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Add more validation to catch mainly renamed devices, where
filesystem utils are not able to handle devices properly,
as they are not addressed by major:minor by rather via some
symbolic path names which can change over time via rename operation.
Offer possible interim LV types and display their aliases
(e.g. raid5 and raid5_ls) for all conversions between
striped and any raid LVs in case user requests a type
not suitable to direct conversion.
E.g. running "lvconvert --type raid5 LV" on a striped
LV will replace raid5 aka raid5_ls (rotating parity)
with raid5_n (dedicated parity on last image).
User is asked to repeat the lvconvert command to get to the
requested LV type (raid5 aka raid5_ls in this example)
when such replacement occurs.
Resolves: rhbz1439403
Add an exception to not allowing lvchange to change properties
on hidden LVs. When a thin pool data LV is a cache LV, we
need to allow changing cache properties on the tdata sublv of
the thin pool.
Trap cases where the percentage calculation currently leads to an empty
LV and the message:
Internal error: Unable to create new logical volume with no extents
Additionally convert the calculated number of extents from physical to
logical when creating a mirror using a percentage that is based on
Physical Extents. Otherwise a command like 'lvcreate -m3 -l80%FREE'
can never leave any free space.
This brings the behaviour closer to that of lvresize.
(A further patch is needed to cover all the raid types.)
_check_reappeared_pv() incorrectly clears the MISSING_PV flags of
PVs with unknown devices.
While one caller avoids passing such PVs into the function, the other
doesn't. Move the check inside the function so it's not forgotten.
Without this patch, if the normal VG reading code tries to repair
inconsistent metadata while there is an unknown PV, it incorrectly
considers the missing PVs no longer to be missing and produces
incorrect 'pvs' output omitting the missing PV, for example.
Easy reproducer:
Create a VG with 3 PVs pv1, pv2, pv3.
Hide pv2.
Run vgreduce --removemissing.
Reinstate the hidden PV pv2 and at the same time hide a different PV
pv3.
Run 'pvs' - incorrect output.
Run 'pvs' again - correct output.
See https://bugzilla.redhat.com/1434054
Using any arg with a command name in a script file
would cause the command to fail.
The name of the script file being executed was being passed
to lvm_register_commands() and define_commands(), which
prevented command defs from being defined (simple commands
were still being defined only by name which was enough for those
to still work when run trivially with no args).
Unless a change of the regionsize is requested via "lvconvert -R N ...",
keep the region size when the number of images changes in a raid1 LV.
Related: rhbz1443705
Unless a change of the regionsize is requested via "lvconvert -R N ...",
keep the region size when the number of images changes in a raid1 LV.
Resolves: rhbz1443705
When metadata LV size was over DM_THIN_MAX_METADATA_SIZE sectors,
the info() routine was incorrectly trying to match bigger size,
while we do never pass any bigger device.
Fixing a case, where lvs should be displaying status for metadata
LV with 16GB size.
We have to unset the LoadState variable from previous use when we check
for systemd unit state. We use this variable to check if systemd services
are loaded or not and if it is loaded, we issue systemctl commands to
enable/disable and start/stop the service. We don't issue these commands
if the unit is not loaded to avoid error messages which may confuse users.
Removing some unused new lines and changing some incorrect "can't
release until this is fixed" comments. Rename license.txt to make
it clear its merely an included file, not itself a licence.
Better support for lvdisplay.
By default info about running (in kernel) cache status is printed.
To get 'segtype' info, user runs: 'lvdisplay -m', example:
--- Logical volume ---
LV Path /dev/vg/lvol0
LV Name lvol0
VG Name vg
LV UUID Y4uWuN-TBGk-duer-aPWl-yBWn-iFFR-RU1gg1
LV Write Access read/write
LV Creation host, time linux, 2017-03-01 20:52:39 +0100
LV Cache pool name lvol2
LV Cache origin name lvol0_corig
LV Status available
# open 0
LV Size 12,00 MiB
Cache used blocks 10,42%
Cache metadata blocks 0,49%
Cache dirty blocks 0,00%
Cache read hits/misses 112 / 34
Cache wrt hits/misses 133 / 0
Cache demotions 0
Cache promotions 20
Current LE 3
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Segments ---
Logical extents 0 to 2:
Type cache
Chunk size 64,00 KiB
Metadata format 1
Mode writethrough
Policy smq
Setting migration_threshold=100000
Cache pool read/writes metadata_format within its segment type..
For CachePoolLV unselected metadata format is NOT stored in metadata.
For CacheLV when metadata format is not present/selected in lvm2 metadata,
it's automatically assumed to be the version 1 (backward compatible).
To ensure older lvm2 will not 'miss-read' metadata with new version 2,
such LV is marked with METADATA_FORMAT status flag (segment is
specifying metadata format). So when cache uses metadata format 2,
it will become inaccesible on older system without such support.
(kernel dm cache < 1.10, lvm2 < 2.02.169).
Add new profilable configation setting to let user select
which metadata format of a created cache pool he wish to use.
By default the 'best' available format is autodetected at runtime,
but user may enforce format 1 or 2 ATM.
Code also detects availability for metadata2 supporting cache target.
In case of troubles user may easily Disable usage of this feature
by placing 'metadata2' into global/cache_disabled_features list.
Reuse same code for getting/setting cache parameters with lvcreate.
So there is single one place how to get vars from profiles and configs.
Variables declarations are moved to start of function and
there is no need to initialize them as they are always
defined by functions get_cache_params() and get_pool_params().
Since cache chunk might be huge and there is no technical need
to enforce rounding and there is actually more 'real' VG space
used then necessary - keep rounding on 'chunk' bounrary only
for thin volumes - where it's the space used anyway.
NB: we support conversion of any-size 'existing' LV into cached LV.
Fix missing reset of '*settings' pointer when no args were given.
Handle cache_chunk settings like all other settings, so it is properly
updated only with non-zero settings and the existing cache-pool
chunk_size is not being reconfigured.
User can specify metadata profile which stores important cache
geometry data for easy configuration.
Fix missing support for getting chunk_size, cache_mode, cache_policy
for a cache/cache pools volumes from configuration or metadata profile.
The fedorahosted git repository shuts down tomorrow:
https://communityblog.fedoraproject.org/fedorahosted-sunset-2017-02-28/
Our upstream git repository has moved back to sourceware.org.
Mailing list hosting is not changing.
Gitweb:
https://www.sourceware.org/git/?p=lvm2
Git:
git://sourceware.org/git/lvm2.git
ssh://sourceware.org/git/lvm2.git
http://sourceware.org/git/lvm2.git
Example command to change the origin of a repository clone:
Public:
git remote set-url origin git://sourceware.org/git/lvm2.git
Committers:
git remote set-url origin git+ssh://sourceware.org/git/lvm2.git
The MD kernel raid1 personality does no use any writemostly leg as the primary.
In case a previous linear LV holding data gets upconverted to
raid1 it becomes the primary leg of the new raid1 LV and a full
resynchronization is started to update the new legs.
No writemostly and/or writebehind setting may be allowed during
this initial, full synchronization period of this new raid1 LV
(using the lvchange(8) command), because that would change the
primary (i.e the previous linear LV) thus causing data loss.
lvchange has a bug not preventing this scenario.
Fix rejects setting writemostly and/or writebehind on resychronizing raid1 LVs.
Once we have status in the lvm2 metadata about the linear -> raid upconversion,
we may relax this constraint for other types of resynchronization
(e.g. for user requested "lvchange --resync ").
New lvchange-raid1-writemostly.sh test is added to the test suite.
Resolves: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=855895
Previously when lvremove tried to remove 'active' origin,
it had been asking for every 'snapshot' LV separately
and doing individual single snapshot removals first.
To be faster it now deactivates origin before removal
all connected snapshots.
This avoids multiple reloads of dm table for origin volume
which were unnecessary as origin was meant to be removed as well.
