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Commit Graph

6492 Commits

Author SHA1 Message Date
Mike Snitzer
7281c3ab01 Prompt if request is made to remove a snapshot whose "Merge failed". 2012-01-20 22:04:16 +00:00
Mike Snitzer
27393d999c Allow removal of an invalid snapshot that was to be merged on next activation.
Don't allow a user to merge an invalid snapshot.
2012-01-20 22:03:48 +00:00
Mike Snitzer
2ff68cece1 Use m and M lv_attr to indicate that a snapshot merge failed in lvs.
snapshot (m)erge failed, suspended snapshot (M)erge failed
2012-01-20 22:03:03 +00:00
Mike Snitzer
c25ad6e873 Differentiate between snapshot status of "Invalid" and "Merge failed". 2012-01-20 22:02:04 +00:00
Mike Snitzer
e756b80f56 Lookup snapshot usage percent of origin when a snapshot is merging. 2012-01-20 21:56:01 +00:00
Zdenek Kabelac
079473f10a Update lvdisplay to show more info about thin LVs
Reformat name and path how the LV is represented with lvm1 compatible option,
to switch to the old way - which had number of  problem - i.e. many links
do not exist - since for private devices we are not creating them.
Add more info about thin pools and volumes.
2012-01-20 16:59:58 +00:00
Zdenek Kabelac
ba92f67e23 Minor cleanup
Simplier and more readable char pointer math.
2012-01-20 11:01:56 +00:00
Zdenek Kabelac
e1eeb8e908 Thin until proper vgcfgrestore for thin is implementad, disable restore.
Since it may probably do more harm to leave it enabled - add extra test
for presence of thin volumes in VG, and in this case disable restore.
2012-01-20 11:01:13 +00:00
Zdenek Kabelac
76b1e2d9b1 Thin forgotten initialisation of pointer to NULL
Since the code may go in error path, set to defined NULL.
2012-01-20 10:59:26 +00:00
Zdenek Kabelac
8aa66458a3 Tiny cleanup
Just remove double braces from conditions when they are not really needed.
(So it doesn't look like an assignment and comparison).
2012-01-20 10:58:17 +00:00
Zdenek Kabelac
9abe5853b2 Thin cleanup
Reorder condition so the code is better readable (and shorter).
2012-01-20 10:56:30 +00:00
Zdenek Kabelac
a563ef56b8 Drop hack in segtype reporting
Since striped name function knows when to report 'linear' instead of
'stripe' type name - drop it from this place.

This fixes problem when reporting segtype e.g. for thin-pool which
is also using area_count=1 to store thin data device reference.

It also returns properly strduped memory instead of badly casted const char*.
2012-01-20 10:55:28 +00:00
Zdenek Kabelac
3486e8332d Thin extend lvcreate man page about snapshot support 2012-01-20 10:50:39 +00:00
Alasdair Kergon
cf22ba1971 . 2012-01-20 03:56:18 +00:00
Alasdair Kergon
3e8e48f9d0 improve comment 2012-01-20 03:46:52 +00:00
Jonathan Earl Brassow
6bcd3263c2 Preserve exclusive activation of cluster mirror when converting.
This patch to the suspend code - like the similar change for resume -
queries the lock mode of a cluster volume and records whether it is active
exclusively.  This is necessary for suspend due to the possibility of
preloading targets.  Failure to check to exclusivity causes the cluster target
of an exclusively activated mirror to be used when converting - rather than
the single machine target.
2012-01-20 00:27:18 +00:00
Zdenek Kabelac
f7a26917f2 Drop unimplemented 2012-01-19 16:22:42 +00:00
Zdenek Kabelac
946166795e Drop unused variable 2012-01-19 15:59:51 +00:00
Zdenek Kabelac
62fa6a8289 Thin indent update 2012-01-19 15:42:18 +00:00
Zdenek Kabelac
8aa21348d1 Thin disable snapshot creation when pool is over the threshold.
Since snapshot needs to suspend origin - it might lead to pool userspace
deadlock (as the pool will wait for new space in case it would be overfilled,
but dmeventd would not be able to resize it, as the lvcreate operation would
have kept the VG lock.)
To minimize the risk of such scenario - we prevent to create new snapshot
in case we are over the threshold - but beware, there is still small timewindow,
so keep threshold at some reasonable level!
2012-01-19 15:39:41 +00:00
Zdenek Kabelac
8d3933945a Thin add new display field for lvs
New field Data% is able to display info about
thin_pool, thin, snapshot and has generic meaning here.

Simple Time/Host field are here to display host and time creation.
2012-01-19 15:34:32 +00:00
Zdenek Kabelac
06849a0d6a Add support to keep info about creation time and host for each LV
Basic support to keep info when the LV was created.
Host and time is stored into LV mda section.

FIXME: Current version doesn't support configurable string via lvm.conf
and used fixed version strftime "%Y-%m-%d %T %z".
2012-01-19 15:31:45 +00:00
Zdenek Kabelac
491d106031 Thin add function to read thin volume percent
This value returns percentage of 'mapped' size compared with total LV size.
(Without passed seg pointer it return highest mapped size - but it's
not used yet.)
2012-01-19 15:27:54 +00:00
Zdenek Kabelac
9fae965546 Thin updated support for thin pool percent
Support to check also for metadata percent
(By checking whether seg pointer is set)
2012-01-19 15:25:37 +00:00
Zdenek Kabelac
57979a273c Thin rename seg var pool_metadata_lv to metadata_lv
Better fits the code.
2012-01-19 15:23:50 +00:00
Zdenek Kabelac
4174dad301 Thin handle empty thin volume case
Report both values as 0 in case the volume is unused.
2012-01-19 15:22:32 +00:00
Zdenek Kabelac
a1224b2da8 Thin use consistentely metadata
Do not shortcut to 'meta' and stay with 'metadata'
Also matches kernel doc for dm API then.
2012-01-19 15:21:23 +00:00
Zdenek Kabelac
440a4d4c76 Thin rename local static
Use '_' for local const char.
2012-01-19 15:19:18 +00:00
Zdenek Kabelac
3a55acee5b Rename internal macro to match signess
Since _read_int64 called dm_config_get_uint64, rename it to
less confusing _read_uint64.
2012-01-19 15:17:46 +00:00
Zdenek Kabelac
dd0fc6d3a8 Update for gcc old-style 2012-01-19 15:16:39 +00:00
Alasdair Kergon
5c9bebee8a Add dmsetup 'wipe_table' to replace table with one that uses error target. 2012-01-18 18:52:02 +00:00
Peter Rajnoha
de0822a2bf Move dm_task_set_newname from libdm-iface.c to libdm-common.c 2012-01-17 14:36:58 +00:00
Petr Rockai
693e6e76a9 Beef up the lvmetad code with more functionality and a bunch of bugfixes. There
used to be a few mis-ordered memory accesses (release and access in the next
block). Fix that set_flag could have sometimes corrupted the flags being
modified.

A few issues with metadata tracking are sorted out as well now, and there are
only a few problems remaining before we can integrate lvmetad, mostly on the
client side:

- metadata areas need to be tracked in lvmetad (most likely to be addressed
  through an extension of metadata, meaning no special support in lvmetad would
  be needed)
- non-udev scanning code needs to be taught about telling lvmetad about device
  disappearance (pvscan most importantly)
- this last item also needs to mesh with metadata inconsistencies and
  suddenly-incomplete volume groups (aux disable_dev in tests); udev-based
  scanning should address this separately and more elegantly
2012-01-16 08:25:32 +00:00
Petr Rockai
5463a05a32 Fix a boundary condition in read_buffer in daemon-shared.c. 2012-01-16 05:09:16 +00:00
Petr Rockai
e3b4fe6ed2 Fix prototypes for daemon_send_simple (const char). 2012-01-15 15:16:50 +00:00
Petr Rockai
921de583f4 Unfortunately, blank lines are sometimes produced by config serializer, and
this interferes with their role as message separator in the lvmetad
protocol. Switch to using "##" on an otherwise blank line as a separator.
2012-01-15 11:17:16 +00:00
Petr Rockai
e31a3a6da6 Fix a couple of resource leaks in daemon-common server code -- filehandles and
unjoined threads were leaked for each connection.
2012-01-15 10:33:41 +00:00
Alasdair Kergon
55bdb63f34 Make error message hit when preallocated memlock memory exceeded clearer. 2012-01-12 18:29:07 +00:00
Alasdair Kergon
75fe459800 Show read-only activation in display tools. 2012-01-12 16:58:43 +00:00
Peter Rajnoha
5bafde0b6f Missing const.
"warning: assignment discards 'const' qualifier..."
2012-01-12 09:08:55 +00:00
Alasdair Kergon
57fafd762f Add activation/read_only_volume_list to override LV permission in metadata. 2012-01-12 02:32:09 +00:00
Alasdair Kergon
642da16c33 Add activation/read_only_volume_list to override LV permission in metadata. 2012-01-12 01:51:56 +00:00
Alasdair Kergon
661f154b66 Give priority to emcpower devices with duplicate PVIDs. 2012-01-11 20:38:42 +00:00
Peter Rajnoha
8227bf45d1 Support different device name types on output of dmsetup deps, ls and info -c command.
Add 'blkdevname' and 'blkdevs_used' field to dmsetup info -c -o.
Add 'blkdevname' option to dmsetup ls --tree to see block device names.
Add '-o options' to dmsetup deps and ls to select device name type on output.
2012-01-11 12:46:19 +00:00
Peter Rajnoha
ad96b1b460 Add dm_device_get_name to get map name or block device name for given devno.
This is accomplished by reading associated sysfs information. For a dm device,
this is /sys/dev/block/major:minor/dm/name (supported in kernel version >= 2.6.29,
for older kernels, the behaviour is the same as for non-dm devices).

For a non-dm device, this is a readlink on /sys/dev/block/major:minor, e.g.
  /sys/dev/block/253:0 --> ../../devices/virtual/block/dm-0.
The last component of the path is a proper kernel name (block device name).

One can request to read only kernel names by setting the 'prefer_kernel_name'
argument if needed.
2012-01-11 12:34:44 +00:00
Alasdair Kergon
ee1e9fcd22 Add dm_uuid_prefix/dm_set_uuid_prefix for non-lvm users to override hard-coded
LVM- prefix.

Try harder not to leave stray empty devices around (locally or remotely) when
reverting changes after failures while there are inactive tables.
2012-01-10 02:03:31 +00:00
Zdenek Kabelac
7da3845926 Check for error code in _adjust_policy_params
If error is detected in _adjust_policy_params, break further command processing.
2012-01-09 12:31:52 +00:00
Zdenek Kabelac
8a3960d217 Minor oldstyle warning update 2012-01-09 12:29:15 +00:00
Zdenek Kabelac
99a1830b46 Improve readahead in dmsetup man page 2012-01-09 12:28:47 +00:00
Zdenek Kabelac
6cf41f5503 Use sysfs to set/get of read-ahead
If we know major:minor number of device (which is known after resume) we will
try to use  sysfs to set/get read ahead parameters of device.
This avoid potential problem of blocking commands like 'dmsetup info' awaiting
for device being usable for open/close - i.e. overfilled thin pool may block
such command.
2012-01-09 12:26:14 +00:00