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Commit Graph

374 Commits

Author SHA1 Message Date
Alasdair Kergon
bc9b386f80 Rename vg_release to free_vg. 2010-12-08 20:50:48 +00:00
Alasdair Kergon
b4940ed53c Cope better with an undefined target_percent operation in _percent_run. 2010-12-08 19:26:35 +00:00
Zdenek Kabelac
a1b86401a5 Remove check for lv is NULL
'lv' is deferenced in the begining of the function so any check
later is not helpful.

Parameters for dev_manager_transien() are marked as nonnull.
2010-11-30 22:28:06 +00:00
Petr Rockai
e6ce16ae13 Refactor the percent (mirror sync, snapshot usage) handling code to use
fixed-point values instead of a combination of a float value and an enum.
2010-11-30 11:53:31 +00:00
Zdenek Kabelac
2b3e80e233 Add missing closedir() - fixes resource leak 2010-11-23 15:28:54 +00:00
Alasdair Kergon
3548ba3827 Extend cling allocation policy to recognise PV tags (cling_by_tags).
Add allocation/cling_tag_list to lvm.conf.
2010-11-09 12:34:40 +00:00
Peter Rajnoha
968c382706 Clarify error messages when activation fails due to activation filter use. 2010-11-05 18:18:11 +00:00
Zdenek Kabelac
b53badf298 Use new status code from fsadm check
Patch updates exec_cmd() and adds 3rd parameter with pointer for
status value, so caller might examine returned status code.
If the passed pointer is NULL, behavior is unmodified.

Patch allows to confinue with lvresize if the failure from fsadm check is
caused by mounted filesystem as many of filesystem resize tools do support
online filesystem resize. (originally user had to use flag '-n' to bypass
this filesystem check)
2010-11-01 14:17:35 +00:00
Alasdair Kergon
4e51f802a0 restrict last checkin to devs consisting entirely of error target 2010-10-25 10:37:34 +00:00
Mike Snitzer
e4c3b136f5 Never scan a device which is using the error target
A merged snapshot's DM device is made to use the "error" target as part
of lvm's transaction to merge a snapshot.  This snapshot merge use-case
aside, any device using the error target shouldn't be scanned.
2010-10-24 17:36:58 +00:00
Mike Snitzer
004cda1b64 Convey need for snapshot-merge target in lvconvert error message and man
page.

Add ->target_name to segtype_handler to allow a more specific target
name to be returned based on the state of the segment.

Result of trying to merge a snapshot using a kernel that doesn't have
the snapshot-merge target:

Before:
# lvconvert --merge vg/snap
  Can't expand LV lv: snapshot target support missing from kernel?
  Failed to suspend origin lv

After:
# lvconvert --merge vg/snap
  Can't process LV lv: snapshot-merge target support missing from kernel?
  Failed to suspend origin lv
  Unable to merge LV "snap" into it's origin.
2010-10-13 21:26:37 +00:00
Jonathan Earl Brassow
8fdd90eb40 This patch fixes a potential for I/O to hang and LVM commands
to block when a mirror under a snapshot suffers a failure.

The problem has to do with label scanning.  When a mirror suffers
a failure, the kernel blocks I/O to prevent corruption.  When
LVM attempts to repair the mirror, it scans the devices on the
system for LVM labels.  While mirrors are skipped during this
scanning process, snapshot-origins are not.  When the origin is
scanned, it kicks up I/O to the mirror (which is blocked)
underneath - causing the label scan (an thus the repair operation)
to hang.

This patch simply bypasses snapshot-origin devices when doing
labels scans (while ignore_suspended_devices() is set).  This
fixes the issue.
2010-08-26 14:21:50 +00:00
Alasdair Kergon
47dfe904ab 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
7f5b44b423 Allow internal suspend and resume of origin without its snapshots. 2010-08-17 16:25:32 +00:00
Alasdair Kergon
c16ca69070 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
394c628931 Monitor origin -real device below snapshot instead of overlay device. (brassow) 2010-08-17 01:16:41 +00:00
Alasdair Kergon
43695024af Don't really change monitoring status when in test mode. 2010-08-16 23:29:09 +00:00
Alasdair Kergon
063436c82b Various small cleanups and fixes related to monitoring. 2010-08-16 22:54:35 +00:00
Petr Rockai
dd5d9aa6bc Never scan internal LVM devices. 2010-08-09 14:05:16 +00:00
Zdenek Kabelac
42c4a7757d Fix const warning in dev_manager_info() and _dev_manager_lv_rmnodes(). 2010-08-03 13:13:01 +00:00
Peter Rajnoha
e9306bead5 Addendum for previous patch - show VG/LV name everywhere so the messages
are consistent.
2010-07-12 12:38:35 +00:00
Peter Rajnoha
a3bdff883b 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
Alasdair Kergon
2d3164a59f Use __attribute__ consistently throughout. 2010-07-09 15:34:40 +00:00
Zdenek Kabelac
1e699db631 Do not log backtrace in valid _lv_resume() code path 2010-07-08 12:24:04 +00:00
Petr Rockai
954df8f3d7 Account for mirror transient status when doing lvconvert --repair. 2010-05-24 15:32:20 +00:00
Zdenek Kabelac
c4655582e6 Update Copyright date for resently modifed files 2010-05-24 09:04:27 +00:00
Zdenek Kabelac
f20300cc8b Replicator: add replicator to dtree
Adding all replicator related LVs to dtree.
Start of one replicator_dev initiate start of all other related.
2010-05-24 09:01:05 +00:00
Zdenek Kabelac
c5eb266a80 Replicator: update _create_partial_dtree()
Adding function _add_partial_replicator_to_dtree() to create
partial tree for Replicator target.

Using dm_tree_node_set_presuspend_node() for Replicator.
2010-05-21 14:47:58 +00:00
Zdenek Kabelac
04f3cea84a Replicator: activate checks for missing vgs
Activation needs to have all remote VGs locked to pass for replicator.
So if activated LV is replicator-dev LV - read all remote VGs.
2010-05-21 14:34:01 +00:00
Milan Broz
5899d9b442 Another one internal device layer fix... 2010-05-14 12:39:52 +00:00
Milan Broz
40026b0762 Fix empty layer detection is scan devices. 2010-05-14 12:30:43 +00:00
Milan Broz
83b4f8366a Fix device_is_usable to properly detect only internal LV names. 2010-05-14 12:03:32 +00:00
Milan Broz
2b129732b0 Skip also special lvm devices in scan (if ignore suspended is used).
This should avoid various races between dmeventd on multiple nodes
in cluster where one node already repairing device and another
run full scan and locks the device.
2010-05-13 18:38:38 +00:00
Peter Rajnoha
205ca4f8a7 Set appropriate udev flags for reserved LVs.
There's no need for foreign udev rules to touch LVM reserved devices
(snapshot, pvmove, _mlog, _mimage, _vorigin) even if they happen to
be visible. The same applies for /dev/disk content - no need to create
any content for these devices (and so no need to run any "blkid" etc.).
This also prevents setting any inotify "watch" from udev rules on such
devices that is a source of race conditions (the rules need to honor
DM_UDEV_DISABLE_OTHER_RULES_FLAG for this to work though).
2010-04-23 14:16:32 +00:00
Mike Snitzer
4a76f5c764 When removing a snapshot avoid preloading the origin if the
snapshot-merge target is not active.
2010-04-23 02:57:39 +00:00
Peter Rajnoha
647d948562 Use UUIDs instead of names while processing event handlers.
Internally, we used DM names instead of UUIDs while processing event
handlers. This caused problems while trying to vgrename a VG with active LVs
where the names are being changed and so the devices were not found then.
The patch also contains a little bit of refactoring, moving "build_dlid" code
found in dev_manager.c to "build_dm_uuid", now in lvm-string.c (so we have
build_dm_uuid and build_dm_name at one place).
2010-04-14 13:01:38 +00:00
Alasdair Kergon
687603a144 Fix incorrect removal of symlinks after LV deactivation fails. 2010-04-07 20:04:41 +00:00
Jonathan Earl Brassow
3318c41356 Add ability to create mirrored logs for mirror LVs.
This check-in enables the 'mirrored' log type.  It can be specified
by using the '--mirrorlog' option as follows:
#> lvcreate -m1 --mirrorlog mirrored -L 5G -n lv vg

I've also included a couple updates to the testsuite.  These updates
include tests for the new log type, and some fixes to some of the
*lvconvert* tests.
2010-03-26 22:15:43 +00:00
Zdenek Kabelac
0c897ecefd mlockall() -> mlock()
This patch adds a new implementation of locking function instead
of mlockall() that may lock way too much memory (>100MB).
New function instead uses mlock() system call and selectively locks
memory areas from /proc/self/maps trying to avoid locking areas
unused during lock-ed state.

Patch also adds struct cmd_context to all memlock() calls to have
access to configuration.

For backward compatibility functionality of mlockall()
is preserved with "activation/use_mlockall" flag.

As a simple check, locking and unlocking counts the amount of memory
and compares whether values are matching.
2010-03-05 14:48:33 +00:00
Milan Broz
c440f39874 Remove lvs_in_vg_activated_by_uuid_only call.
There is no difference from lvs_in_vg_activated now,
convert all users to this call.
2010-02-24 20:01:40 +00:00
Milan Broz
40090be220 Always query device by uuid only.
lvm2 devices have always UUID set even if imported from lvm1 metadata.

Patch removes name argument from dev_manager_info call and converts
all activation related calls to use query by UUID.

Also it simplifies mknode call (which is the only user on mknodes parameter).
2010-02-24 20:00:56 +00:00
Petr Rockai
e66d76ac5a Add _mlog devices to dependency trees using UUID, not name, in activation. 2010-02-23 15:49:52 +00:00
Mike Snitzer
eaef92b02f Refactor snapshot-merge deptree and device removal to support info-by-uuid
Add a merging snapshot to the deptree, using the "error" target, rather
than avoid adding it entirely.  This allows proper cleanup of the -cow
device without having to rename the -cow to use the origin's name as a
prefix.

Move the preloading of the origin LV, after a merge, from
lv_remove_single() to vg_remove_snapshot().  Having vg_remove_snapshot()
preload the origin allows the -cow device to be released so that it can
be removed via deactivate_lv().  lv_remove_single()'s deactivate_lv()
reliably removes the -cow device because the associated snapshot LV,
that is to be removed when a snapshot-merge completes, is always added
to the deptree (and kernel -- via "error" target).

Now when the snapshot LV is removed both the -cow and -real devices
get removed using uuid rather than device name.  This paves the way
for us to switch over to info-by-uuid queries.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2010-02-17 22:59:46 +00:00
Mike Snitzer
6c39b8f4f0 Add 'fail_if_percent_unsupported' arg to _percent() and _percent_run().
We unfortunately don't yet _know_, in dev_manager_snapshot_percent(), if
a snapshot-merge target is active (activation is deferred if dev is
open); so we can't short-circuit origin devices based purely on existing
LVM LV attributes.

Set 'fail_if_percent_unsupported' in dev_manager_snapshot_percent() for
a merging origin LV, otherwise passing unsupported LV types to _percent
will lead to a default successful return with percent_range as
PERCENT_100.

For a merging origin, PERCENT_100 will result in a polldaemon that runs
infinitely (because completion is PERCENT_0).
2010-02-10 14:38:24 +00:00
Mike Snitzer
4a9af35527 Remove false "failed to find tree node for <lv>" error from _cached_info().
When activating a merging origin it is valid, and expected, to not have
a node in the deptree for both the origin and its merging snapshot.  The
_cached_info() caller is only concerned with whether a device is open.
If there isn't a node in the tree the associated device is definitely
not open.
2010-02-08 23:28:06 +00:00
Milan Broz
1c33c0027f Always query device by using uuid only and not name in clvmd.
Otherwise confusion with the device of the same name
(but different UUID, e.g. non-lvm device) can happen.
2010-01-27 13:23:57 +00:00
Milan Broz
453bab220b Fix return code of info callbacks.
In dev_manager_info 0 means error and 1 info is returned,
not that device exists (that value is part of info struct).

Fix query by uuid only (no name) which returns 0 when device
does not exist.
2010-01-26 07:58:23 +00:00
Mike Snitzer
1199b48cd7 Eliminate extra ioctls just to check open_count in _add_new_lv_to_dtree.
DM >= 4.7.0 always returns open_count so just use the associated nodes'
existing info.

Introduce _cached_info() to get an LV's cached info.
2010-01-22 15:40:31 +00:00
Mike Snitzer
2e65b8ce5f Removed inactive_table check from _lv_has_target_type. This check
doesn't offer any benefit (that I can recall) and testing validates
that.
2010-01-22 13:28:54 +00:00
Mike Snitzer
13713bc147 Change dev_manager_mirror_percent()'s 'struct logical_volume *' to be
'const'.  Be consistent with its use (and dev_manager_snapshot_percent()).

Pass 'lv' from dev_manager_snapshot_percent() to _percent() to
_percent_run().  _percent_run() always dereferenced 'lv' (when
initializing segh) even though it may have been NULL (as was the case
until now for dev_manager_snapshot_percent()).

If a "snapshot-origin" LV (snapshot-merge whose merge was deferred
becuase it was open) was passed to _percent_run() it would always return
100%.

Update _percent_run() to NOT return PERCENT_100 et. al. if
->target_percent() wasn't ever called and supplied 'lv' is a merging
origin.  A default return of 100% does not work for snapshot-merge.

Also tweak a related lvconvert log_error() to include "Aborting merge."
2010-01-15 22:58:25 +00:00