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Some minimal set of changes to make vdo plugin compilable in stable branch:
Use older headers.
Implement simple vdo status parser to only resolve use-percentage.
Introduce VDO plugin for monitoring VDO devices.
This plugin can be used also by other users, as plugin checks
for UUID prefix 'LVM-' and run lvm actions only on those
devices.
Non LVM- device are only monitored and log warnings
when usage threshold reaches 80%.
Prohibit, because the tracking can't continue and
further conversions may fail with bogus error messages.
Resolves: rhbz1579072
(cherry picked from commit a004bb07f1)
Conflicts:
WHATS_NEW
Prohibit conversions of raid1 split trackchanges SubLVs
because they will fail to get merged back into the RaidLV.
Resolves: rhbz1579438
(cherry picked from commit 8b0729af0f)
Conflicts:
WHATS_NEW
Commit 3f35146 added a check on the value returned by the
_display_info_cols() function:
1024 if (!_switches[COLS_ARG])
1025 _display_info_long(dmt, &info);
1026 else
1027 r = _display_info_cols(dmt, &info);
1028
1029 return r;
This exposes a bug in the dmstats code in _display_info_cols:
the fact that a device has no regions is explicitly not an error
(and is documented as such in the code), but since the return
code is not changed before leaving the function it is now treated
as an error leading to:
# dmstats list
Command failed.
When no regions exist.
Set the return code to the correct value before returning.
(cherry picked from commit 29b9ccd261)
Conversions of LVs under snapshot to thinpool or cachepool
correctly fail but leave them inactive and provide cryptic
error messages like 'Internal error: #LVs (10) != #visible
LVs (2) + #snapshots (1) + #internal LVs (5) in VG VG'.
Reject and provide better error message.
Resolves: rhbz1514146
(cherry picked from commit 2214dc12c3)
The 'lvconvert LV' command def has caused multiple problems
for command matching because it matches the required options
of any lvconvert command. Any lvconvert with incorrect options
ends up matching 'lvconvert LV', which then produces an error
about incorrect options being used for 'lvconvert LV'. This
prevents suggestions from nearest-command partial command matches.
Add a special case for 'lvconvert LV' so that it won't be used
as a partial match for a command that has options specified.
When lvm2 command is executed in test mode, discard ioctl is skipped.
This may cause even data-loose in case, issuing discard for released
areas was enabled and user 'tested' lvreduce.
When allocating thin-pool with more then 1 device - try to
allocate 'metadataLV' with reuse of log-type allocation for mirror LV.
It should be naturally place on other device then 'dataLV'.
However due to somewhat hard to follow allocation logic code,
it's been rejected allocation in cases where there was not
enough space for data or metadata on single PV, thus to successed,
usage of segments was mandatory.
While user may use:
allocation/thin_pool_metadata_require_separate_pvs=1
to enforce separe meta and data LV - on default settings, this is not
enable thus segment allocation is meant to work.
NOTE:
As already said - the original intention of this whole 'if()' is unclear,
so try to split this test into multiple more simple tests that are more readable.
TODO: more validation.
Amound of linked libraries grows.
Most of them we don't need to lock in, since we are not using
them in locked section, so skip locking them in memory.
Commit a30e622279:
"scan: work around udev problems by avoiding open RDWR"
had us reopen a device RDWR in the write function. Since
we know earlier that the command intends to write to devices
in the VG, we can reopen the VG's devices RDWR during the
rescan instead of waiting until the writes to happen.
Add tests for linear <-> striped|raid* conversions.
Add region_size config to reshape tests to avoid test
failures in case of it being defined unexpectedly in lvm.conf.
Related: rhbz1439925
Related: rhbz1447809
(cherry picked from commit 3810fd8d0d)
"lvconvert --type {linear|striped|raid*} ..." on a striped/linear
LV provides convenience interim type to convert to the requested
final layout similar to the given raid* <-> raid* conveninece types.
Whilst on it, add missing raid5_n convenince type from raid5* to raid10.
Resolves: rhbz1439925
Resolves: rhbz1447809
Resolves: rhbz1573255
(cherry picked from commit bd7cdd0b09)
When pvmoving LV - the target for LV is a mirror so the validation
that checked the type is matching was incorrect.
While we need a more generic enhancment of LVS output for pvmoved LVs,
for now at least stop showing internal errors and 'X' symbols in attrs.
Since we are using "DefaultDependencies=no" we do not get automatic STOP
job on socket connection - so automatically refuse connection on
shutdown by adding this Conflict definition to socket Unit.
udev creates a train wreck of events if we open devices
with RDWR. Until we can fix/disable/scrap udev, work around
this by opening RDONLY and then closing/reopening RDWR when
a write is needed. This invalidates the bcache blocks for
the device before writing so it can trigger unnecessary
rereading.
Commit c016b573ee "clvmd: separate saved_vg from vginfo"
created a separate hash table for the saved_vg structs.
The vg's referenced by the saved_vg struct were all being
freed properly, but the svg wrapper struct itself was not
being freed.
