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Coverity here is a bit 'blind' here and cannot resolve which
code paths are actually able to hit this code path.
(It's using 'statistic' to resolve all possible paths,
and it's not scanning 'individual' code paths.)
This just cleans warns and add 'cheap' tests.
Skip testing target_pvs for NULL, we already
dereference it in many other places.
If check would ever be needed - it needs to be
in front of _raid_extract_images().
Currently the code creates the log separately after allocating space for
the data and as no data allocation is needed this second time,
total_extents ends up holding zero so use new_extents directly instead.
When reading a foreign VG we cannot write it, since
it belongs to another host. When reading a shared VG
we cannot write it because we may not have an ex lock.
(Or we may be reading the shared VG while not using
lvmlockd in which case it's like reading a foreign VG.)
Add the same checks for wiping outdated PVs. We may
read a foreign or shared VG, or see the PVs, while
another host is part way through writing a new version
of the VG to the PVs. This might cause us to think
some of the PVs are outdated. We do not want to
write another host's PVs, especially when we may
wrongly conclude they are outdated.
This option could never have been printed in lvm2 metadata, so it could
be safely removed as it could have been set only as 0.
These configurable setting is supported via metadata profile.
Use single code to evaluate if the percentage value has
crossed threshold.
Recalculate amount value to always fit bellow
threshold so there are not need any extra reiterations
to reach this state in case policy amount is too small.
Since plugin's percentage compare has been fixed,
it's now revealed wrong compare here.
The logic for threshold is - to allow to go as high
as given value e.g. 80% - so if pool is exactlu 80%
full it's still allowed to use it (dmeventd will not
resize it).
Running "vgremove -f VG & pvs" results in the pvs
command reporting that the VG is not found or is
inconsistent. If the VG is gone or being removed,
the pvs command should just skip it and not print
errors about it.
"Not found" is because the pvs command created the
list of VGs to process, including VG, then vgremove
removed the VG, then the pvs command came to to read
the VG to process it and did not find it.
An "inconsistent" error could be reported if vgremove
had only partially completed removing VG when pvs did
vg_read on the VG to process it, causing pvs to find
the VG in a partially-removed state.
This fix adds a flag that pvs uses to ignore a VG
that can't be read or is inconsistent.
The lvmcache info might be resued, most notably in lvm shell.
We need to be sure that even lvmcache_info marked as invalid
is removed from the lvmcache so it does not confuse any subsequent
code/commands executed later on.
Problematic example with the lvm shell:
lvm> pvs
PV VG Fmt Attr PSize PFree
/dev/sda lvm2 --- 128.00m 128.00m
Before this patch (/dev/sda still displayed in a way):
======================================================
lvm> pvremove /dev/sda
Labels on physical volume "/dev/sda" successfully wiped
(without lvmetad)
lvm> pvs
No physical volume label read from /dev/sda
(with lvmetad)
lvm> pvs
PV VG Fmt Attr PSize PFree
/dev/sda lvm2 --- 128.00m 128.00m
With this patch applied:
========================
lvm> pvremove /dev/sda
Labels on physical volume "/dev/sda" successfully wiped
(without lvmetad)
lvm> pvs
(with lvmetad)
lvm> pvs
Before this patch:
$ lvs -a -o name,layout,role test/lvmlock
LV Layout Role
[lvmlock] linear public
With this patch applied:
$ lvs -a -o name,layout,role test/lvmlock
LV Layout Role
[lvmlock] linear private,lockd,sanlock
Add metadata_devices and seg_metadata_le_ranges report fields.
Currently only defined for raid, but should probably be extended
to all other segment types that don't report all their device
usage in the 'devices' field.
