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Commit Graph

226 Commits

Author SHA1 Message Date
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
Petr Rockai
58ea7af08c Fix a bug in dmeventd snapshot monitoring code where the monitoring threshold
would grow with subsequent snapshot extensions (RHBZ 754198).
2011-11-21 12:31:18 +00:00
Alasdair Kergon
bf09a32006 Make dmsetup.static and lvm.static build when dmeventd is disabled.
udev may also need to be disabled if you didn't build it statically too.

dmeventd.static could be fixed with some more work but I don't really see the
point: without dlopen() it's useless, and if you have dlopen(), why not support
normal shared libraries too?
2011-11-14 21:30:35 +00:00
Petr Rockai
6825ae1e28 Remove a redundant (and in some cases, misleading) message about snapshot
extension, in the snapshot dmeventd plugin. The reporting is done as needed by
the LVM command nowadays.
2011-10-19 14:31:49 +00:00
Petr Rockai
61cf772e70 Keep the LVM-based dmeventd plugins from trying to manipulate the dmeventd
monitoring state of the logical volumes they are currently acting on.

Until now, every time a logical volume has been changed by a dmeventd plugin,
this plugin would have called back to dmeventd through the external FIFO
mechanism. I am fairly sure this was superfluous, inefficient and possibly even
dangerous.
2011-10-19 08:46:26 +00:00
Zdenek Kabelac
9e5486bb65 Drop cleanup of .exported_symbols_generated in DISTCLEAN_TARGETS
Makefile cosmetics - since .exported_symbols_generated in cleardir:
target via make.tmpl, there is no need to set them in DISTCLEAN_TARGETS.
2011-09-24 21:00:52 +00:00
Zdenek Kabelac
37341289e6 Keep the old-style function definition 2011-09-14 09:53:32 +00:00
Zdenek Kabelac
316d14d45f Fix resource leak when strdup fails
Static analyzer noticed, strdup failing path leaks dmt structure.
2011-08-31 08:23:05 +00:00
Alasdair Kergon
40dbaac892 pre-release fixes incl make distclean and configure --with-raid=none/shared 2011-08-11 19:18:17 +00:00
Jonathan Earl Brassow
3041b72f06 Add dmeventd monitoring for RAID devices. 2011-08-11 05:00:20 +00:00
Peter Rajnoha
3c614ef1c1 Add support for systemd file descriptor handover in dmeventd.
Systemd preloads file descriptors for us and passes them in for
newly spawned daemon when using on-demand fifo (or socket)
based activation.

This patch adds checks for file descriptors preloaded by
systemd and uses them instead of opening the FIFOs again
to properly support on-demand FIFO-based activation.

(We'll change FIFOs to sockets soon - but still this
part of the code will stay almost the same.)
2011-07-28 13:06:50 +00:00
Peter Rajnoha
7d47d109b9 Add support for new oom killer adjustment interface (oom_score_adj).
The filename to adjust the oom score was changed in 2.6.36.
We should use oom_score_adj instead of oom_adj (which is still
there under /proc, but it's scheduled for removal in August 2012).

New oom_score_adj uses a range from -1000 (OOM_SCORE_ADJ_MIN,
disable oom killing) to 1000 (OOM_SCORE_ADJ_MAX).
2011-07-28 13:03:37 +00:00
Alasdair Kergon
c837830f6a report which dev was not found 2011-07-08 12:35:48 +00:00
Zdenek Kabelac
6b7fe2852a Use dm_snprintf
and fix differently signed comparation.
2011-04-08 14:18:40 +00:00
Petr Rockai
968cdc0066 Add rudimentary versioning to the dmevend protocol, allowing us to detect the
(protocol) version of the running dmeventd on the client side.

Right now this is only used in dmeventd -R.
2011-04-04 16:11:09 +00:00
Zdenek Kabelac
6460d5a405 Add attribute printf
gcc suggested to add these attributes to instrumentat
printf arguments. Adding it for internal functions as well.
2011-03-29 21:53:46 +00:00
Zdenek Kabelac
aaf92617b0 Fix -Wold-style-definition gcc warnings 2011-03-29 20:30:05 +00:00
Petr Rockai
0263cd7bbc Do not run past the end of an array in dmeventd's _handle_request when faced
with an unknown command ID.
2011-03-02 14:20:48 +00:00
Petr Rockai
61394ca4aa As requested in BZ 454618:
- dmeventd -R will continue to start up even if no dmeventd is currently
  running + a test for this behaviour
- add -R to dmeventd manpage
2011-03-02 12:49:13 +00:00
Milan Broz
cbedb99e4c Fix some compile warnings on RHEL5
- returned char not needed to be explicitly const
- warn if pipe() fails in clvmd (more fixes here needed for error paths...)
- assign (and ignore) read() output in drain buffer
2011-03-01 20:17:56 +00:00
Zdenek Kabelac
eba7348340 Test result of dm_task_set_uuid 2011-02-28 19:47:22 +00:00
Petr Rockai
228fbb6f84 Avoid flooding syslog with redundant messages when a snapshot is invalidated
(reported by Corey).
2011-02-14 14:26:36 +00:00
Milan Broz
4c29343443 Remove DEBUGLOG from dmeventd. 2011-01-17 23:14:05 +00:00
Alasdair Kergon
4299c31d26 remove unused definitions 2011-01-17 19:02:44 +00:00
Zdenek Kabelac
0a9b444a60 Remove dead assignment of 'ret' value
Variable 'ret' assigned from _do_event() was actually not used and replaced with next
assignment without any read of the returned value.

Code is reformated - so the error path is put in the if() branch and normal
code is put after the 'if' together with FIXME comment.


FIXME lowprio: logging needs to be fixed in this code,
 - multiple log_errors are printed, stacks are missing...
2011-01-06 10:45:41 +00:00
Zdenek Kabelac
4b1232984b Remove unneeded stack prints after log_error 2011-01-06 09:45:05 +00:00
Zdenek Kabelac
4388a09b0f Detect errors from dm_task_set calls
Check for errors in dm_task_set calls.
Use  goto_bad macro with stack trace.
Replace  label  failed: with bad:.
2010-12-22 15:28:44 +00:00
Zdenek Kabelac
6bc840fd2a Add check for unlink errors 2010-12-20 14:08:46 +00:00
Peter Rajnoha
7dfce0e467 Add new dm_prepare_selinux_context fn to libdevmapper and use it throughout.
Detect existence of new SELinux selabel interface during configure.
Use new dm_prepare_selinux_context instead of dm_set_selinux_context.

We should set the SELinux context before the actual file system object creation.
The new dm_prepare_selinux_context function sets this using the selabel_lookup
fn in conjuction with the setfscreatecon fn. If selinux/label.h interface
(that should be a part of the selinux library) is not found during configure,
we fallback to the original matchpathcon function instead.
2010-12-13 10:43:56 +00:00
Zdenek Kabelac
693ec4b404 Use one fprintf call for usage print
Replace multiple fprintf calls with multiline one.
2010-11-29 12:15:41 +00:00
Zdenek Kabelac
2e8d681cf2 Remove dead assignment in 'main'
'ret' is never read anywhere - remove it.
2010-11-29 11:23:14 +00:00
Zdenek Kabelac
2044eacc7e Add missing fclose
Fixing resource leak in _umount().

CHECKME: mountpoints with spaces need to be checked
2010-11-23 21:19:45 +00:00
Petr Rockai
fe9ac4d3f4 Add code to the dmeventd snapshot plugin to automatically unmount snapshots
that have been invalidated.
2010-10-29 16:43:51 +00:00
Zdenek Kabelac
3a32d104bd Update C declaration () -> (void) 2010-10-26 08:54:37 +00:00
Zdenek Kabelac
d80f8cf41b Fix clang warning for ntohl(*((uint32_t *)buf))
We cast (char*) to (uint32_t*) that changes alignment requierements.
For our case the code has been correct as alloca() returns properly
aligned buffer, however this patch make it cleaner and more readable
and avoids warning generation.
2010-10-25 11:57:06 +00:00
Petr Rockai
d95a85ca36 Implement dmeventd -R, allowing dmeventd to be restarted without losing
monitoring state.
2010-10-20 15:12:12 +00:00
Petr Rockai
a341cab721 Implement automatic snapshot extension with dmeventd, and add two new options
to lvm.conf in the activation section: 'snapshot_autoextend_threshold' and
'snapshot_autoextend_percent', that define how to handle automatic snapshot
extension. The former defines when the snapshot should be extended: when its
space usage exceeds this many percent. The latter defines how much extra space
should be allocated for the snapshot, in percent of its current size.
2010-10-15 16:28:14 +00:00
Alasdair Kergon
ac0252ca07 Add dm_zalloc and use it and dm_pool_zalloc throughout. 2010-09-30 21:06:50 +00:00
Zdenek Kabelac
1ebbfd9958 Fix leaked pool report
Swap pool destruction order in dmeventd_lvm2_exit() to fix leak report.
2010-09-30 11:40:14 +00:00
Zdenek Kabelac
c7df0240f9 Add missing cleanup rule for generated .exported_symbols_generated 2010-09-30 10:08:58 +00:00
Alasdair Kergon
d1e8046f56 Various small cleanups and fixes related to monitoring. 2010-08-16 22:54:35 +00:00
Alasdair Kergon
470c18847d Remove superfluous NULL pointer tests before dm_free from dmeventd. 2010-08-16 18:19:46 +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
Alasdair Kergon
08f1ddea6c Use __attribute__ consistently throughout. 2010-07-09 15:34:40 +00:00
Alasdair Kergon
bdadde2f7a Use -d to control level of messages sent to syslog by dmeventd.
Change -d to -f to run dmeventd in foreground.
(mornfall)
2010-05-14 14:56:39 +00:00
Alasdair Kergon
e2d136477b Fix static build. 2010-05-14 13:36:56 +00:00
Zdenek Kabelac
fff111fe22 Add pkgconfigdir for placement of .pc files
Use easily overideable make install pkgconfigdir variable.
2010-05-11 08:57:02 +00:00
Zdenek Kabelac
e73debb2db Use Require.private: field for devmapper-event.pc
Move devmapper to Require.private: field and remove unneeded libs
from Libs.private: as they are dependencies of devmapper library.
2010-05-11 08:47:02 +00:00
Zdenek Kabelac
75b55f1136 Plugins do not use pthread or lvm2cmd directly.
Plugins are using pthread and lvm2cmd libraries indirectly
through devmapper-event-lvm2, so link only with libraries used by them.
2010-05-11 08:41:58 +00:00
Zdenek Kabelac
1e9ed439d4 Link libdevmapper-event.so with libdevmapper.so.
For now using $(LIBS) for a list of linked libraries to $(LIB_SHARED) library.
2010-05-11 08:38:10 +00:00