unless something serious
is wrong and lvm2 tool usually doesn't handle recovery path in this case.)

* Full thin-pool suspend happened, when taken a thin-volume snapshot.

With this patch the new method relocates message passing into suspend
state.

This has a few drawbacks with current API, but overal it performs
better and gives are more posibilities to deal with errors.

Patch introduces a new logic for 'origin-only' suspend of thin-pool and
this also relates to thin-volume when taking snapshot.

When suspend_origin_only operation is invoked on a pool with
queued messages then only those messages are posted to thin-pool and
actual suspend of thin pool and data and metadata volume is skipped.

This makes taking a snapshot of thin-volume lighter operation and
avoids blocking of other unrelated active thin volumes.

Also fail now happens in 'suspend' state where the 'Fail' is more expected
and it is better handled through error paths.

Activation of thin-pool is now not sending any message and leaves upto a tool
to decided later how to finish unfinished double-commit transaction.

Problem which needs some API improvements relates to the lvm2 tree
construction. For the suspend tree we do not add target table line
into the tree, but only a device is inserted into a tree.
Current mechanism to attach messages for thin-pool requires the libdm
to know about thin-pool target, so lvm2 currently takes assumption, node
is really a thin-pool and fills in the table line for this node (which
should be ensured by the PRELOAD phase, but it's a misuse of internal API)
we would possibly need to be able to attach message to 'any' node.

Other thing to notice - current messaging interface in thin-pool
target requires to suspend thin volume origin first and then send
a create message, but this could not have any 'nice' solution on lvm2
side and IMHO we should introduce something like 'create_after_resume'
message.

Patch also changes the moment, where lvm2 transaction id is increased.
Now it happens only after successful finish of kernel transaction id
change. This change was needed to handle properly activation of pool,
which is in the middle of unfinished transaction, and also this corrects
usage of thin-pool by external apps like Docker.
2015-07-03 16:13:14 +02:00
Zdenek Kabelac
622064f00f thin: check for overprovisioning 2015-07-03 16:13:14 +02:00
Peter Rajnoha
9cee94372a report: select: add handler to recognize fuzzy time specification
Recognize date and time specification within selection criteria
that is formulated in a more free-form way besides to the original
basic YYYY-MM-DD HH:MM format that libdevmapper supports.

Currently, this free-form format is recognized for lv_time field.

Users are able to use expressions from this set:
  - weekday names ("Sunday" - "Saturday" or abbreviated as "Sun" - "Sat")
  - labels for points in time ("noon", "midnight")
  - labels for a day relative to current day ("today", "yesterday")
  - points back in time with relative offset from today (N is a number)
    ( "N" "seconds"/"minutes"/"hours"/"days"/"weeks"/"years" "ago")
    ( "N" "secs"/"mins"/"hrs" ... "ago")
    ( "N" "s"/"m"/"h" ... "ago")
  - time specification either in hh:mm:ss format or with AM/PM suffixes
  - month names ("January" - "December" or abbreviated as "Jan" - "Dec")

For example:

$ date
Fri Jul  3 10:11:13 CEST 2015

$ lvmconfig --type full report/time_format
time_format="%a %Y-%m-%d %T %z %Z [%s]"

$ lvs
  LV    VG     Time
  lvol0 vg     Fri 2014-08-22 21:25:41 +0200 CEST [1408735541]
  lvol2 vg     Sun 2015-04-26 14:52:20 +0200 CEST [1430052740]
  root  fedora Wed 2015-05-27 08:09:21 +0200 CEST [1432706961]
  swap  fedora Wed 2015-05-27 08:09:21 +0200 CEST [1432706961]
  lvol1 vg     Tue 2015-06-30 03:25:43 +0200 CEST [1435627543]
  lvol3 vg     Tue 2015-06-30 14:52:23 +0200 CEST [1435668743]
  lvol6 vg     Wed 2015-07-01 13:35:56 +0200 CEST [1435750556]
  lvol4 vg     Thu 2015-07-02 12:12:02 +0200 CEST [1435831922]
  lvol5 vg     Thu 2015-07-02 14:30:32 +0200 CEST [1435840232]

$ lvs -S 'time=yesterday'
  LV    VG   Time
  lvol4 vg   Thu 2015-07-02 12:12:02 +0200 CEST [1435831922]
  lvol5 vg   Thu 2015-07-02 14:30:32 +0200 CEST [1435840232]

$ lvs -S 'time since "June 30"'
  LV    VG   Time
  lvol1 vg   Tue 2015-06-30 03:25:43 +0200 CEST [1435627543]
  lvol3 vg   Tue 2015-06-30 14:52:23 +0200 CEST [1435668743]
  lvol6 vg   Wed 2015-07-01 13:35:56 +0200 CEST [1435750556]
  lvol4 vg   Thu 2015-07-02 12:12:02 +0200 CEST [1435831922]
  lvol5 vg   Thu 2015-07-02 14:30:32 +0200 CEST [1435840232]

$ lvs -S 'time since "noon June 30"'
  LV    VG   Time
  lvol3 vg   Tue 2015-06-30 14:52:23 +0200 CEST [1435668743]
  lvol6 vg   Wed 2015-07-01 13:35:56 +0200 CEST [1435750556]
  lvol4 vg   Thu 2015-07-02 12:12:02 +0200 CEST [1435831922]
  lvol5 vg   Thu 2015-07-02 14:30:32 +0200 CEST [1435840232]

$ lvs -S 'time since "2 July 9AM"'
  LV    VG   Time
  lvol4 vg   Thu 2015-07-02 12:12:02 +0200 CEST [1435831922]
  lvol5 vg   Thu 2015-07-02 14:30:32 +0200 CEST [1435840232]

$ lvs -S 'time since "2 July 1PM"'
  LV    VG   Time
  lvol5 vg   Thu 2015-07-02 14:30:32 +0200 CEST [1435840232]

...and so on.
2015-07-03 10:51:31 +02:00
Peter Rajnoha
454782f1a3 report: fix regression while selecting string fields using synonyms
$ lvs -o name,cache_policy vg/lvol0
  LV    Cache Policy
  lvol0

Before this patch:
$ lvs -o name,cache_policy -S 'cache_policy=undefined' vg/lvol0
  (no match)

With this patch applied:
$ lvs -o name,cache_policy -S 'cache_policy=undefined' vg/lvol0
  LV    Cache Policy
  lvol0
2015-07-02 11:31:54 +02:00
Zdenek Kabelac
7f63fff9c4 display: missed to count with 0
dm_snprintf() returns upon success the number of characters printed
(excluding the null byte used to end output to strings).

So add extra byte to preserve \0.
This fixes regression when displaying more then a single lv name.
2015-07-02 00:10:38 +02:00
Alasdair G Kergon
4c629a5257 locking: Add missing error handling.
Add missing error logging and detection to unlock_vg and callers
of sync_local_dev_names etc.
2015-06-30 18:54:38 +01:00
Alasdair G Kergon
3489e68ef7 post-release 2015-06-30 17:12:56 +01:00
Alasdair G Kergon
a3af8b0626 pre-release 2015-06-30 17:11:21 +01:00
Peter Rajnoha
125cd06698 conf: make time format configurable
Make it possible to define format for time that is displayed.
The way the format is defined is equal to the way that is used
for strftime function, although not all formatting options as
used in strftime are available for LVM2 - the set is restricted
(e.g. we do not allow newline to be printed). The lvm.conf
comments contain the whole list that LVM2 accepts for time format
together with brief description (copied from strftime man page).

For example:
(defaults used - the format is the same as used before this patch)
$ lvs -o+time vg/lvol0 vg/lvol1
  LV    VG   Attr       LSize Time
  lvol0 vg   -wi-a----- 4.00m 2015-06-25 16:18:34 +0200
  lvol1 vg   -wi-a----- 4.00m 2015-06-29 09:17:11 +0200

(using 'time_format = "@%s"' in lvm.conf - number of seconds
since the Epoch)
$ lvs -o+time vg/lvol0 vg/lvol1
  LV    VG   Attr       LSize Time
  lvol0 vg   -wi-a----- 4.00m @1435241914
  lvol1 vg   -wi-a----- 4.00m @1435562231
2015-06-29 14:30:35 +02:00
Ferenc Wágner
a62cd64db6 makefiles: avoid bash == operator syntax, use = instead
Commit e587b0677b broke the build on
systems where /bin/sh is Dash, for example.

Origin patch by Ferenc Wágner <wferi@niif.hu>  changed later to
avoid using shell call, so makefile add 'server' target when
one of  metad or polld daemon is requested.
2015-06-26 22:11:45 +02:00
Peter Rajnoha
c794c163b5 lvmconfig: add --type full to display full tree of settings
The lvmconfig --type full is actually a combination of --type current
and --type missing together with --mergedconfig options used.

The overall outcome is a configuration tree with settings as LVM sees
it when it looks for the values - that means, if the setting is defined
in some config source (lvm.conf, --config, lvmlocal.conf or any profile
that is used), the setting is used. Otherwise, if the setting is not
defined in any part of the config cascade, the defaults are used.

The --type full displays exactly this final tree with all the values
defined, either coming from configuration tree or from defaults.
2015-06-25 13:33:52 +02:00
Alasdair G Kergon
110a0745cd man: Add missing env vars to lvm man page. 2015-06-24 20:43:35 +01:00
Zdenek Kabelac
e217873ed6 snapshot: add synchronization point
Synchronize with udev logic before reusing device as snapshot.

This patch tries to fix the problem with udev, where we manage
to 'active' LV for clearing, then we deactivate such device and
active again as member of 'origin&snapshot' tree all in 1 step.

There needs to be a sync point where udev has time to remove all links,
otherwise we race with scans and we may end-up with mysterious 'free'
links in the system pointing to wrong dm names.

This patch tries to fix failing topology cluster tests..
2015-06-24 15:18:49 +02:00
Peter Rajnoha
a4724350e4 lvmconfig: add --withspaces option
We shouldn't be adding spaces by default in output as that
may be be used already in scripts and especially for the eval
in shell scripts where spaces are not allowed between key
and value!

Add --withspaces option to lvmconfig for pretty output with
more space in for readability.
2015-06-24 13:19:23 +02:00
Alasdair G Kergon
50d70eff35 post-release 2015-06-20 01:05:21 +01:00
Alasdair G Kergon
134b727b4f pre-release 2015-06-20 00:57:35 +01:00
Zdenek Kabelac
3173442984 lvm: move hyphen mangling code
Relocate hyphen code from lvm main into lvm_run_command()
so all command and library user will have it.

Update WHATS_NEW with missing changes.
2015-06-19 09:51:48 +02:00
Zdenek Kabelac
438a65dfdb display: drop allocation from display_lvname
Use of display_lvname() in plain log_debug() may accumulate memory in
command context mempool. Use instead small ringbuffer which allows to
store cuple (10 ATM) names so upto 10 full names can be used at one.

We are not keeping full VG/LV names as it may eventually consume larger
amount of RAM resouces if vgname is longer and lots of LVs are in use.

Note: if there would be ever needed for displaing more names at once,
the limit should be raised (e.g. log_debug() would need to print more
then 10 LVs on a single line).
2015-06-18 18:50:37 +02:00
Zdenek Kabelac
a3e0d830bd thin: support unaligned size of external origin and thin pool
With thin-pool kernel target module 1.13 it's now support usage of
external origin with sizes which are not 'alligned' with chunk size
of thin-pool.

Enable lvm2 support for this and also fix reporting of data_percent
usage for case sizes are not alligned.
2015-06-18 18:50:36 +02:00
Zdenek Kabelac
6f2a617c31 thin: drop limitation for extension of reduced thin volume
Drop check which has prevented resize of reduce thin volume with
external origin. User is supposed to use 'zeroing' to get 'clean'
chunks.
2015-06-18 18:48:59 +02:00
Peter Rajnoha
1e6a926e85 filter: filter-usable: consider snapshot and origin LV as unusable if its component is suspended
Note that this is just a quick fix and it needs more robust fix to
encompass any combination, not just the (old) snapshot one!

This started with this report:
  https://bugzilla.redhat.com/show_bug.cgi?id=1219222

If we have devices/ignore_suspended_devices=1 set based on which we
filter out suspended devices as unusable (or if we ignore suspended
devices by force, e.g. during lvconvert called from dmeventd) and
when we have snapshot and snapshot origin devices in the play, we
need to look at their components unerneath (*-real and *-cow) to
check if they're not suspended. If they are, the snapshot/snapshot
origin is not usable as well and hence it needs to be filtered out
by filter-usable.c code which does suspended device filtering.

Not going into much details here, more details are in the bugzilla
mentioned above. However, this is a quick fix since snapshot
and this exact situation is not the only one. So this is
something that needs to be revisited and fixed properly
with full dm tree and checking the whole stack to state
whether the device at the very top is usable or not.
2015-06-17 13:37:53 +02:00
Peter Rajnoha
a9bc53d5f3 config: fix some settings incorrectly marked as CFG_DEFAULT_COMMENTED instead of CFG_DEFAULT_UNDEFINED and causing segfault
This patch fixes segfault which was caused by incorrectly marking some
settings CFG_DEFAULT_COMMENTED instead of CFG_DEFAULT_UNDEFINED - the
ones which have NULL default value, hence they're really undefined.
A regression caused by a98ceceb1d.

For example:

$ lvmconfig log/file
file="/a"

Before this patch:

$ lvmconfig --type diff
Segmentation fault (core dumped)

With this patch applied:

$ lvmconfig --type diff
log {
	file="/a"
}

The same applies for these settings:

  log/activate_file
  global/library_dir
  global/system_id_file
  <disk_area>/disk_area_id

There were also other settings with NULL default value and marked as
CFG_DEFAULT_COMMENTED instead of CFG_DEFAULT_UNDEFINED, but they were
cfg_array config settings where the NULL value was not causing segfault
(NULL == empty array).
2015-06-17 13:34:31 +02:00
Alasdair G Kergon
f715fefe31 post-release 2015-06-12 21:42:57 +01:00
Alasdair G Kergon
2c64762a40 pre-release 2015-06-12 21:40:56 +01:00
Ondrej Kozina
f0268585dd WHATS_NEW: various updates
commit c069aff21b
commit 8af5f54824
2015-05-26 16:28:04 +02:00
Ondrej Kozina
b244fffc18 WHATS_NEW: update
update for commit: f8bf641095
2015-05-25 10:48:53 +02:00
Lidong Zhong
9d558fbcc2 lvconvert: change how to get failed mirrors number
Commit  b00711e312 improperly
convert _area_missing() replacment and moved check for
AREA_PV seg_type() into same if() section.

Signed-off-by: Lidong Zhong <lzhong@suse.com>
2015-05-22 15:35:36 +02:00
Peter Rajnoha
ba68aed836 scripts: activation generator: do not use --sysinit if lvmpolld used
If lvmetad is not used, we generate lvm2-activation{-early,-net}.service
systemd services to activate any VGs found on the system. So far we used
--sysinit during this activation as polling was still forked off of the
lvm activation command.

This has changed with lvmpolld - we have proper lvmpolld systemd
service now (activated via its socket unit). As such, we don't need
to use --sysinit anymore during activation in systemd environment
as polling was the only barrier to remove the need for --sysinit.
2015-05-21 12:20:30 +02:00
Ondrej Kozina
788e4c5423 WHATS_NEW: various updates 2015-05-19 21:01:24 +02:00
Alasdair G Kergon
2fca6cdeb3 post-release 2015-05-15 23:28:47 +01:00
Alasdair G Kergon
0300730cc9 pre-release 2015-05-15 23:19:29 +01:00
Ondrej Kozina
b91e1ea95e lvmpolld: introduce client functionality
as of now lvmpolld works as client utility for
querying running instance of lvmpolld server
on metadata, state, etc.

Currently the only request implemented is the '--dump'.
It prints out full lvmpolld state (mimics lvmdump -p command).
2015-05-15 20:33:27 +02:00
Alasdair G Kergon
02e10f4ccd libdaemon: Fix socket reuse error paths.
Invert S_ISSOCK validation.
Fail instead of replacing a symlink with a new socket.
After failure, skip calling fcntl with invalid socket_fd.
2015-05-13 13:42:09 +01:00
Ondrej Kozina
cdb7ce6f17 libdaemon: shutdown on idle also in non-systemd environment 2015-05-12 17:16:24 +02:00
Zdenek Kabelac
9c2a6de68f makefiles: runtime spec.inc
Support  CLEAN_DIRS
Var for rpmbuilddir
Use LN_S
Generate spec.inc at runtime for 'make rpm'.
2015-05-12 12:40:37 +02:00
Zdenek Kabelac
725136b57e configure: use_lvmetad/polld configurable
Configure provides proper settings for
use_lvmetad  and use_lvmpolld  conf setttings.

When the build of polld & lvmetad, these settings
are enabled by default unless explicitelly disabled
with --disable-use-lvmetad/--disable-use-lvmpolld.
2015-05-11 14:36:10 +02:00
Ondrej Kozina
e587b0677b lvmpolld: Add standalone polldaemon.
See doc/lvmpolld_overview.txt
2015-05-09 00:59:18 +01:00
Zdenek Kabelac
05934d2538 format_text: properly validate PV size for restore
Use 64bit arithmentic for PV size calculation (Coverity).

Also remove sector shift for compared PV size, since all
values are already held in sectors.

This fixes validatio of PV size when restoring PV
from vg metadata backup file.
2015-05-08 15:12:35 +02:00
Zdenek Kabelac
2cea1c1bd9 pvcreate: fix test for wiping status
Commit ed420fb691 changed
paramet wiped to be a pointer, but missed to switch
to test pointer dereferenced value and instead always
checked 'pointer'.
2015-05-08 13:36:39 +02:00
Zdenek Kabelac
bf5cb4af8e lvmcache: copy just 32bytes
Copy only bytes which fits.

vginfo->vgid  is  [ID_LEN + 1]
vgsummary->vgid has only [ID_LEN]

Reported by Coverity.
2015-05-08 13:31:59 +02:00
Alasdair G Kergon
87578b5d94 man: Fix recursive lvm-config man page. 2015-05-07 12:07:40 +01:00
Ondrej Kozina
9fc6b654f5 WHATS_NEW: update for recent changes
commits:
- bda26acf70
- 76a0dffe6f
2015-05-05 20:52:49 +02:00
Zdenek Kabelac
74a81a4577 lvm2app: call fin_locking in lvm_quit
lvm_quit() function should also close locking.
Fixes unclosed socket connecting clvmd.
2015-05-03 00:43:13 +02:00
Zdenek Kabelac
bc52f07a8f configure: detect /run dir
Access /run directly when system supports it.
2015-05-03 00:42:07 +02:00
Zdenek Kabelac
636bcb020a clvmd: missed newline in help text
Print \n after listing included lock managers.
2015-05-03 00:41:20 +02:00
Alasdair G Kergon
9fb93fcd90 post-release 2015-05-02 01:52:05 +01:00
Alasdair G Kergon
bee2df3903 pre-release 2015-05-02 01:41:17 +01:00
Alasdair G Kergon
796dc9c91c config: Remove newly-exposed default settings.
Reinstate config settings matching the last release until every
case where the generator produces different output has been reviewed
and fresh decisions made about which defaults to expose as protection
against changes in newer releases. We should be trying to reduce, not
increase, this number.
2015-05-02 00:07:12 +01:00
Peter Rajnoha
fc65269d68 lvmconfig: add supporting code for handling deprecated settings
This patch adds supporting code for handling deprecated settings.

Deprecated settings are not displayed by default in lvmconfig output
(except for --type current and --type diff). There's a new
"--showdeprecated" lvmconfig option to display them if needed.

Also, when using lvmconfig --withcomments, the comments with info
about deprecation are displayed for deprecated settings and with
lvmconfig --withversions, the version in which the setting was
deprecated is displayed in addition to the version of introduction.

If using --atversion with a version that is lower than the one
in which the setting was deprecated, the setting is then considered
as not deprecated (simply because at that version it was not
deprecated).

For example:

$ lvmconfig --type default activation
activation {
        ...
	raid_region_size=512
        ...
}

$ lvmconfig --type default activation --showdeprecated
activation {
        ...
	mirror_region_size=512
	raid_region_size=512
        ...
}

$ lvmconfig --type default activation --showdeprecated --withversions
activation {
        ...
	# Available since version 1.0.0.
	# Deprecated since version 2.2.99.
	mirror_region_size=512
	# Available since version 2.2.99.
	raid_region_size=512
        ...
}

$ lvmconfig --type default activation --showdeprecated --withcomments
activation {
        ...
	# Configuration option activation/mirror_region_size.
	# This has been replaced by the activation/raid_region_size
	# setting.
	# Size (in KB) of each copy operation when mirroring.
	# This configuration option is deprecated.
	mirror_region_size=512

	# Configuration option activation/raid_region_size.
	# Size in KiB of each raid or mirror synchronization region.
	# For raid or mirror segment types, this is the amount of
	# data that is copied at once when initializing, or moved
	# at once by pvmove.
	raid_region_size=512
        ...
}

$ lvmconfig --type default activation --withcomments --atversion 2.2.98
activation {
       ...
       # Configuration option activation/mirror_region_size.
       # Size (in KB) of each copy operation when mirroring.
       mirror_region_size=512
       ...
}
2015-04-30 17:55:04 +02:00
Ondrej Kozina
08a82aa940 WHATS_NEW: commit e0a62b8fdc 2015-04-29 17:12:04 +02:00
Peter Rajnoha
8b6b90b073 config: consolidate CFG_UNSUPPORTED and CFG_ADVANCED settings
These settings are in the "unsupported" group:

devices/loopfiles
log/activate_file
metadata/disk_areas (section)
metadata/disk_areas/<disk_area> (section)
metadata/disk_areas/<disk_area>/size
metadata/disk_areas/<disk_area>/id

These settings are in the "advanced" group:

devices/dir
devices/scan
devices/types
global/proc
activation/missing_stripe_filler
activation/mlock_filter
metadata/pvmetadatacopies
metadata/pvmetadataignore
metadata/stripesize
metadata/dirs

Also, this patch causes the --ignoreunsupported and --ignoreadvanced
switches to be honoured for all config types (lvmconfig --type).

By default, the --type current and --type diff display unsupported
settings, the other types ignore them - this patch also introduces
--showunsupported switch for all these other types to display even
unsupported settings in their output if needed.
2015-04-29 16:31:47 +02:00
bkabrda@redhat.com
5d8b31ffad python: python 3 compat patch for lvm2
As provided by rhbz: 1136366
2015-04-29 15:09:56 +02:00
Peter Rajnoha
3be3eb2995 lvmconfig: add --type list and -l|--list
lvmconfig --type list displays plain list of configuration settings.
Some of the existing decorations can be used (--withsummary and
--withversions) as well as existing options/switches (--ignoreadvanced,
--ignoreunsupported, --ignorelocal, --atversion).

For example (displaying only "config" section so the list is not long):

$lvmconfig --type list config
config/checks
config/abort_on_errors
config/profile_dir

$ lvmconfig --type list --withsummary config
config/checks - If enabled, any LVM configuration mismatch is reported.
config/abort_on_errors - Abort the LVM process if a configuration mismatch is found.
config/profile_dir - Directory where LVM looks for configuration profiles.

$ lvmconfig -l config
config/checks - If enabled, any LVM configuration mismatch is reported.
config/abort_on_errors - Abort the LVM process if a configuration mismatch is found.
config/profile_dir - Directory where LVM looks for configuration profiles.

$ lvmconfig --type list --withsummary --withversions config
config/checks - If enabled, any LVM configuration mismatch is reported. [2.2.99]
config/abort_on_errors - Abort the LVM process if a configuration mismatch is found. [2.2.99]
config/profile_dir - Directory where LVM looks for configuration profiles. [2.2.99]

Example with --atversion (displaying global section):

$ lvmconfig --type list global
global/umask
global/test
global/units
global/si_unit_consistency
global/suffix
global/activation
global/fallback_to_lvm1
global/format
global/format_libraries
global/segment_libraries
global/proc
global/etc
global/locking_type
global/wait_for_locks
global/fallback_to_clustered_locking
global/fallback_to_local_locking
global/locking_dir
global/prioritise_write_locks
global/library_dir
global/locking_library
global/abort_on_internal_errors
global/detect_internal_vg_cache_corruption
global/metadata_read_only
global/mirror_segtype_default
global/raid10_segtype_default
global/sparse_segtype_default
global/lvdisplay_shows_full_device_path
global/use_lvmetad
global/thin_check_executable
global/thin_dump_executable
global/thin_repair_executable
global/thin_check_options
global/thin_repair_options
global/thin_disabled_features
global/cache_check_executable
global/cache_dump_executable
global/cache_repair_executable
global/cache_check_options
global/cache_repair_options
global/system_id_source
global/system_id_file

$ lvmconfig --type list global --atversion 2.2.50
global/umask
global/test
global/units
global/suffix
global/activation
global/fallback_to_lvm1
global/format
global/format_libraries
global/segment_libraries
global/proc
global/locking_type
global/wait_for_locks
global/fallback_to_clustered_locking
global/fallback_to_local_locking
global/locking_dir
global/library_dir
global/locking_library
2015-04-29 11:58:14 +02:00
Peter Rajnoha
0ba332e82a refactor: dumpconfig: keep --withcomments to display full comment and use --withsummary for one line summary 2015-04-29 11:14:18 +02:00
Alasdair G Kergon
3f0434057b config: Introduce lvmconfig.
'lvm dumpconfig' now does a lot more than just dumping configuration
information and is no longer only a support tool.  Users now need
to run it to find out about configuration information that has been
removed from the lvm.conf man page so we need to promote this to full
command line status as 'lvmconfig'.  Also accept 'lvm config' and mention
it in the usage information of lvmconf (which should also get merged in
eventually).
2015-04-28 17:00:37 +01:00
Peter Rajnoha
6e4aee0492 report: add lv_ancestors and lv_descendants reporting fields
Show full chain of ancestors and descendants for snapshots
(both thick and thin - in case of thick, the "ancestor" field
is actually equal to "origin" field as snapshots can't be
chained for thick snapshots).

These fields display current state as it is, they do not
display any history! If the snapshot chain is broken in
the middle, we don't report the historical origin (this
is going to be a part of another patch and a different
set of fields or just a switch for existing fields to
show ancestors and descendants with history included).

For example:

(origin --> snapshot)

lvol1 --> lvol2 --> lvol3 --> lvol4
              \
                --> lvol5 --> lvol6 --> lvol7 --> lvol8

$ lvs -o name,pool_lv,origin,ancestors,descendants vg
  LV    Pool Origin Ancestors                     Descendants
  lvol1 pool                                      lvol2,lvol3,lvol4,lvol5,lvol6,lvol7,lvol8
  lvol2 pool lvol1  lvol1                         lvol3,lvol4,lvol5,lvol6,lvol7,lvol8
  lvol3 pool lvol2  lvol2,lvol1                   lvol4
  lvol4 pool lvol3  lvol3,lvol2,lvol1
  lvol5 pool lvol2  lvol2,lvol1                   lvol6,lvol7,lvol8
  lvol6 pool lvol5  lvol5,lvol2,lvol1             lvol7,lvol8
  lvol7 pool lvol6  lvol6,lvol5,lvol2,lvol1       lvol8
  lvol8 pool lvol7  lvol7,lvol6,lvol5,lvol2,lvol1
2015-04-24 11:51:52 +02:00
David Teigland
9b86e8e8f4 dumpconfig: add --ignorelocal
When generating a sample lvm.conf file, we don't want to
include the "local" section, which is kept in lvmlocal.conf.
2015-04-21 14:55:03 -05:00
Ondrej Kozina
de4791c052 WHATS_NEW: update for various commits
add info for various commits, most significant were:

- toollib: close connection to lvmetad after fork
  (fe30658a4d)

- toollib: do not spawn polling in lv_change_activate
  (c26d81d6e6)

- pvmove: split pvmove_update_metadata function
  (65623b63a2)

- lvconvert: move poll code in before refactoring
  (5190f56605)

- pvmove: move poll code in before refactoring
  (a098aa419f)
2015-04-20 10:38:54 +02:00
David Teigland
5cd6381717 dumpconfig: add --unconfigured option
Using this option, default string values that are
configurable are printed as unconfigured values,
e.g. "@CONFDIR@" instead of "/etc".
2015-04-17 11:35:34 -05:00
David Teigland
5f6ac1c812 dumpconfig: add --withfullcomments option
--withfullcomments prints all comment lines for each config option.
--withcomments prints only the first comment line, which should be
a short one-line summary of the option.
2015-04-15 10:56:42 -05:00
Peter Rajnoha
7a4e27eee5 blkdeactivate: check for lvm binary and skip LVM processing if not present
This removes dependency on lvm binary - if it's not present, all LVM
processing is skipped (shouldn't normally happen because if lvm binary
is missing then there's obviously nothing that would activate it, but
let's make sure).

Without this tight dependency on lvm, the blkdeactivate script can
be packaged with libdevmapper/dmsetup (in contrast to lvm as it was
before) and as such the script can still be used to handle other DM
devices.
2015-04-14 13:35:11 +02:00
Peter Rajnoha
695237f2ae WHATS_NEW: previous commit f814d7wq 2015-04-13 15:49:25 +02:00
Peter Rajnoha
f814d763c6 lvmconf: add --enable-halvm, --disable-halvm, --services, --mirrorservice, --startstopservices options and use proper global/use_lvmetad default value
This patch adds new options to lvmconf:

  --enable-halvm (just like --enable-cluster, but configure LVM
                  for use in HA LVM - meaning disabling lvmetad and
                  making sure we have locking_type=1)

  --disable-halvm (just like --disable-cluster, but configure LVM
                   back from HA LVM - meaning enabling lvmetad if
                   it's enabled by default and making sure we have
                   default locking type set)

  --services (causes clvmd and lvmetad services to be enabled or
              disabled appropriately and conforming to the changes
              in lvm configuration we've just made with lvmconf)

  --mirrorservice (in addition to clvmd and lvmetad services, also
                   enable or disable cmirrord service appropriately;
                   this is a separate option because cmirrord is
                   optional and it doesn't need to be always enabled
                   when clvmd is enabled)

  --startstopservices (in addition to enabling or disabling services,
                       start and stop these services immediately)

These options are supposed to help users to make their system ready
for cluster with clvmd (active-active) or HA LVM (active-passive) use
while lvmconf script can handle services as well so users don't need
to bother about setting them manually.

Also, before this patch, we hardcoded global/use_lvmetad=0 as default
value in lvmconf script. Howeverm this default may change by just
flipping the value in config_settings.h and we may forget to edit
the lvmconf. It's better to use lvm dumpconfig --type default global/use_lvmetad
to get the actual default value and use this one instead of hardcoded one.
2015-04-13 15:27:17 +02:00
Alasdair G Kergon
cc26085b62 alloc: Respect cling_tag_list in contig alloc.
When performing initial allocation (so there is nothing yet to
cling to), use the list of tags in allocation/cling_tag_list to
partition the PVs.  We implement this by maintaining a list of
tags that have been "used up" as we proceed and ignoring further
devices that have a tag on the list.

https://bugzilla.redhat.com/983600
2015-04-11 01:55:24 +01:00
Alasdair G Kergon
2872e8c289 alloc: Add A_PARTITION_BY_TAGS to avoid sharing.
Add A_PARTITION_BY_TAGS set when allocated areas should not share tags
with each other and allow _match_pv_tags to accept an alternative list
of tags.  (Not used yet.)
2015-04-10 21:57:52 +01:00
Alasdair G Kergon
a9d48bae2f cache: Set correct vgid when changing PV header.
pv_write is called both to write orphans and to rewrite PV headers
of PVs in VGs.  It needs to select the correct VG id so that the
internal cache state gets updated correctly.

It only affected commands that involved further steps after
the pv_write and was often masked because the metadata would
be re-read off disk and correct itself.

"Incorrect metadata area header checksum" warnings appeared.

Example:
  Create vg1 containing dev1, dev2 and dev3.
  Hide dev1 and dev2 from the system.
  Fix up vg1 with vgreduce --removemissing.
  Bring back dev1 and dev2.
  In a single operation reinstate dev1 and dev2 into vg1 (vgextend).
Done as separate operations (automatically fix-up dev1 and dev2 as orphans,
then vgextend) it worked, but done all in one go the internal cache got
corrupted and warnings about checksum errors appeared.
2015-04-09 21:13:55 +01:00
Zdenek Kabelac
4459413225 clvmd: singlenode signals only when lock changes
There is no benefit in waking-up all the waiters
when there is no actual change in lock state.
This avoid some unnecessarily ping-pong effects like:

 Resource V_LVMTEST15724vg retrying lock in mode:WRITE...
 Resource V_LVMTEST15724vg already locked lockid=40, mode:WRITE
 Resource V_LVMTEST15724vg retrying lock in mode:WRITE...
 Resource V_LVMTEST15724vg already locked lockid=40, mode:WRITE
2015-04-08 23:19:34 +02:00
Zdenek Kabelac
e28e22b9e1 lvmcache: skip drop when vg_write lock is not held
Commit 80f4b4b803
introduced undesirable side-effects for lvm2app user
which happens to be our own python binding.

It appear obtaing pvs list keeps global lock.

So restricting this to VG_GLOBAL READ locks and skip
the drop skip if WRITE lock is held.
2015-04-02 13:38:32 +02:00
Alasdair G Kergon
f1e3e99169 alloc: Log PV tags when reserving areas. 2015-03-26 21:13:26 +00:00
Alasdair G Kergon
9506760c7e datastruct: Add str_list_add_list. 2015-03-26 18:30:37 +00:00
Peter Rajnoha
c9f021de0b metadata: process_each_lv_in_vg: get the list of LVs to process first, then do the processing
This avoids a problem in which we're using selection on LV list - we
need to do the selection on initial state and not on any intermediary
state as we process LVs one by one - some of the relations among LVs
can be gone during this processing.

For example, processing one LV can cause the other LVs to lose the
relation to this LV and hence they're not selectable anymore with
the original selection criteria as it would be if we did selection
on inital state. A perfect example is with thin snapshots:

$ lvs -o lv_name,origin,layout,role vg
  LV    Origin Layout      Role
  lvol1        thin,sparse public,origin,thinorigin,multithinorigin
  lvol2 lvol1  thin,sparse public,snapshot,thinsnapshot
  lvol3 lvol1  thin,sparse public,snapshot,thinsnapshot
  pool         thin,pool   private

$ lvremove -ff -S 'lv_name=lvol1 || origin=lvol1'
  Logical volume "lvol1" successfully removed

The lvremove command above was supposed to remove lvol1 as well as
all its snapshots which have origin=lvol1. It failed to do so, because
once we removed the origin lvol1, the lvol2 and lvol3 which were
snapshots before are not snapshots anymore - the relations change
as we're processing these LVs one by one.

If we do the selection first and then execute any concrete actions on
these LVs (which is what this patch does), the behaviour is correct
then - the selection is done on the *initial state*:

$ lvremove -ff -S 'lv_name=lvol1 || origin=lvol1'
  Logical volume "lvol1" successfully removed
  Logical volume "lvol2" successfully removed
  Logical volume "lvol3" successfully removed

Similarly for all the other situations in which relations among
LVs are being changed by processing the LVs one by one.

This patch also introduces LV_REMOVED internal LV status flag
to mark removed LVs so they're not processed further when we
iterate over collected list of LVs to be processed.

Previously, when we iterated directly over vg->lvs list to
process the LVs, we relied on the fact that once the LV is removed,
it is also removed from the vg->lvs list we're iterating over.
But that was incorrect as we shouldn't remove LVs from the list
during one iteration while we're iterating over that exact list
(dm_list_iterate_items safe can handle only one removal at
one iteration anyway, so it can't be used here).
2015-03-24 08:43:07 +01:00
Alasdair G Kergon
83587f0555 post-release 2015-03-24 02:02:07 +00:00
Alasdair G Kergon
8bb1dfdd32 pre-release 2015-03-24 01:59:35 +00:00
Alasdair G Kergon
6407d184d1 cache: Store metadata size and checksum.
Refactor the recent metadata-reading optimisation patches.

Remove the recently-added cache fields from struct labeller
and struct format_instance.

Instead, introduce struct lvmcache_vgsummary to wrap the VG information
that lvmcache holds and add the metadata size and checksum to it.

Allow this VG summary information to be looked up by metadata size +
checksum.  Adjust the debug log messages to make it clear when this
shortcut has been successful.

(This changes the optimisation slightly, and might be extendable
further.)

Add struct cached_vg_fmtdata to format-specific vg_read calls to
preserve state alongside the VG across separate calls and indicate
if the details supplied match, avoiding the need to read and
process the VG metadata again.
2015-03-18 23:43:02 +00:00
Alasdair G Kergon
5bf74f2997 pvs: Hide inaccessible clustered PVs.
Inaccessible clustered PVs can be hidden from pvs -a in the same way as
foreign PVs, rather than showing them as if they do not belong to a VG.
2015-03-18 23:31:46 +00:00
Alasdair G Kergon
80f4b4b803 cache: Retain orphans while global lock held.
Fixes segfault when 'pvs' encounters two different PVs sharing the same
uuid but one an orphan, the other in a VG.

If VG_GLOBAL is held, there seems no point in doing a full scan more
than once.

If undesirable side-effects show up, we can try restricting this to
VG_GLOBAL READ locks.  The original code dates back to 2.02.40.
2015-03-18 23:20:09 +00:00
Zdenek Kabelac
32a6c11877 pvscan: check sysfs dev entry before rescan
When pvscan --cache --major --minor command is issued from
udev REMOVE event, it basically resulted into a whole device
scan since the device was missing. So avoid such scan
and first check via /sysfs (when available) if such device actually
exists.
2015-03-18 16:19:58 +01:00
Zdenek Kabelac
1260b86b2b config: use timestamp with nanosecond precision
Since kernel 2.6 we can use more precise timestamping,
so e.g. we could better recognize configs are slightly
older then generated .cache file.
2015-03-18 13:42:56 +01:00
Zdenek Kabelac
a10a11bd54 lvchange: disable persistent minors for pools
There is no reason to support persistent major/minor numbers
for pool volumes - it's only meant to be supported for filesystems
(since i.e. nfs may need to keep volume on a persistent device node.)

Support for pools is now explicitely disabled and documented.
2015-03-18 13:42:13 +01:00
Peter Rajnoha
038013cf42 lvmetad: pvscan: do not scan and read ignored MDAs from PVs
Metadata areas which are marked as ignored should not be scanned
and read during pvscan --cache. Otherwise, this can cause lvmetad
to cache out-of-date metadata in case other PVs with fresh metadata
are missing by chance.

Make this to work like in non-lvmetad case where the behaviour would
be the same as if the PV was orphan (in case we have no other PVs
with valid non-ignored metadata areas).
2015-03-16 17:00:36 +01:00
Peter Rajnoha
05f23e7763 systemd: blk-availability.service: add After=iscsi-shutdown.service
The iscsi-shutdown.service is the one responsible for logging out
iscsi sessions so blk-availability.service (running the blkdeactivate
script) should be run before that on shutdown (so we need to use
After=iscsi-shutdown.service because "After" relates to starting
the service and the opposite order is automatically applied on
stopping the service at shutdown).
2015-03-13 12:08:20 +01:00
David Teigland
f5cc96a54e WHATS_NEW vgconvert -M fix 2015-03-10 09:38:43 -05:00
Zdenek Kabelac
04101bc430 lib: drop unneeded vg_read call
Since we take a lock inside vg_lock_newname() and we do a full
detection of presence of  vgname inside all scanned labels,
there is no point to do this for second time to be sure
there is no such vg.

The only side-effect of such call would be a full validation of
some already exising VG metadata - but that's not the task for
vgcreate when create a new VG.

This call noticable reduces number of scans during 'vgcreate'.
2015-03-06 14:05:06 +01:00
Zdenek Kabelac
a9b28a4f21 lib: reduce parsing in vgname_from_mda
Use similar logic as with text_vg_import_fd() and avoid repeated
parsing of same mda and its config tree for vgname_from_mda().

Remember last parsed vgname, vgid and creation_host in labeller
structure and if the  metadata have the same size and checksum,
return this stored info.

TODO: The reuse of labeller struct is not ideal, some lvmcache API for
this functionality would be nicer.
2015-03-06 13:53:13 +01:00
Zdenek Kabelac
7e7411966a lib: avoid reparsing same metadata
When reading VG mda from multiple PVs - do all the validation only
when mda is seen for the first time and  when mda checksum and length
is same just return already existing VG pointer.

(i.e. using 300PVs for a VG would lead to create and destroy 300 config trees....)
2015-03-06 13:53:12 +01:00
Zdenek Kabelac
6f68f4364b devices: avoid extra open() syscall
If the device is already opened by lvm's device cache,
avoid extra syscall opening devices for obtaining its size.
2015-03-06 13:17:39 +01:00
Peter Rajnoha
190d591fbe report: fix seg_monitor field to display monitoring status for thick snapshots and mirrors
The seg_monitor did not display monitored status for thick snapshots
and mirrors (with mirror log *not* mirrored). The seg monitor did work
correctly even before for other segtypes - thins and raids.

Before (mirrors and snapshots, only mirrors with mirrored log properly displayed monitoring status):

[0] f21/~ # lvs -a -o lv_name,lv_layout,lv_role,seg_monitor vg
  LV                                     Layout     Role                             Monitor
  mirror                                 mirror     public
  [mirror_mimage_0]                      linear     private,mirror,image
  [mirror_mimage_1]                      linear     private,mirror,image
  [mirror_mlog]                          linear     private,mirror,log

  mirror_with_mirror_log                 mirror     public                           monitored
  [mirror_with_mirror_log_mimage_0]      linear     private,mirror,image
  [mirror_with_mirror_log_mimage_1]      linear     private,mirror,image
  [mirror_with_mirror_log_mlog]          mirror     private,mirror,log               monitored
  [mirror_with_mirror_log_mlog_mimage_0] linear     private,mirror,image
  [mirror_with_mirror_log_mlog_mimage_1] linear     private,mirror,image

  thick_origin                           linear     public,origin,thickorigin
  thick_snapshot                         linear     public,snapshot,thicksnapshot

With this patch applied (monitoring status displayed for all mirrors and snapshots):

[0] f21/~ # lvs -a -o lv_name,lv_layout,lv_role,seg_monitor vg
  LV                                     Layout     Role                             Monitor
  mirror                                 mirror     public                           monitored
  [mirror_mimage_0]                      linear     private,mirror,image
  [mirror_mimage_1]                      linear     private,mirror,image
  [mirror_mlog]                          linear     private,mirror,log

  mirror_with_mirror_log                 mirror     public                           monitored
  [mirror_with_mirror_log_mimage_0]      linear     private,mirror,image
  [mirror_with_mirror_log_mimage_1]      linear     private,mirror,image
  [mirror_with_mirror_log_mlog]          mirror     private,mirror,log               monitored
  [mirror_with_mirror_log_mlog_mimage_0] linear     private,mirror,image
  [mirror_with_mirror_log_mlog_mimage_1] linear     private,mirror,image

  thick_origin                           linear     public,origin,thickorigin
  thick_snapshot                         linear     public,snapshot,thicksnapshot    monitored
2015-03-05 14:05:34 +01:00
Alasdair G Kergon
56606b5f21 post-release 2015-03-04 14:00:46 +00:00
Alasdair G Kergon
930fa3290d pre-release 2015-03-04 13:49:51 +00:00
Alasdair G Kergon
bfbb5d269a systemid: Add ACCESS_NEEDS_SYSTEM_ID VG flag.
Set ACCESS_NEEDS_SYSTEM_ID VG status flag whenever there is
a non-lvm1 system_id set.  Prevents concurrent access from
older LVM2 versions.
Not set on VGs that bear a system_id only due to conversion
from lvm1 metadata.
2015-03-04 01:16:32 +00:00
Alasdair G Kergon
4e6f3e5162 archives: Preserve format type in file.
format_text processes both lvm2 on-disk metadata and metadata read
from other sources such as backup files.  Add original_fmt field
to retain the format type of the original metadata.
Before this patch, /etc/lvm/archives would contain backups of
lvm1 metadata with format = "lvm2" unless the source was lvm1 on-disk
metadata.
2015-03-04 00:30:26 +00:00
Jose Castillo
57e9e76da4 initscripts: lvm2-monitor: implement status action
Two new functions added in the init script: rh_status and rh_status_q.
First one to be used in status() and second one to be used in start(),
stop(), force_stop(). Check for 'dmeventd' added and print list of
lvs being monitored in status().
2015-02-27 15:38:34 +01:00
Alasdair G Kergon
ee4cd2c737 lvchange: Allow -pr to change kernel only. 2015-02-27 13:38:26 +00:00
Peter Rajnoha
9ea77b788b report: fix handling of reports with pure label fields
Two problems fixed by this patch:
  - PV tags were not recognized at all when using them with pvs
    report that has only label fields (regression since 2.02.105)
  - incorrect persistent .cache file to be generated after pvs
    report that has only label fields (regression since 2.02.106)

These bugs come from the transition from process_each_pv to
process_each_label introduced by commit
67a7b7a87d and commit
490226fc47 and related.
2015-02-27 13:39:25 +01:00
David Teigland
bbaabb8a59 WHATS_NEW: vgimport with lvmetad 2015-02-25 14:59:24 -06:00
Jonathan Brassow
dd0ee35378 cmirror: Adjust region size to work around CPG msg limit to avoid hang.
cmirror uses the CPG library to pass messages around the cluster and maintain
its bitmaps.  When a cluster mirror starts-up, it must send the current state
to any joining members - a checkpoint.  When mirrors are large (or the region
size is small), the bitmap size can exceed the message limit of the CPG
library.  When this happens, the CPG library returns CPG_ERR_TRY_AGAIN.
(This is also a bug in CPG, since the message will never be successfully sent.)

There is an outstanding bug (bug 682771) that is meant to lift this message
length restriction in CPG, but for now we work around the issue by increasing
the mirror region size.  This limits the size of the bitmap and avoids any
issues we would otherwise have around checkpointing.

Since this issue only affects cluster mirrors, the region size adjustments
are only made on cluster mirrors.  This patch handles cluster mirror issues
involving pvmove, lvconvert (from linear to mirror), and lvcreate.  It also
ensures that when users convert a VG from single-machine to clustered, any
mirrors with too many regions (i.e. a bitmap that would be too large to
properly checkpoint) are trapped.
2015-02-25 14:42:15 -06:00
Petr Rockai
7d615a3fe5 cache: Fix a segfault when passing --cachepolicy without --cachesettings. 2015-02-24 11:39:35 +01:00
Alasdair G Kergon
5793ecd165 systemid: Extend --foreign to reporting commands.
Add --foreign to the remaining reporting and display commands plus
vgcfgbackup.
Add a NEEDS_FOREIGN_VGS flag for vgimport to always set --foreign.
If lvmetad is being used with --foreign, scan foreign VGs (currently
implemented as a full PV scan).
Handle these things centrally in lvmcmdline.c.
Also allow lvchange and vgchange -an/-aln to deactivate any foreign
LVs that happen to be active if something went wrong.
Remember to set the system ID when creating a new VG in vgsplit.
2015-02-23 23:41:38 +00:00
Alasdair G Kergon
df227be37c lvm1: Reenable sys ID.
Move the lvm1 sys ID into vg->lvm1_system_id and reenable the #if 0
LVM1 code.  Still display the new-style system ID in the same
reporting field, though, as only one can be set.
Add a format feature flag FMT_SYSTEM_ON_PVS for LVM1 and disallow
access to LVM1 VGs if a new-style system ID has been set.
Treat the new vg->system_id as const.
2015-02-23 23:03:52 +00:00
Alasdair G Kergon
cc5e3dbf24 format_text: Store creation_host_system_id.
Record the current system ID at the time of writing out VG metadata
in the outer section of it alongside the hostname and time.
2015-02-23 17:54:47 +00:00
Alasdair G Kergon
2a1189ebc3 config: Reinstate recursive tags setting.
In 2.02.99, _init_tags() inadvertently began to ignore the
dm_config_tree struct passed to it.  "tags" sections are not
merged together, so the "tags" section in the main config file was
being processed repeatedly and other "tags" sections were ignored.
2015-02-23 17:40:58 +00:00
Alasdair G Kergon
36a6c0df46 systemid: Add built-in systemid command.
Make it easy to find the system ID when testing.
Also show in general debug output.
2015-02-23 17:26:50 +00:00
Peter Rajnoha
f80e7bb61b configure: typo in configure --with-default-raid10-segtype causing it to be unrecognized
AC_ARG_WITH(default-raid10r-segtype --> AC_ARG_WITH(default-raid10-segtype

(...raid10r... --> ...raid10... - extra "r")
2015-02-19 16:19:15 +01:00
Peter Rajnoha
6b4066585f filters: no need to refresh filters/rescan if no signature is wiped during pvcreate at all
Before, we refreshed filters and we did full rescan of devices if
we passed through wiping (wipe_known_signatures fn call). However,
this fn returns success even if no signatures were found and so
nothing was wiped. In this case, it's not necessary to do the
filter refresh/rescan of devices as nothing changed clearly.

This patch exports number of wiped signatures from all the
wiping functions below. The caller (_pvcreate_check) then checks
whether any wiping was done at all and if not, no refresh/rescan
is done, saving some time and resources.
2015-02-17 09:46:34 +01:00
Peter Rajnoha
727c7ff85d pvcreate: switch to "none" dev-ext source during pvcreate
pvcreate code path executes signature wiping if there are any signatures
found on device to prepare the device for PV. When the signature is wiped,
the WATCH udev rule triggers the event which then updates udev database
with fresh info, clearing the old record about previous signature.

However, when we're using udev db as dev-ext source, we'd need to wait
for this WATCH-triggered event. But we can't synchronize against such
events (at least not at this moment). Without this sync, if the code
continues, the device could still be marked as containing the old
signature if reading udev db. This may end up even with the device
to be still filtered, though the signature is already wiped.

This problem is then exposed as (an example with md components):

$  mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda /dev/sdb --run
$  mdadm -S /dev/md0
$  pvcreate -y /dev/sda
Wiping linux_raid_member signature on /dev/sda.
/dev/sda: Couldn't find device.  Check your filters?
$ echo $?
5

So we need to temporarily switch off "udev" dev-ext source here
in this part of pvcreate code until we find a way how to sync
with WATCH events.

(This problem does not occur with signature wiping which we do
on newly created LVs since we already handle this properly with
our udev flags - the LV_NOSCAN/LV_TEMPORARY flag. But we can't use
this technique for non-dm devices to keep WATCH rule under control.)
2015-02-16 15:07:00 +01:00
David Teigland
d3f3878ffd WHATS_NEW for system_id 2015-02-13 10:27:17 -06:00
David Teigland
f5d06efbab vgextend: Use process_each_vg.
Tags and --select are not yet supported because new code is needed
to ensure exactly one VG matches before the VG starts to be processed.
2015-02-13 14:58:51 +00:00
Alasdair G Kergon
e4e703ab60 pvchange: Use process_each_pv.
Invalid devices no longer included in the counters printed at the end.
May now need to use --ignoreskippedcluster if relying upon exit status.
If more than one change is requested per-PV, attempt to perform them
all.  Note that different arguments still handle exit status
differently.
2015-02-12 16:37:47 +00:00
Peter Rajnoha
e52c998c49 toollib: process_each_pv: use cmd->full_filter, not cmd->filter if we're getting full list of PV-capable devices (not just PVs)
When lvmetad is used and at the same time we're getting list of all
PV-capable devices, we can't use cmd->filter (which is used to filter
out lvmetad responses - so we're sure that the devices are PVs already).

To get the list of PV-capable devices, we're bypassing lvmetad (since
lvmetad only caches PVs, not all the other devices which are not PVs).
For this reason, we have to use the "full_filter" filter chain (just
like we do when we're running without lvmetad).

Example scenario:
- sdo and sdp components of MD device md0
- sdq, sdr and sds components of mpatha multipath device
- mpatha multipath device partitioned
- vda device partitioned

=> sdo,sdp,sdr,sds, mpatha and vda should be filtered!

$ lsblk -o NAME,TYPE
NAME            TYPE
sdn             disk
sdo             disk
`-md0           raid0
sdp             disk
`-md0           raid0
sdq             disk
`-mpatha        mpath
  `-mpatha1     part
sdr             disk
`-mpatha        mpath
  `-mpatha1     part
sds             disk
`-mpatha        mpath
  `-mpatha1     part
vda             disk
|-vda1          part
`-vda2          part
  |-fedora-swap lvm
  `-fedora-root lvm

Before this patch:
==================
use_lvmetad=0 (correct behaviour!)
$ pvs -a
  PV                  VG     Fmt  Attr PSize PFree
  /dev/fedora/root                ---     0     0
  /dev/fedora/swap                ---     0     0
  /dev/mapper/mpatha1             ---     0     0
  /dev/md0                        ---     0     0
  /dev/sdn                        ---     0     0
  /dev/vda1                       ---     0     0
  /dev/vda2           fedora lvm2 a--  9.51g    0

use_lvmetad=1 (incorrect behaviour - sdo,sdp,sdq,sdr,sds and mpatha not filtered!)
$ pvs -a
  PV                  VG     Fmt  Attr PSize PFree
  /dev/fedora/root                ---     0     0
  /dev/fedora/swap                ---     0     0
  /dev/mapper/mpatha              ---     0     0
  /dev/mapper/mpatha1             ---     0     0
  /dev/md0                        ---     0     0
  /dev/sdn                        ---     0     0
  /dev/sdo                        ---     0     0
  /dev/sdp                        ---     0     0
  /dev/sdq                        ---     0     0
  /dev/sdr                        ---     0     0
  /dev/sds                        ---     0     0
  /dev/vda                        ---     0     0
  /dev/vda1                       ---     0     0
  /dev/vda2           fedora lvm2 a--  9.51g    0

With this patch applied:
========================
use_lvmetad=1
$ pvs -a
  PV                  VG     Fmt  Attr PSize PFree
  /dev/fedora/root                ---     0     0
  /dev/fedora/swap                ---     0     0
  /dev/mapper/mpatha1             ---     0     0
  /dev/md0                        ---     0     0
  /dev/sdn                        ---     0     0
  /dev/vda1                       ---     0     0
  /dev/vda2           fedora lvm2 a--  9.51g    0
2015-02-12 13:46:11 +01:00
Peter Rajnoha
263f7831df report: define ba_start, vg_free and seg_start fields as DM_REPORT_FIELD_TYPE_SIZE instead of DM_REPORT_FIELD_TYPE_NUM
This makes a difference when using selection criteria based on
these fields - if those fields are defined as DM_REPORT_FIELD_TYPE_SIZE
(in contrast to DM_REPORT_FIELD_TYPE_NUMBER), units are also
recognize in selection clause.

For example:
$ lvs -o+seg_start vg1/lv2
  LV   VG   Attr       LSize  Start
  lv2  vg1  -wi-a----- 12.00m    0
  lv2  vg1  -wi-a----- 12.00m 8.00m

Before this patch:
$ lvs -o+seg_start --select 'seg_start=8m'
  Found size unit specifier but numeric value expected for selection field seg_start.
  Selection syntax error at 'seg_start=8m'.
  Use 'help' for selection to get more help.

With this patch applied:
$lvs -o+seg_start --select 'seg_start=8m'
  LV   VG   Attr       LSize  Start
  lv2  vg1  -wi-a----- 12.00m 8.00m

(the same applies for ba_start and vg_free fields)
2015-02-11 13:57:18 +01:00
Peter Rajnoha
80cca53611 tools: allow -S|--select for vgexport and vgimport 2015-02-10 16:10:17 +01:00
Peter Rajnoha
b93f586954 tools: allow -S|--select for vgdisplay, lvdisplay and pvdisplay without -C
We already allowed -S|--select with {vg,lv,pv}display -C (which
was then equal to {vg,lv,pv}s command. Since we support selection
in toolib now, we can support -S also without using -C in *display
commands now.
2015-02-10 16:09:40 +01:00