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A command def can include a specific constant option value,
but the value was not being checked for optional opts.
e.g. this is an incorrect command and does not match any
command defs:
lvconvert --type cache --cachepool vg/lv
However, it was mistakely being matched to this cmd def,
where the required options match, but the optional options
do not:
lonvert --cachepool LV_linear_striped_raid_cachepool
OO: --type cache-pool, ...
The optional options were mistakely considered matching
because 'cache' and 'cache-pool' were not being compared.
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
lvchange/lvconvert operations that do not require the LV
to already be active need to acquire a transient LV lock
before changing/converting the LV to ensure the LV is not
active on another host. If the LV is already active,
a persistent LV lock already exists on the host and the
transient LV lock request is a no-op.
Some lvmlockd locks in lvchange were lost in the cmd def
changes. The lvmlockd locks in lvconvert seem to have
been missed from the start.
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.
The actual value specified by the --poll y|n option was not
being used. The way the --poll value is used is hidden
through an indirection where the value is stored in a
global variable at the start of the command, and then the
value is read from there later. Setting the global
variable early in the command had been lost with the
cmd def changes.
Fill in some gaps where old versions of lvm allowed
--poll and --monitor in combination with other operations,
but those combinations had been lost since the cmd def work.
(The new cmd def code also added some combinations that
had been missed by the old code.)
Changes:
lvchange --activate: add poll and monitor options, and
add calls to them in implementation.
lvchange --refresh: add monitor option (poll already there),
and call to monitor in implementation.
lvchange <metadata ops>: add poll and monitor options, and
add calls to them in implementation.
vgchange <metadata ops>: add poll option (call to poll
already in implementation).
vgchange --refresh: remove monitor option (not used by code)
lvchange --persistent y: add poll and monitor options, and
add calls to them, and to activate
in the implementation. (Making it
match the main lvchange metadata
command.)
Summary of current usage:
lvchange --activate: monitor, poll
vgchange --activate: monitor, poll
lvchange --refresh: monitor, poll
vgchange --refresh: poll
lvchange --monitor: ok
lvchange --poll: ok
lvchange --monitor --poll: ok
vgchange --monitor: ok
vgchange --poll: ok
vgchange --monitor --poll: ok
lvchange <metadata ops>: monitor, poll
vgchange <metadata ops>: poll
Enhance commit 25b5915c9b
to process options requiring immediate metadata commits
and reloads after those we can group together doing just
one commit and an optional reload for the whole group.
Backup metadata after processing options successfully.
Related: rhbz1437611
Don't abbreviate the --help output quite as much
when there are many command defs. Print all the
options in the cmd defs that are shown. --longhelp
output is unchanged and includes everything.
These days --partial is only used with activation in
lvchange/vgchange. It probably had another meaning
at some point in history which is no longer used,
so ignore it in those cases.
When included in the OO list, the option is advertised in
help/man output, implying it is meaningful to the command,
when in fact the command never uses it.
The IO list means the option won't cause an error if it's
used, but is not displayed as an valid option for the command.
If the option is not included in either OO or IO lists,
using the option would cause a command error, which would cause
problems for anyone is using the option for historical reasons.
_lvchange_properties_single() processes multiple command
line arguments in a loop causing metadata updates and/or
backups per argument.
Optimize to only perform one update and/or backup
(but necessary interim ones; e.g. for --resync)
per command run.
Related: rhbz1437611
Use only selected paths for finding .so in builddir.
So if builddir constains some embeded subdirs with some more
occurences of project (i.e. 'make rpm' build subdir)
those library paths will not get into list.
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.
Fix a regression introduced by new command line processing
(see starting commit 1e2420bca8)
causing activation to be rejected in combination with setting
persistent minor device numbers.
Resolves: rhbz1437611
