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Since lvmetad is using 'MISSING' in status for 'another' purpose,
we need to support ATM also flag get from this place.
Until fixed better - we accept both flags - alhough lvm2 will
only print in flags.
Switch METADATA_FORMAT flag usage to be stored via segtype
instead of 'status' flag which appeared to cause major
incompatibility troubles.
For backward compatiblity segtype flags are still accepted also
via 'status' bits which were used from version 2.02.169 so metadata
saved by this newer lvm2 version should still work nicely, although
new save version will no longer work on this older lvm2 version.
Allow storing LV status bits with segment type name field.
Switching to this since this field has better support for compatibility
with older version of lvm2 - since such unknown segtype will not cause
complete invisiblity of metadata from older lvm2 code - just the
particular LV will become unusable with unknown type of segment.
Commit 5fe07d3574ddce3d194f0fa57af9028348a91008 failed to set raid5 types
properly on conversions from raid6. It always enforced raid6_ls_6
for types raid6/raid6_zr/raid6_nr/raid6_nc, thus requiring 3 conversions
instead of 2 when asking for raid5_{la,rs,ra,n}.
Related: rhbz1439403
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
_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
There are certain situations (not fully understood)
where is_missing_pv() is false, but pv->dev is NULL,
so this adds a check for NULL pv->dev after is_missing_pv()
to avoid a segfault.
lvconvert parameters not causing a conversion (i.e. no type,
number of stripes, stripesize or regionsize changes) will
remove any allocated reshape space in which case the command
returns success. If reshape space does not exist though,
return error.
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.
Reshape check failed when regionsize changed and current raid type
was provided with no other change requested (stripes or stripesize).
E.g. "lvconvert --type raid6 --regionsize 256K" on a raid6 LV
with != 256K regionsize.
Enable --type in test script.
Remove any newly allocated sub LV (pair) remnants in case
allocation fails due to lag of (parallel) free PV space
and keep initial raid type.
Resolves: rhbz1438013
SIGINT isn't blocked properly after a sigint_allow(),
sigint_restore() cycle leading to illicit interruptable
metadata updates. These can leave corrupted metadata behind.
Issues addressed in this commit:
sigint_allow() fails to set _oldmasked[] members properly due
to an offset by one bug on indexing the members of the array.
It bails out prematurely comparing to MAX_SIGINTS causing nesting
depths to be one less than MAX_SIGINTS. Fix the comparision.
Correct the related comparison flaw in sigint_restore().
Initialize all sig_atomic_t variables consequently.
Resolves: rhbz1440766
Avoid error message
"Logical Volume *_rimage_0 already exists in volume group,,,"
on takeover conversion from a 2-legged raid1 to raid4
(aiming to reshape it adding images).
Resolves: rhbz1439398
Requesting _raid_remove_images() to commit the
metadata missed to reload the origin causing a
kernel takeover error converting a 2-legged raid1
(with previously removed images) to raid5.
Allow the combination of both arguments keeping
the raid level but changing the regionssize
(e.g. "lvconvert --type raid1 --regionsize 1M RaidLV"
on an existing raid1 LV).
Resolves: rhbz1438396
With monolithic kernels we can't actually modprobe
for cache modules as they are already compiled-in
and policy modules do not export version symbol.
Reported issue on list:
https://www.redhat.com/archives/dm-devel/2017-March/msg00061.html
Fix will try to look for explicit kernel symbols first before
calling modprobe.
