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Commit Graph

545 Commits

Author SHA1 Message Date
Zdenek Kabelac
4e0c0417ce cleanup: typo fix 2018-03-19 12:05:57 +01:00
Zdenek Kabelac
689af32313 pools: skip checks when tools are missing
If the tools for checking thin_pool or cache metadata are missing,
issue rather just a WARNING, but let the operation of activation
continue.

This has the advantage, the if user is missing those tools,
but he already started to use thinpool or cacheing, he can
access these volumes with a WARNING.

Also if the user is using too old tools i.e. for CacheV2 format
dmpd tool 0.7 is required - provide informative WARNING and
skip failure from older tool version which can't understand
new format V2.
2018-03-17 23:29:11 +01:00
Zdenek Kabelac
1bd57b4c1d scanning: skip more private devices
Just like lvm2 has internal devices like _tdata which is using UUID with
suffix, there is similar private type of device for crypto device where
they are using CRYPT-TEMP uuid prefix.

Also ignore stratis.
2018-03-13 12:57:33 +01:00
Zdenek Kabelac
0edd89fadc raid: skip frozen raid devices
Some kernel version suffer from bad state transition where a device
steps into 'frozen' mode. Any application that tries to read such
raid gets unfortunatelly bloked.

As some sort of protection try to skip such raid device from being
scanned to minimize chances to block lvm2 command on such scan.

When such device is found, warning gets printed.
2018-03-13 12:57:01 +01:00
Zdenek Kabelac
a8a579b154 cleanup: all tests needs target_type
Simplify code.
2018-03-13 12:53:59 +01:00
Heinz Mauelshagen
0646fd465e dev_manager: always activate RAID SubLVs readwrite
RaidLVs on read_only_volume_list have their SubLVs
activated readonly thus disabling metadata updates
or image resynchronization/recovery.  Bug also causes
automatic repairs to fail.

Fix by always activating the RAID SubLVs readwrite.

Resolves: rhbz1208269
2018-03-12 22:29:54 +01:00
Zdenek Kabelac
6cb2c35d16 cleanup: use log_warn
There message are not causing command failure thus turn them
into warnings.
2018-03-08 10:40:27 +01:00
Zdenek Kabelac
7421252edc snapshot: skip invalid snapshost
When scanning DM device, skip automatically invalid snapshot devices.
They behave just like 'error' device.
2018-03-08 10:39:44 +01:00
Zdenek Kabelac
a6fdb9d9d7 snapshot: keep COW writable for read-only volumes
When snapshot is created in read-only mode with 'lvcreate -s -pr...',
lvm2 still needs to be able to write to layered -cow volume
to store metadata and exceptions blocks.

TODO: in some case we might be able to do full tree with read-only
volume but this probably needs futher validation:
1. checking snapshot header already exist
2. origin & snapshot are both in read-only mode.
2018-03-08 10:39:03 +01:00
Zdenek Kabelac
eb3597acb3 activation: support proper /dev names for component LVs
When LV is activated AS componet LV - ensure there will
be /dev/vgname/lvname  link present for such LV.
2018-03-06 15:42:49 +01:00
Zdenek Kabelac
ca9cbd92c4 activation: add base lv component function
Introduce:

lv_is_component() check is LV is actually a component device.

lv_component_is_active() checking if any component device is active.

lv_holder_is_active() is any component holding device is active.
2018-03-06 15:42:05 +01:00
Zdenek Kabelac
71485ebfc7 thin: regression fix for metadata checking
Fix regression from commit f173274fe4
and restore support for 'disabled' checking via lvm.conf.
2017-12-08 13:21:15 +01:00
Zdenek Kabelac
f173274fe4 cleanup: reorder calling of pool checking tools
Test for zero header before even starting to create argument list for
execution of thin/cache_check tool.
2017-12-07 21:00:39 +01:00
Zdenek Kabelac
2a22576b2d cleanup: drop unused header
DM_UUID_LEN is no longer needed.
2017-12-04 15:38:50 +01:00
Zdenek Kabelac
a42c3a0e90 cleanup: remove debug code 2017-12-01 12:19:09 +01:00
Zdenek Kabelac
7e794b7748 activation: avoid rechecking pvmove node
Use new 3rd. state of trace_pvmove_deps == 2.
In this state we know, we have already seen the node and can skip futher
testing.   Remainging value 1 signals we want to track, and value 0
is for ignoring tracking, but node is still checking in this case.

Reduces large amount of duplicate ioctl queries.
2017-12-01 12:19:09 +01:00
Zdenek Kabelac
8c6fd0933f activation: enhance holders detection
Use code which detectes handlers in a way, which is more
backward-compatible friendly.

Replace read of 'sysfs' uuid entry with dm ioctl call.

Use /sys/block/dm-X/holders path instead of
new path  /sys/dev/block/major:minor/holders.

TODO:
There are few more occurencies of this logic around the code
so some abstract interface should be considered.
2017-11-26 00:31:26 +01:00
Zdenek Kabelac
2a6981a697 activation: automaticaly discover pvmove holders
When pvmove is finished and does 'suspend/resume' on PVMOVE LV,
on resume path committed metadata are already showing 'standalone'
pvmove LV prepared just for removal.

However code should be able to 'resume' preloaded LV there were
participating in pvmove operation.

Previously this was all done in the 'tools' part of lvm2 code.
So the lvconvert upon pvmove finish had to explicitely call 'resume' on every such LV.
Now 'smarted' activation code is able to deduce and combine all information from
the active dm table and committed metadata so single  call resolves
it all in one go.

Internally holders are detected by reading sysfs directory to capture
all needed UUID which are then looked in lvm2 metadata and all such
LVs are automatically collected into dmtree.
2017-11-24 16:09:59 +01:00
Zdenek Kabelac
919744375e pvmove: snapshots need to go with origin device
Enable future support for pvmove for COW LVs.
2017-11-15 11:51:53 +01:00
Zdenek Kabelac
0c9e3e8df2 coverity: add some initilizers
Coverity cannot do a deeper analyzis so let's make just reports
go away and initialize them to 0.
2017-11-07 21:26:11 +01:00
David Teigland
6ac1e04b3a replicator: remove the code
It has not been used in a long time and is not
expected to be used further.
2017-10-13 16:20:42 -05:00
Zdenek Kabelac
0bf836aa14 tidy: prefer not using else after return
clang-tidy: avoid using  'else' after return - give more readable code,
and also saves indention level.
2017-07-20 11:18:29 +02:00
Zdenek Kabelac
ab6f4649a0 dev_manager: add missing validation for usable target_name
Coverity shown path where target_name == NULL would be dereferenced.
2017-06-27 00:27:25 +02:00
Zdenek Kabelac
1bd4b0059b cleanup: use display_percent
Replace occurence of %.2f with call of display_percent function.
2017-06-24 17:44:42 +02:00
Zdenek Kabelac
1095322901 thin: properly check for status for max sizes metadata
When metadata LV size was over DM_THIN_MAX_METADATA_SIZE sectors,
the info() routine was incorrectly trying to match bigger size,
while we do never pass any bigger device.

Fixing a case, where lvs should be displaying status for metadata
LV with 16GB size.
2017-04-12 21:34:08 +02:00
Heinz Mauelshagen
547bdb63e1 dev_manager: remove reshape message
The dm-raid target doesn't support a "reshape" message.
2017-03-03 22:10:21 +01:00
Heinz Mauelshagen
e2354ea344 lvconvert: add infrastructure for RaidLV reshaping support
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces infrastructure prerequisites to be used
by raid_manip.c extensions in followup patches.

This base is needed for allocation of out-of-place
reshape space required by the MD raid personalities to
avoid writing over data in-place when reading off the
current RAID layout or number of legs and writing out
the new layout or to a different number of legs
(i.e. restripe)

Changes:
- add members reshape_len to 'struct lv_segment' to store
  out-of-place reshape length per component rimage
- add member data_copies to struct lv_segment
  to support more than 2 raid10 data copies
- make alloc_lv_segment() aware of both reshape_len and data_copies
- adjust all alloc_lv_segment() callers to the new API
- add functions to retrieve the current data offset (needed for
  out-of-place reshaping space allocation) and the devices count
  from the kernel
- make libdm deptree code aware of reshape_len
- add LV flags for disk add/remove reshaping
- support import/export of the new 'struct lv_segment' members
- enhance lv_extend/_lv_reduce to cope with reshape_len
- add seg_is_*/segtype_is_* macros related to reshaping
- add target version check for reshaping
- grow rebuilds/writemostly bitmaps to 246 bit to support kernel maximal
- enhance libdm deptree code to support data_offset (out-of-place reshaping)
  and delta_disk (legs add/remove reshaping) target arguments

Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
2017-02-24 05:20:58 +01:00
Zdenek Kabelac
12bbfbe89d comment: update
Fix can -> cannot.
2017-02-05 17:55:37 +01:00
Zdenek Kabelac
fb3f4ed72d cleanup: rename to use track_ prefix
Since we use 'track_' prefix for other deps tracking,
convert skip_external_lv to use same logical meaning.
(just converts  1->0  0->1)
2017-02-05 17:55:37 +01:00
Zdenek Kabelac
1f5dde38a7 cleanup: more use of lvseg_name
Use existing function lvseg_name().
2017-01-03 14:55:16 +01:00
Zdenek Kabelac
8c17233af5 debug: add debug message showing new lv
Make trace easier to follow knowing which LV was added to dtree.
2016-12-18 19:38:51 +01:00
Zdenek Kabelac
034931f68d activate: further _info API refinement
Another cleanup of internal _info() API simplifying code.
Also make sure 'error' on _info() call is properly passed upward
(return 0 is error path).
2016-12-18 19:38:51 +01:00
Zdenek Kabelac
69434c2eca cache: improve activation with -real
When cache volume may be converted from normal to -real layer LV
we need to improve logic for call cache_check.

With this patch, we register call for cache_check only when metadata LV
is not yet present in active table slot (should match initial table
load).
This avoids unwanted checking when cache would become layer device
online.
2016-12-18 19:30:50 +01:00
Zdenek Kabelac
bdfc96cb08 raid: fix activation of tracked image
Activation of raid has brough up also splitted image with tracing
(without taking lock for this).

So when raid is now activate - such image is not put into
table (with _rmeta).  When user needs such device, just active it.
2016-12-18 19:10:38 +01:00
Zdenek Kabelac
3331199cc9 cleanup: simplier code 2016-12-05 17:12:42 +01:00
Zdenek Kabelac
81ef4eb4f8 cleanup: indent and messsages updates 2016-12-05 17:12:42 +01:00
Zdenek Kabelac
114f7e6285 dev_manager: use setup_task_run for mknod
Simplify info run for use only for INFO & STATUS.
Drop handling MKNODES within _info_run() call
and use more advanced _setup_task_run() directly.

This allows to further simplify _info_run().
2016-12-05 17:12:39 +01:00
Zdenek Kabelac
5163b8f697 dev_manager: extend setup_task
Integrate also query for inactive table and
handle dm_task_run() and dm_task_get_info()
(thus switching to setup_task_run)

Add one exception case for DM_DEVICE_TARGET_MSG.

This allows further shortening and simplification of all
other users of this function.
2016-12-05 17:11:49 +01:00
Zdenek Kabelac
ed93f0973a activation: lv_info_with_seg_status unify status selection
Start moving selection of status taken for a LV into a single place.
The logic for showing info & status has been spread over multiple
places and were doing too complex decision going agains each other.

Unify selection of status of origin & cow scanned device.

TODO: in future we want to grab status for LV and layered LV and have
both statuses present for display - i.e. when 'old snapshot'
of thinLV is takes and there is ongoing merge - at some moment
we are not capable to show all needed info.
2016-12-05 17:09:13 +01:00
Zdenek Kabelac
5ba2d58d28 activation: improve error handling for status reading
When lvm2 wants to see a status, it needs to validate,
segment for status reading is matching whan lvm2 expects in
metadata.

Also ensure status failure will not cause '0' from info reading
when actual info was collected properly.
Failure in 'status' reading is considered to be
a 'log_warn()' event only.
2016-12-05 17:05:17 +01:00
Zdenek Kabelac
4a4b22e114 activation: status check switch to warn
When we can't parse status, switch to warning as this is not
considered an errornous case.  LVS is not supposed to return
error status code when  device is not what it's been expected to
be - but it should be WARNING a user there is something unexpected.
2016-12-05 17:04:24 +01:00
Zdenek Kabelac
1a4f13eb6e cleanup: add some dots and use display_lvname
Just some more VG/LV printing.
2016-11-25 15:01:27 +01:00
Zdenek Kabelac
1d58074d9f debug: more stacktrace corrections
Continue previous patch dropping some unneeded stack traces
after printed log_error/warn messages.
2016-11-25 14:58:28 +01:00
Zdenek Kabelac
a7691cdebb cleanup: debug trace and indent change 2016-11-11 16:58:20 +01:00
Zdenek Kabelac
1bdcb01f63 cleanup: add dots to debug messages 2016-11-11 16:58:20 +01:00
Zdenek Kabelac
d8fc4d093e conf: support zero for missing_stripe_filler
Make it easier to replace missing segments with 'zero' returning
target - otherwise user would have to create some extra target
to provide zeros as /dev/zero can't be used (not a block device).

Also break code loop when segment is found and make it an INTERNAL_ERROR
where it's missing.
2016-11-11 16:58:16 +01:00
Zdenek Kabelac
05dc70e22e cache: fixed copy&paste from last commit 2016-09-09 21:26:38 +02:00
Zdenek Kabelac
454b891f6d cache: fix reporting of dirty cache
When cache has zero used blocks it's been wrongly reported as 100.00% dirty.
Fix it and report 0.00.
2016-09-09 20:53:36 +02:00
Zdenek Kabelac
458918b319 thin: fix link validation for unused thin-pool
This patch fixes link validation for used thin-pool.
Udev rules correctly creates symlinks only for unused new thin-pool.
Such thin-pool can be used by foreing apps (like Docker) thus
has  /dev/vg/lv link.
However when thin-pool becomes used by thinLV - this link is no
longer exposed to user - but internal verfication missed this
and caused messages like this to be printed upon 'vgchange -ay':

The link /dev/vg/pool should have been created by udev but it was not
found. Falling back to direct link creation.

And same with 'vgchange -an':
The link /dev/vg/pool should have been removed by udev but it is still
present. Falling back to direct link removal.

This patch ensures only unused thin-pool has this link.
2016-07-01 00:44:46 +02:00
Zdenek Kabelac
f7f395667e lvstatus: enhance seg_status to handle snapshot
Add more code to properly store status for snapshot segment
maintaining lvm2 fiction of COW and snapshot internal volumes.

The key issue here is however not though-through reporting
logic - as there is no single answer for whole line state.
It not counting with layer and we may need few more ioctl to
cover all reporting needs depending upon what is actually
needed.

In reality we need to 'cache' more ioctl status queries for
individual LVs and their segments (so they checked at most once).

The other 'hard' topic for conversion is mirror segment handling.

Also we definitelly need to relocate some logic into segment's methods,
yet it might be complex as we have not clear border between targets.

TODO: define more clearly how are reporting fields defined in case
we 'stack' volumes like   -   cache of stacked  thin LV snapshot origin.
2016-05-27 15:47:24 +02:00
Zdenek Kabelac
a4f8d1165c setup_task: add with_flush
To get better control when flushing is used add extra arg when
setting up dm task.

By default now check dm device status without flush.
(At this moment this should effect only thin and cache volumes).

Also switch dev_manager_thin_pool_status() to use more
readable 'flush' parameter instead of 'no_flush'.
2016-05-27 15:47:24 +02:00
Alasdair G Kergon
b896f7de1e raid0: Standardise meta_areas checks before access. 2016-05-23 22:55:13 +01:00
Alasdair G Kergon
bf8d00985a raid0: Add raid0 segment type.
This remains experimental and quite restrictive so should only be used
for testing at this stage.  (E.g. lvreduce is not supported.)
2016-05-23 16:46:38 +01:00
Zdenek Kabelac
9c083d34af debug: use display_lvname
Add some tracing message
2016-05-19 18:40:14 +02:00
Zdenek Kabelac
99e96f3ce9 coverity: fix error paths
Patch 74e704bb44 missed to update
error path. Since now we just need to 'return_0' as 'dmt is NULL
and thus may not be destroyed.
2016-04-22 01:12:34 +02:00
Zdenek Kabelac
7e5881dd13 snapshot: improve merge
Improve code for snapshot merge for readabilty
and also reduce number of tests needed to decide
if merging can or cannot be started.

(Further improving 9cccf5245a)
2016-04-18 23:05:17 +02:00
Zdenek Kabelac
f5cf6cc9ed debug: fix error message
log_error is replaced with warn since the result
of function is not result in command error.
2016-04-18 12:32:56 +02:00
Zdenek Kabelac
9cccf5245a thin: improve recognizing of merge in progress
Rewrite too condensed condition in more readable form,
wher decision are clearly separated and commented and
also add debug messages for them.
2016-04-18 12:32:52 +02:00
Zdenek Kabelac
e2cd882f2e thin: check runtime table line for merging
To recognize in runtime if we are merging or not
to make consistent decision between suspend and resume
add function to parse thin table line when add
merging thin device to the table.
2016-04-18 11:18:35 +02:00
Alasdair G Kergon
6954de22e2 activate: Improve snapshot merge initiation
A snapshot merge into its origin cannot be initiated while the devices
are in use.  If there is outside interference (such as from udev),
the suspend (preload) and resume stages can reach conflicting decisions
about whether or not to proceed.

Try to make the logic more robust by checking the inactive or live
table during resume.  (This is still not perfect.)
2016-04-15 02:33:38 +01:00
Alasdair G Kergon
150cff9cce activation: Log when pending snap merge postponed. 2016-04-14 23:42:56 +01:00
Zdenek Kabelac
1be74cfd7f cleanup: gcc warn about comparing int with uint 2016-04-12 11:47:51 +02:00
Zdenek Kabelac
5cfa6cb347 cleanup: simplier to read condition
Make more readable what we are looking for and just test for
KERNEL version at one place.
2016-04-08 20:20:16 +02:00
Zdenek Kabelac
74e704bb44 cleanup: reuse _setup_task
Shorten code and use common code from _setup_task.
Reorder naming of major:minor sscanf (as later it's been
also used swapped there was no real bug).
2016-04-08 20:20:16 +02:00
Zdenek Kabelac
a09d65891f dev_manager: device_is_usable does not flush
When scanning if device is being usable as PV,
we call STATUS - but this status should not cause
any flushing.
Skip also open_count information as it's not needed.
2016-04-08 20:20:04 +02:00
Alasdair G Kergon
f40dfb48ad activation: Skip another non-prefixed info ioctl.
_percent() also does a lookup by dm uuid.
Also get kernel version from cmd->kernel_vsn.
2016-04-08 16:27:12 +01:00
Zdenek Kabelac
8b2108e6b1 activation: do not check for devs without LVM-
Devices without "LVM-" uuid prefix have been generated by very old
version of lvm2 2.00 and 2.01.
Since version 2.02 all lvm2 devices are using prefix "LVM-".

However checking for present of ancient non prefixed devices does
take extra IOCTL per every call and for majority of todays user
it will not find anything new.

So use the assumption that users with kernel 3.X and newer are not
really using such old versions of lvm2 (year <2005) and with their
new kernel they are also using new version of lvm2 and skip
checking for them.

This change also makes trace logs more readable.
2016-04-07 22:32:08 +02:00
Zdenek Kabelac
5b2227c2c1 preload: preserve flushing state
When leaving preload routine it should not altet state of flush required
when it's been already set to 1 and drop it to 0.

The API here is unclean, but current usage expects the same
variable pointer is for all preload calls and combines 'flush_required'
across all of them.
2016-04-06 11:31:02 +02:00
Zdenek Kabelac
7c1937f8df suspend: fix suspend with noflush limitation
Commit 844b009584 tried to move
limit for usage of noflush to 'preload' however this was not
correctly processed.

Intead explicitly check for which types we do not want noflush
and also add debug message in this case.
2016-04-06 11:31:02 +02:00
Zdenek Kabelac
d4c03cf7b2 mirror: fix flushing for mirror target
Fix regression caused by commit ba41ee1dc9.
The idea was to use no_flush for changed device only for thin volumes
and thin pools but also to merge this with change made in commit
844b009584.

However the resulting condition has caused misbehavior for the mirror
suspend - as that has been before the ONLY allowed target type
that could have been suspended with noflush.

Result was badly working repair for --type mirror that has been
passing 'flush' to the repaired mirror target whenever preload
wrongly set flush_required.

The origin code has required the flush_required to be set whenever
deivce size is changed.

Now it first detects if device size got smaller
'dm_tree_node_size_changed(root) < 0' - this requires flush.
Otherwise it checks device is not thin volume nor thin pool and its
size has changed (got bigger) and requires flush.

This mean upsize of thin-pool or thin volume will not require flush.
2016-04-06 11:31:02 +02:00
Alasdair G Kergon
60befab773 Revert "thin: display highest mapped sector"
This reverts commit fc7dacaa4c.

Let's put this information into a separate field.  It doesn't meet the
definition of the existing field.
2016-04-01 20:09:38 +01:00
Zdenek Kabelac
5034bb8d18 cleanup: use local var to read struct 2016-03-31 12:21:40 +02:00
Zdenek Kabelac
b10253ab4d cleanup: use TARGET define 2016-03-31 12:21:40 +02:00
Zdenek Kabelac
fc7dacaa4c thin: display highest mapped sector
Use  meta%  to expose highest mapped sector in thinLV.
so showing there 100.00% means thinLV maps latest sector.

Currently using a 'trick' with total_numerator to pass-in
device size when  'seg==NULL'

TODO: Improve device status API per target - current 'percentage'
is not really extensible.
2016-03-31 12:20:43 +02:00
Zdenek Kabelac
8bbec41bd4 thin: no thin-pool flush when reading metadata status
Previous fix missed the fact the we do query for 'percent' with
seg value either set or unset (API overload...)
When 'seg' was unset, we still issue flush with status.
Fix it by cheking segtype by target_type.

As we check for segtype - we could also skip whole percentage
if the 'segtype' is unknown by code directly.

Reported-by: Ming-Hung Tsai <mingnus gmail com
2016-03-31 12:15:47 +02:00
Alasdair G Kergon
1216efdf15 activate: Use macros for target and module names. 2016-03-22 17:46:15 +00:00
Zdenek Kabelac
5c415afd85 cache: check for cache fail during flush
Just WARN if the cache can't be flushed because it's failed.
2016-03-10 18:38:53 +01:00
Zdenek Kabelac
ddfec5b51a coverity: use same arithmetic for both major and minor
Run all arithmetic in the same 'dev_t' type.
2016-02-23 21:40:17 +01:00
Zdenek Kabelac
68955a8102 coverity: ensure non-null pointers are used
Here is too complex for Coverity to guess
those pointers cannot be NULL, but it's
very easy to add little checks here.
2016-02-23 21:40:16 +01:00
Zdenek Kabelac
dbc71dc05e gcc: cleanup some sign warnings
When comparing unsigned with int, the comparision is made
as 'unsigned' type, so make it rather explicit which type
is being compared.
2016-02-23 12:25:25 +01:00
Zdenek Kabelac
293aabe4cd cache: enforce header check
Currently it's been checked for 'zero' header for thin-pool,
but lets use it always for cache as well - since it's relatively 'cheap'
detection of read 'error' problems as thin/cache tools
currently do not work fast enough in this case.
2016-02-23 12:25:25 +01:00
Zdenek Kabelac
f501f083bf thin: fix read size compare
Fix the compare with 'unsigned' sizeof() and error read -1 result.
So the read error is correctly recognized.
2016-02-23 12:22:18 +01:00
Zdenek Kabelac
f31d596c0d thin: report needs_check and fail state
Fix reporting of Fail thin-pool target status
as attr[8] letter 'F'.

Report  'needs_check' status from thin-pool target via
attr field [4] (letter 'c'/'C'), and also via CheckNeeded field.

TODO: think about better name here?
TODO: lots of prop_not_implemented_set
2016-02-18 16:49:34 +01:00
Zdenek Kabelac
fcbef05aae doc: change fsf address
Hmm rpmlint suggest fsf is using a different address these days,
so lets keep it up-to-date
2016-01-21 12:11:37 +01:00
Zdenek Kabelac
8b16efd17c debug: correct stack tracing
Here the 'goto' is correct path, as  !device_is_usable
is traceable with <backtrace>.

Keep the 'stack' for unusable device.
2015-12-04 22:10:30 +01:00
Zdenek Kabelac
86e7894ecc cleanup: use dm_get_status_mirror
Use libdm function to parse mirror status report.
2015-12-01 13:03:16 +01:00
Zdenek Kabelac
6336ef98d4 lib: pass mem pool to check_transient_status
check_transient_status() may need to allocate some memory,
so pass in already existing mem pool.
2015-12-01 13:01:28 +01:00
Zdenek Kabelac
922fccc656 cleanup: using display_lvname
Use for showing vgname/lvname in messages.
No functional change.
2015-11-26 09:27:37 +01:00
Zdenek Kabelac
b7b59ad932 cleanup: remove unused code
Remove long outstand unused code lines, which were already
been obsoleted by other code.

Statuses and snapshot tree creation is already handled differently.

Also drop some 'extra' log_error() and use only stack;
since error has already been reported.
2015-11-26 09:27:37 +01:00
Zdenek Kabelac
528695ec20 cleanup: avoid allocation for vg_name
Since we do not use dev_manager in a way we would have destroyed VG
content while  in-use - we could safely keep just pointer.
So dropping strdup.

Also it seems we actually no longer use vg_name for anything
so it may possibly go away completely unless it would be useful
for debugging...
2015-11-26 09:27:37 +01:00
Zdenek Kabelac
0285066e10 thin: fix previous update of partial tree building
We do want to preserve 'active' thin-pool,
so add this 'fake' layer only when activating.

TODO:  think how to use thin-pool without fake LV layer.
2015-11-24 23:24:11 +01:00
Zdenek Kabelac
94c9453659 thin: work with active thin-pool
When 'lvextend -L+XX vg/thinpool'  do not leave inactive table
loaded for 'wrapping' LV on top of resized thin-pool
(ATM we use linear  LV for this with same size as thin-pool).
2015-11-23 23:41:36 +01:00
Zdenek Kabelac
a45cc0fe14 raid: fix the string compare
Coverity noticed this condition is always false and the error
path could never be visited.

So check for all mismatches of supported messages
and actually mark log_error as internal error.
2015-11-10 21:40:28 +01:00
Zdenek Kabelac
164d7e72bf devmanager: validate target params
Coverity: ensure we do not read through NULL pointers for
target_type and params.
2015-11-09 10:19:20 +01:00
Zdenek Kabelac
80c3fb786c thin: fix error path mem leak
Coverity: when parsing of thin-pool status would have failed,
it could have leaked memory pool and dmt struct.
2015-11-09 10:19:19 +01:00
Zdenek Kabelac
ba41ee1dc9 thin: limit no-flush using only for thin-pool
For this release keep usage of 'noflush' only for thin-volume/pool.

For rest of keep - keep usage of 'noflush' flag purely for
non-resized mirrors.
2015-10-26 23:57:31 +01:00
Zdenek Kabelac
f898cf7539 dev_manager: no flush for extension
Recognize the target only 'extends' and do not enforce
'flush' in this case.  Only the size reduction
still requires flush (so disables usage of no_flush flag).

If some other targets do require flush before suspend,
they have to explicitly ask for it.
2015-10-25 21:09:31 +01:00
Zdenek Kabelac
844b009584 dev_manager: enabled no_flush for suspend
While the activation code tries to evaluate which target
really needs flush with suspend and which may go without flush,
it has stayed effectively disabled by original commit:
33f732c5e9 since here
it only allows to pass non-pvmoving  'mirrors'.

So remove check for mirror LV type and only disable
no_flush for 'pvmove'..

TODO: Looking into history - it also seemed like raid target
would have always required flushing but it's been later
removed without clean explanation.

If some more targets really do need 'no_flush' it should
been handle at their 'level' - since we now stack multiple
targets over itself.
2015-10-25 21:07:37 +01:00
Alasdair G Kergon
39a97d86f0 segtypes: Add and use new segtype macros.
Includes fixing an inverted raid10 segtype check in _raid_add_target_line.
2015-09-24 14:59:07 +01:00
Alasdair G Kergon
214e2cddf6 segtypes: Use SEG_TYPE_NAME_ string constants. 2015-09-22 19:04:12 +01:00