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Split description for display commands so we can better describe
it's usage and combination of individual options in man page.
Now we can separately describe:
lvdisplay, lvdisplay -c, lvdisplay -C
vgdisplay, vgdisplay -c, vgdisplay -C
pvdisplay, pvdisplay -c, pvdisplay -C
TODO: Drop validation from command code itself.
Update the _print_man_option_desc() to also handle common parts
as the initial text without any specified section and also
add support for '#\n' to be able to revert to common part.
Avoid printing lvm2 command trace, if the test finds the 'dmeventd'
was started unxpectedly during testing as the last command is hardly
ever responsible for this
Also reorder some messages when doing teardown of devices.
Do not print 'help' message from hostname command, when it does
not support option '-I'.
Since we now keep lv names valid all the time (as they are part
of radix_tree) - there is a problem with this renaming code, that
for a moment used duplicated name in vg struct.
Fix it by interating LVs backwared - which avoids breaking consitency
and also actually makes code more simple.
Add check for 'leaked' symlinks after test and trap
the case when some 'danglink' links are present.
This might be some problem with udev synchronization
or some other strange race.
All such symlinks will be also removed so they will not
influence following tests.
When command prints warning about suppressing query
for inactive table, because this is not supported
by kernel - 1 printed message is just enough, no
reason to 'spam' command output all the time, message
will remain only in debug log.
Also drop 'WARNING:' from real 'error' message.
WARNIGS are supposed to be just warning and command
then exists with 'success'.
When specifying minimum_io_size with --vdosettings,
command assumed wrong unit (sectors).
So '--vdosettings minimum_io_size=512|4096' resulted into
an error that only 512 or 4096 values are allowed, but
at the same time values 1 or 8 were accepted.
So fix by converting any number >= 512 to 'sectors' and
keep input of 1 or 8 still valid if anyone has been using
this before.
So now we take 512 or 4096 and still also 1 or 8 with the
same effect.
Also correct the 'error' message when invalid minimum_io_size
is specified.
The df -a looks at whole system and it returns an error code in case
there's an inaccessible fs which is not even part of the testing environment.
The -a for df is not actually needed here in the lvresize-xfs test, so remove it.
Fix stripe count and size parameter validation for RAID LVs and
include existing automatic setting of these parameters based
on current shape of the RAID LV in case these are not set
on command line fully.
Previously, this was done only to a certain subset given by this
condition (where the 'stripes' is the '-i|--stripes' cmd line arg
and the 'stripe_size' is actually the '-I|--stripesize' cmd line arg):
!(stripes == 1 || (stripes > 1 && stripe_size))
This condition is a bit harder to follow at first sight and there
are no comments around with explanation for why this one is used,
so let's analyze it a bit more.
First, let's convert this to an equivalent condition (De Morgan law)
so it's easier to read for humans:
stripes != 1 && !(stripes > 1 && stripe_size)
Note: Both stripe and stripesize are unsigned integers, so they can't be negative.
Now, based on that condition, we were running the code to deduce the
stripe/stripesize and do the checks ("the code") only if both of these
are true:
- stripes is different from 1
- we don't have stripes > 1 and stripe_size defined at the same time
But this is not correct in all cases, because:
A) if someone uses stripes = 0, then "the code" is executed
(correct)
B) if someone uses stripes = 1, then "the code" is not executed
(wrong: we still need to be able to check the args against
existing RAID LV stripes whether it matches)
- if someone uses stripes > 1, then "the code" is:
C) if stripe_size = 0, executed
(correct)
D) if stripe_size > 0, not executed
(wrong: we still want to check against existing RAID LV stripes)
Current issues with this condition:
The B) ends up with segfault.
❯ lvextend -i 1 -l+1 vg/lvol0
Rounding size 4.00 MiB (1 extents) up to stripe boundary size 8.00 MiB (2 extents).
Segmentation fault (core dumped)
The D) ends up with errors like:
❯ lvextend -i 3 -l+1 -I128k vg/lvol0
Rounding size 4.00 MiB (1 extents) up to stripe boundary size 8.00 MiB (2 extents).
Rounding size (4 extents) up to stripe boundary size for segment (5 extents).
Size of logical volume vg/lvol0 changed from 8.00 MiB (2 extents) to 20.00 MiB (5 extents).
LV lvol0: segment 1 with len=5 has inconsistent area_len 3
Couldn't read all logical volumes for volume group vg.
Failed to write VG vg.
Conclusion:
The condition needs to be removed so we always run "the code" to check
given striping args given on command line against existing RAID LV
striping. The reason is that we don't want to allow changing stripe
count for RAID LVs through lvextend and we need to end up with the
error:
"Unable to extend <RAID segment type> segment type with different number of stripes"
(We do support changing the striping by lvconvert's reshaping functionality only).
With commit acbeaa7a8d we started
to use symlinks to link test suite shell scripts, however
they remained within CLEAN_TARGETS.
So when running 'make clean' within non-srcdir build dir, we
were cleaning actuall shell script in this dir.
So remove list of this script from CLEAN_TARGETS in this case.
get_sizes_lockspace() may not always initilize all passed values
in case the bitfield would not trigger if() path.
So just in case keep the path initilized.
TODO: maybe add INTERNAL_ERROR to get_sizes_lockspace().
When converting a VG to locktype sanlock, a new
lease is allocated for each existing lv. Finding
a new lease location involved searching the lvmlock
LV from the start for an unused location, which
would be very slow with many LVs. Improve this by
starting each search from the last used location.
Fix regression from commit 7f29afdb06
"lvmlockd: configurable sanlock lease sizes on 4K disks"
That change failed to recognize that a running lockspace will not
exist in lvmlockd when converting a local VG to a sanlock VG, i.e.
vgchange --locktype sanlock vgname. When the vgchange attempted
to initialize new lv leases for existing LVs, lvmlockd would
return an error when it found no lockspace.
When searching for committed LV by uuid, this search can
be expensive for commands like 'vgremove' - so for
this part introduce 'lv_uuids' radix_tree that is
build with first access to lv_committed().
