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Commit Graph

30 Commits

Author SHA1 Message Date
Samanta Navarro
01d5e4d1ca all: fix typos 2021-03-30 13:08:14 +02:00
Heinz Mauelshagen
6f355c6736 dmeventd: avoid bail out preventing repair in raid plugin but keep message
Followup patch mentioned in previous commit fe577f84cbf6bd7be76b457c9d54d0e54e57f93d.

Problem:
  even though dead raid component devices are detected, the
  raid plugin is bailing out thus preventing a repair attempt.

Rational:
  in case of component device errors, the MD resynchronization
  thread runs in parallel with the thrown event being processed
  by the raid plugin.  The plugin retrieves the raid device status
  but that still reflects insync regions as 0 (when it should
  already be total regions) because the MD thread didn't update it yet.

Solution:
  Remove the insync regions check but keep the informal message
  "waiting for resynchronization"  and let lvconvert carry out its
  pre-repair checks and optionally carry out a repair attempt.

Related: https://bugzilla.redhat.com/show_bug.cgi?id=1751887
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1560739
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1468590
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1654860
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1729303
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1741016
2019-09-20 17:53:20 +02:00
Heinz Mauelshagen
6fc46af8ec Revert "dmeventd: avoid bail out preventing repair in raid plugin"
This reverts commit ad560a286a.

The reverted patch also removed the warning which we realized we need
to keep as valuable process information (see related bugzilla below).

In a followup patch, we'll keep the message and avoid bailing out thus
always allowing lvconvert to try repairing if 'allocate' fault policy set.

Related: https://bugzilla.redhat.com/show_bug.cgi?id=1751887
2019-09-20 17:52:37 +02:00
Heinz Mauelshagen
ad560a286a dmeventd: avoid bail out preventing repair in raid plugin
Problem:
even though dead raid component devices are detected, the
raid plugin is bailing out thus preventing a repair attempt.

Rational:
in case of component device errors, the MD resynchronization
thread runs in parallel with the thrown event being processed
by the raid plugin.  The plugin retrieves the raid device status
but that still reflects insync regions as 0 (when it should
already be total regions) because the MD thread didn't update it yet.

Solution:
Remove the insync regions check and let lvconvert carry out its
pre-repair checks and optionally carry out a repair attempt.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1560739
Related:  https://bugzilla.redhat.com/show_bug.cgi?id=1468590
Related:  https://bugzilla.redhat.com/show_bug.cgi?id=1654860
Related:  https://bugzilla.redhat.com/show_bug.cgi?id=1729303
Related:  https://bugzilla.redhat.com/show_bug.cgi?id=1741016
2019-08-16 18:07:03 +02:00
Zdenek Kabelac
63b0f0dab8 headers: use full path header instead of -I directive
Replace Makefile -I  with full path to headers like we use now
everywhere else.
2018-12-14 15:13:38 +01:00
Joe Thornber
7f97c7ea9a build: Don't generate symlinks in include/ dir
As we start refactoring the code to break dependencies (see doc/refactoring.txt),
I want us to use full paths in the includes (eg, #include "base/data-struct/list.h").
This makes it more obvious when we're breaking abstraction boundaries, eg, including a file in
metadata/ from base/
2018-05-14 10:30:20 +01:00
Zdenek Kabelac
0016b79c8b dmeventd: improve more raid status reporting
When we want to report primary leg failure, check for intial 'a',
since otherwice 'Aa idle' is normally visible.

Also reset array of bit flags marking dead devices, once
plugin detects raid is in sync.
2017-06-24 00:06:12 +02:00
Zdenek Kabelac
653bdedb83 raid: plugin does not to use --config
Functionality of ignore suspend devices is already granted by:

lvm2_disable_dmeventd_monitoring() -> init_run_by_dmeventd() ->
init_ignore_suspended_devices().

In fact plugins should never use --config because it has
some unpleasant technical issues.
2017-06-23 23:32:40 +02:00
Jonathan Brassow
4c0e908b0a RAID (lvconvert/dmeventd): Cleanly handle primary failure during 'recover' op
Add the checks necessary to distiguish the state of a RAID when the primary
source for syncing fails during the "recover" process.

It has been possible to hit this condition before (like when converting from
2-way RAID1 to 3-way and having the first two devices die during the "recover"
process).  However, this condition is now more likely since we treat linear ->
RAID1 conversions as "recover" now - so it is especially important we cleanly
handle this condition.
2017-06-14 08:39:50 -05:00
Heinz Mauelshagen
a37bb7b2a5 dmeventd: adjust mirror/raid DSOs to new repair design
Previous commit 506d88a2ec introduced disabling lvmetad on repairs.

Avoid calling lvscan and use of any --config options altogether
in the mirror and raid DSOs.

Related: rhbz1380521
2017-03-16 21:05:05 +01:00
Zdenek Kabelac
05dd566a52 dmeventd: unify error handling
Always make sure the 'status' is release on 'error' path (thin pluging missed)
Make code looking same across all plugins.
2017-02-14 00:03:34 +01:00
Zdenek Kabelac
f9c6c115d3 cleanup: easier code for raid plugin
Set bits only when then were not yet assigned.
2016-12-09 15:15:02 +01:00
Zdenek Kabelac
5fd5cfe061 cleanup: use display_lvname and msg cleanup
Use display_lvname in tracing messages.
Add some missing 'dots' to messages.
2016-11-23 17:48:01 +01:00
Zdenek Kabelac
e3775173b4 cleanup: log_info to log_error
Switch to more appropriate logging level.
2016-11-03 17:49:07 +01:00
Zdenek Kabelac
ee04f1fcfd raid: dmeventd plugin use 64bit arithmetic
Coverity suggested to used 64bit unsigned ints instead of signed 32b int.
Assuming there is no user of >31legs raid array.
2016-10-03 17:44:25 +02:00
Heinz Mauelshagen
5d455b28fc lvconvert: fix (automatic) raid repair regression
The dm-raid target now rejects device rebuild requests during ongoing
resynchronization thus causing 'lvconvert --repair ...' to fail with
a kernel error message. This regresses with respect to failing automatic
repair via the dmeventd RAID plugin in case raid_fault_policy="allocate"
is configured in lvm.conf as well.

Previously allowing such repair request required cancelling the
resynchronization of any still accessible DataLVs, hence reasoning
potential data loss.

Patch allows the resynchronization of still accessible DataLVs to
finish up by rejecting any 'lvconvert --repair ...'.

It enhances the dmeventd RAID plugin to be able to automatically repair
by postponing the repair after synchronization ended.

More tests are added to lvconvert-rebuild-raid.sh to cover single
and multiple DataLV failure cases for the different RAID levels.

- resolves: rhbz1371717
2016-09-21 00:39:29 +02:00
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
1a2d0a0c72 cleanup: indents 2015-10-22 22:46:10 +02:00
Zdenek Kabelac
9c5c9e2355 dmeventd: raid plugin reporting
Fix raid logging introduced with last updating commit.
2015-10-22 22:28:37 +02:00
Zdenek Kabelac
4b586ad3c2 dmeventd: rework raid plugin
Switch to per-thread mem-pool and lock only for lvm2 calls.
Use libdm parser for raid status line.
2015-10-13 16:02:19 +02:00
Zdenek Kabelac
49e11102c7 dmeventd: add local mempool for raid and mirror
Using local mempools allows to drop locks when such memory is needed.
2015-10-13 15:56:23 +02:00
Zdenek Kabelac
0a633750f1 cleanup: avoid using private
Switch private to user.
2015-10-13 15:22:58 +02:00
Zdenek Kabelac
c90363b585 dmeventd: use log_ macros in plugins
Convert from syslog to standard log_() macros in plugins.
2015-10-13 15:09:03 +02:00
Zdenek Kabelac
915f0faac1 dmeventd: syslog -> log_xxxxx
Convert logging of dmeventd to libdm logging macros.
2015-10-13 14:43:30 +02:00
Petr Rockai
5dc6671bb5 dmeventd: Call lvscan --cache in the RAID plugin. 2014-07-22 22:48:21 +02:00
Zdenek Kabelac
6b701c3a48 cleanup: dmeventd abstract lvm2cmd interface
Keep  lvm2cmd  interface hidden inside dmeventd_lvm
and use regular 1/0 return codes, this we may
avoid using lvm2cmd.h in other lvm2 plugins.
2014-04-18 16:38:51 +02:00
Alasdair G Kergon
7c6526aae2 lvresize: separate validation from action
Start separating the validation from the action in the basic lvresize
code moved to the library.
Remove incorrect use of command line error codes from lvresize library
functions.  Move errors.h to tools directory to reinforce this,
exporting public versions of the error codes in lvm2cmd.h for dmeventd
plugins to use.
2013-07-06 03:28:21 +01:00
Zdenek Kabelac
1aae627433 Use new dmeventd_lvm2_command function in dmeventd plugins.
For snapshot, prepare whole command in front into private buffer.
Add also some missing '\n' for syslog messages.
For raid and mirror only convert creation of command line string.
This should avoid any unbound growth of mempool for dm_split_names.
2011-12-22 16:37:01 +00:00
Jonathan Earl Brassow
d098140177 Add policy based automated repair of RAID logical volumes
The RAID plug-in for dmeventd now calls 'lvconvert --repair' to address failures
of devices in a RAID logical volume.  The action taken can be either to "warn"
or "allocate" a new device from any spares that may be available in the
volume group.  The action is designated by setting 'raid_fault_policy' in
lvm.conf - the default being "warn".
2011-12-06 19:30:15 +00:00
Jonathan Earl Brassow
3041b72f06 Add dmeventd monitoring for RAID devices. 2011-08-11 05:00:20 +00:00