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2048 Commits

Author SHA1 Message Date
Dave Wysochanski
cc171eb8ee Add implmentation for simple numeric 'get' property functions.
Add 'get' functions based on the simple macro function definition for a
numeric property.

Add 'get' functions for the following: _vg_extent_count_get,
_vg_free_count_get, _max_lv_get, _max_pv_get, _pv_count_get,
_lv_count_get, _snap_count_get, _vg_seqno_get, _vg_size_get,
_vg_free_get, vg_mda_*.

For size functions, multiply by SECTOR_SIZE to return the value in bytes.
2010-08-20 12:45:09 +00:00
Dave Wysochanski
1af822bff0 Define GET_NUM_PROPERTY_FN macro to simplify numeric property 'get' functions. 2010-08-20 12:44:58 +00:00
Dave Wysochanski
fc65b9038e Add properties.[ch] to lib/report, defined based on columns.h.
Extend the existing reporting infrastructure definitions and structures
to include a 'get' and 'set' function for each field.  We will provide
a 'get' and 'set' function for each of these fields, which will be utilized
by exported lvm2app functions.

Define a default _not_implemented 'get' and 'set' function that just sets
an errno and returns 0.  Future patches will actually implement the
specific 'get' and 'set' functions for each property.  For read-only
properties, only the 'get' function will be implemented.

Define vg_get_property() function to query a property.  We will call
this from a lvm2app function.
2010-08-20 12:44:47 +00:00
Dave Wysochanski
7bdc15c8bb Remove explicit double quotes from columns.h 'id' entries.
The 'id' entries in columns.h are the report field names.  Since these are
unique, we'd like to use them in generation of 'get' / 'set' functions.
As a step towards using them for this purpose, remove the explicit double
quotes and use the macro '#' character to add the double quotes back when
placing them into the '_fields' array 'id' member.
2010-08-20 12:44:17 +00:00
Dave Wysochanski
d5722ebb21 Add 'flags' field to columns.h and define FIELD_MODIFIABLE.
Add a 'flags' field to columns.h, and set it to 0 by default.
Define FIELD_MODIFIABLE flag to indicate whether a 'set' function exists
to change the field's value.
2010-08-20 12:44:03 +00:00
Dave Wysochanski
69d67dc2ca Add vg_mda_size and vg_mda_free functions.
Add supporting functions to get vg_mda_size and vg_mda_free fields.
Should be no functional change.
2010-08-20 12:43:49 +00:00
Milan Broz
586b56b18c Fix wrong use of LCK_WRITE
In all top vg read functions only LCK_VG_READ/WRITE can be used.
All other vg lock definitions are low-level backend machinery.

Moreover, LCK_WRITE cannot be tested through bitmask.
This patch fixes these mistakes.

For _recover_vg() we do not need lock_flags, it can be only
two of above and we always upgrading to LCK_VG_WRITE lock there.
(N.B. that code is racy)

There is no functional change in code (despite wrong masking
it produces correct bits:-)
2010-08-19 23:26:31 +00:00
Milan Broz
727f7bfa49 Detect LUKS signature in pvcreate
One shiny day we should use libblkid here. But now using LUKS is
very common together with LVM and pvcreate destroys LUKS completely.

So for user's convenience, try to detect LUKS signature and allow abort.
2010-08-19 23:08:18 +00:00
Milan Broz
c37a14506a Fix file descriptor leak in swap signature detection 2010-08-19 23:05:45 +00:00
Milan Broz
2d5e2b52ca Change the pvcreate swap/md logic
pvcreate detects MD and swap signature.

The logic hidden there is not only documented but it is also
user unfriendly. Who invented this logic should run pvcreate
on its own critical MD device to see why;-)

This patch
 - creates one function instead of duplication code
 - asks if user want to overwrite signature
 - allows aborting (!)
 (Please note that writing LVM signatute without wiping old
 is wrong, it confuses blkid, MD will not work anyway and
 swap and LUKS is broken too.)
2010-08-19 23:03:34 +00:00
Alasdair Kergon
22149572e8 Use 'SINGLENODE' instead of 'dead' in clvmd singlenode messages.
Ignore snapshots when performing mirror recovery beneath an origin.
Pass LCK_ORIGIN_ONLY flag around cluster.
Add suspend_lv_origin and resume_lv_origin using LCK_ORIGIN_ONLY.
2010-08-17 19:25:05 +00:00
Alasdair Kergon
2d6fcbf67d Allow internal suspend and resume of origin without its snapshots. 2010-08-17 16:25:32 +00:00
Alasdair Kergon
85ed403002 Fix dev_manager_transient to access -real device not snapshot-origin. (brassow)
Another reminder why cloning functions impedes maintenance.
2010-08-17 01:51:12 +00:00
Alasdair Kergon
f92b4f9482 Monitor origin -real device below snapshot instead of overlay device. (brassow) 2010-08-17 01:16:41 +00:00
Alasdair Kergon
85a80e0505 Don't really change monitoring status when in test mode. 2010-08-16 23:29:09 +00:00
Alasdair Kergon
d1e8046f56 Various small cleanups and fixes related to monitoring. 2010-08-16 22:54:35 +00:00
Jonathan Earl Brassow
d0191bf9f4 Fix for bug 612291: dm devices of split off mirror images are not removed
DM devices were not handled properly on nodes in a cluster that were not
where the splitmirrors command was issued.  This was happening because
suspend_lv/resume_lv were being used in a place where activate_lv should
have been used.

When the suspend/resume are issued on (effectively) new LVs, their
'resource' (UUID) is not located in the lv_hash.  Thus, both operations
turn into no-ops.  You can see this from the output of clvmd from one
of the remote nodes:
<snip>
do_suspend_lv, lock not already held
<snip>
do_resume_lv, lock not already held

'activate_lv' enjoins the other nodes in the cluster to process the lock
and activate the new LV.  clvmd output from remote node as follows:
do_lock_lv: resource 'zMseY7CBuO3Ty09vXlplPAHzD0Y0CovjrTdv0R1VcwggMwPdYhutHErRcwm5Nd2S', cmd = 0x19 LCK_LV_ACTIVATE (READ|LV|NONBLOCK), flags = 0x84 (DMEVENTD_MONITOR ), memlock = 1
sync_lock: 'zMseY7CBuO3Ty09vXlplPAHzD0Y0CovjrTdv0R1VcwggMwPdYhutHErRcwm5Nd2S' mode:1 flags=1
sync_lock: returning lkid 27b0001

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Reviewed-by: Petr Rockai <prockai@redhat.com>
2010-08-16 18:02:14 +00:00
Mike Snitzer
b123a82d73 Change default alignment of pe_start to 1MB.
The new standard in the storage industry is to default alignment of data
areas to 1MB.  fdisk, parted, and mdadm have all been updated to this
default.

Update LVM to align the PV's data area start (pe_start) to 1MB.  This
provides a more useful default than the previous default of 64K (which
generally ended up being a 192K pe_start once the first metadata area
was created).

Before this patch:
# pvs -o name,vg_mda_size,pe_start
  PV         VMdaSize  1st PE
  /dev/sdd     188.00k 192.00k

After this patch:
# pvs -o name,vg_mda_size,pe_start
  PV         VMdaSize  1st PE
  /dev/sdd    1020.00k   1.00m

The heuristic for setting the default alignment for LVM data areas is:
- If the default value (1MB) is a multiple of the detected alignment
  then just use the default.
- Otherwise, use the detected value.

In practice this means we'll almost always use 1MB -- that is unless:
- the alignment was explicitly specified with --dataalignment
- or MD's full stripe width, or the {minimum,optimal}_io_size exceeds
  1MB
- or the specified/detected value is not a power-of-2
2010-08-12 04:11:48 +00:00
Mike Snitzer
dff224669d Require --restorefile when using pvcreate --uuid.
Introduce --norestorefile to allow user to override the new requirement.

This can also be overridden with "devices/require_restorefile_with_uuid"
in lvm.conf -- however the default is 1.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2010-08-12 04:08:59 +00:00
Peter Rajnoha
626242c1bd Recognise and give preference to md device partitions (blkext major).
We can already detect MD devices internally. But when using MD partitions,
these have "block extended major" (blkext) assigned (259). Blkext major
is also used in general, so we need to check whether the original device
is an MD device actually.
2010-08-11 12:14:23 +00:00
Petr Rockai
f3ad0dcfde Never scan internal LVM devices. 2010-08-09 14:05:16 +00:00
Jonathan Earl Brassow
8d2d4f1fa0 Fix for bug 619221 - log device splitting regression
An incorrect fix on July 13, 2010 for an annoyance has caused a regression.
The offending check-in was part of the 2.02.71 release of LVM.  That
check-in caused any PVs specified on the command line to be ignored when
performing a mirror split.

This patch reverses the aforementioned check-in (solving the regressions)
and posits a new solution to the list reversal problem.  The original
problem was that we would always take the lowest mimage LVs from a mirror
when performing a split, but what we really want is to take the highest
mimage LVs.  This patch accomplishes that by working through the list in
reverse order - choosing the higher numbered mimages first.  (This also
reduces the amount of processing necessary.)

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Reviewed-by: Takahiro Yasui <takahiro.yasui@hds.com>
2010-08-06 15:38:32 +00:00
Petr Rockai
851aaf4ecc Reduce severity of the "mirror transient status" log message (this was never
intended to be a log_error).
2010-08-04 15:55:03 +00:00
Mike Snitzer
14a9722185 Avoid changing aligned pe_start as a side-effect of very verbose logging. 2010-08-03 18:19:42 +00:00
Peter Rajnoha
97df4e4675 Use built-in rules for device aliases: block/ < dm- < disk/ < mapper/ < other. 2010-08-03 13:39:27 +00:00
Zdenek Kabelac
3eadbbeb12 Fix const warning in dev_manager_info() and _dev_manager_lv_rmnodes(). 2010-08-03 13:13:01 +00:00
Zdenek Kabelac
c10f7fd039 Fix constness warning in archive_file structure from archive.c. 2010-08-03 13:09:21 +00:00
Zdenek Kabelac
9f926fd060 Use void parameter for function definition. 2010-08-03 13:06:35 +00:00
Jonathan Earl Brassow
cbd41292a4 Taka's fix for handling failure of all mirrored log devices and
all but one mirror leg.

<patch header>
To handle a double failure of a mirrored log, Jon's two patches are
commited, however, lvconvert command can't still handle an error
when mirror leg and mirrored log got failure at the same time.

  [Patch]: Handle both devices of a mirrored log failing (bug 607347)
  posted: https://www.redhat.com/archives/lvm-devel/2010-July/msg00009.html
  commit: https://www.redhat.com/archives/lvm-devel/2010-July/msg00027.html

  [Patch]: Handle both devices of a mirrored log failing (bug 607347) -
           additional fix
  posted: https://www.redhat.com/archives/lvm-devel/2010-July/msg00093.html
  commit: https://www.redhat.com/archives/lvm-devel/2010-July/msg00101.html

In the second patch, the target type of mirrored log is replaced with
error target when remove_log is set to 1, but this procedure should be
also used in other cases such as the number of mirror leg is 1. This
patch relocates the procedure to the main path.

In addition, I added following three changes.

- Removed tmp_orphan_lvs handling procedure
  It seems that _delete_lv() can handle detached_log_lv properly
  without adding mirror legs in mirrored log to tmp_orphan_lvs.
  Therefore, I removed the procedure.

- Removed vg_write()/vg_commit()
  Metadata is saved by vg_write()/vg_commit() just after detached_log_lv
  is handled. Therefore, I removed vg_write()/vg_commit().

- With Jon's second patch, we think that we don't have to call
  remove_mirror_log() in _lv_update_mirrored_log() because will be
  handled remove_mirror_images() in _lvconvert_mirrors_repaire().
</patch header>

Signed-off-by: Takahiro Yasui <takahiro.yasui@hds.com>
Reviewed-by: Petr Rockai <prockai@redhat.com>
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
2010-08-02 21:07:40 +00:00
Jonathan Earl Brassow
efaaf3146d Disallow mirrored logs in cluster mirrors.
The cluster log daemon (cmirrord) is not multi-threaded and
can handle only one request at a time.  When a log is stacked
on top of a mirror (which itself contains a 'core' log), it
creates a situation that cannot be solved without threading.

When the top level mirror issues a "resume", the log daemon
attempts to read from the log device to retrieve the log
state.  However, the log is a mirror which, before issuing
the read, attempts to determine the 'sync' status of the
region of the mirror which is to be read.  This sync status
request cannot be completed by the daemon because it is
blocked on a read I/O to the very mirror requesting the
sync status.
2010-08-02 19:03:45 +00:00
Dave Wysochanski
936541ec56 Remove irrelevant comments relating to vg_mda_copies. 2010-07-30 16:47:27 +00:00
Alasdair Kergon
8bae0a1ecf Change clvmd to communicate with lvm via a socket in /var/run/lvm. (mbroz)
https://bugzilla.redhat.com/show_bug.cgi?id=614248 [CVE-2010-2526]
2010-07-28 13:55:42 +00:00
Dave Wysochanski
81bf06ea38 Clarify help text for vg_mda_count. 2010-07-21 19:44:25 +00:00
Jonathan Earl Brassow
9baacefc77 Building without the '--enable-cmirrord' option means that
CMIRRORD_PIDFILE is not defined.  This makes the build fail.
Therefore, we need to conditionalize the check for cmirrord
based on if CMIRRORD_PIDFILE is defined.
2010-07-21 15:21:24 +00:00
Jonathan Earl Brassow
405c4a45d8 It's not enough to check for the kernel module in the case of cluster
mirrors, we must also check that the log daemon (cmirrord) is running.
The log module can be auto-loaded, but the daemon cannot be
"auto-started".  Failing to check for the daemon produces cryptic
messages that customers have a hard time deciphering.  (The system
messages do report that the log daemon is not running, but people
don't seem to find this message easily.)

Here are examples of what is printed when the module is available,
but the log daemon has not been started.

[root@bp-01 LVM2]# lvcreate -m1 -l1 -n lv vg
  Shared cluster mirrors are not available.

[root@bp-01 LVM2]# lvcreate -m1 -l1 -n lv vg -v
    Setting logging type to disk
    Finding volume group "vg"
    Archiving volume group "vg" metadata (seqno 3).
    Creating logical volume lv
    Executing: /sbin/modprobe dm-log-userspace
    Cluster mirror log daemon is not running
  Shared cluster mirrors are not available.
    Creating volume group backup "/etc/lvm/backup/vg" (seqno 4).
2010-07-21 13:40:21 +00:00
Jonathan Earl Brassow
60f425d1b3 Fix for bug 614164: No check for existing name when splitting mirror
The user could use the same name as an existing LV when specifying a
name for an LV split off from a mirror.  This causes all sorts of
issues.
2010-07-13 22:24:39 +00:00
Jonathan Earl Brassow
c42b084793 Fix for bugs: 612248 & 612291 Split mirror issues
The main problem with these bugs was that the newly split
off LV was not being suspended properly.  This meant that
the memlock count was not being balanced, the DM devices
were not being renamed, and some DM devices which should
have been removed were not.

I've also renamed some of the variables and added comments
to make things clearer as to what is going on.  (I can break
this patch in two if it means easier review.)
2010-07-13 21:48:16 +00:00
Fabio M. Di Nitto
8c4e8a185a Add dm_create_lockfile to libdm to handle pidfiles for all daemons.
Switch dmeventd to use dm_create_lockfile and drop duplicate code.
Allow clvmd pidfile to be configurable.
Switch cmirrord and clvmd to use dm_create_lockfile.
2010-07-13 13:51:01 +00:00
Peter Rajnoha
3122f963b0 Addendum for previous patch - show VG/LV name everywhere so the messages
are consistent.
2010-07-12 12:38:35 +00:00
Peter Rajnoha
fefa43235f Add more verbose messages while checking volume_list and hosttags settings.
This should bring less confusion when there are some settings left and
people just forgot about it and then they run into problems. These messages
should give them a hint of what's really going on.
2010-07-12 11:37:49 +00:00
Jonathan Earl Brassow
a93fb6299f Failed to test for the case where a log was requested to be removed
even though there was no log.  A simple run through the in-tree test
suite would have caught this.  :(

-               if (lv_is_mirrored(detached_log_lv) &&
+               if (detached_log_lv && lv_is_mirrored(detached_log_lv) &&

Also, made some cosmetic changes suggested by kabi after my last check-in
(e.g. s/return 0/return_0/ and adding an error message).
2010-07-09 17:57:51 +00:00
Dave Wysochanski
f77fb62b2a Add log_error when strdup fails in {vg|lv}_change_tag().
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-07-09 16:57:44 +00:00
Alasdair Kergon
08f1ddea6c Use __attribute__ consistently throughout. 2010-07-09 15:34:40 +00:00
Alasdair Kergon
80e569104b Remove superfluous fn prototypes. 2010-07-09 15:21:10 +00:00
Jonathan Earl Brassow
aa5734f2a3 Finish fix for bug 607347: failing both redundant mirror log legs...
A previous check-in added logic to handle the case where both images
of a mirrored log failed.  It solved the problem by simply removing
the log entirely - leaving the parent mirror with a 'core' log.  This
worked for most cases.  However, if there was a small delay between
the failures of the two mirrored log devices, the mirror would hang,
LVM would hang, and no additional LVM commands could be issued.

When the first leg of the log fails, it signals the need for repair.
Before 'lvconvert --repair' is run by dmeventd, the second leg fails.
'lvconvert' would see both devices as failed and try to remove the
log entirely.  When it came time to suspend the parent mirror to
update the configuration, the suspend would hang because it couldn't
get any I/O through the mirrored log, which was plugged waiting for
corrective action.  The solution is to replace the log with an error
target to clear any pending writes before removing it.  This allows
the parent mirror to suspend and make the proper changes.
2010-07-09 15:08:12 +00:00
Dave Wysochanski
a5fb2bbff3 Pass metadataignore to pv_create, pv_setup, _mda_setup, and add_mda.
Pass metadataignore through PV creation / setup paths.
As a result of this cleanup, we can remove the unnecessary setting
of mda_ignore bits inside pvcreate_single(), after call to pv_create.
For now, just set metadataignore to '0' in some places.  This is
equivalent to the prior functionality, although the 0 is given
by the caller not hardcoded in _mda_setup() call.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-07-08 18:24:29 +00:00
Dave Wysochanski
dce204cec5 Init mda->list in mda_copy.
This patch should be no functional change as all callers initialize
mda->list.
2010-07-08 17:41:46 +00:00
Zdenek Kabelac
764eb41086 Fix format string from patch apply mistake 2010-07-08 14:47:46 +00:00
Zdenek Kabelac
37036b0215 Small update of memlock debug messages.
Gives slightly better alligned lines for reading.
2010-07-08 13:05:27 +00:00
Zdenek Kabelac
4ec2ae8632 Do not log backtrace in valid _lv_resume() code path 2010-07-08 12:24:04 +00:00