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Just as 'e' means activation with an exclusive lock,
add an 's' to mean activation with a shared lock.
This allows the existing but implicit behavior of '-ay'
of clvm LVs to be specified explicitly. For local VGs,
asy simply means ay, just like aey means ay.
For local VGs, ay == aey == asy
For clvm VGs, ay == asy, aey == aey, asy == asy
The hyphens are removed from long option names before
being read. This means that:
- Option name specifications in args.h must not include hyphens.
(The hyphen in 'use-policies' is removed.)
- A user can include hyphens anywhere in the option name.
All the following are equivalent:
--vgmetadatacopies,
--vg-metadata-copies,
--v-g-m-e-t-a-d-a-t-a-c-o-p-i-e-s-
lvmetad_init() should not be called with open connection to the daemon.
Doing so is considered to be an internall error within lvm2 code.
Such coincidence can't occur within current code. Let's assure us it won't
ever happen.
Some of descritpions were misleading at least. Some were completely
off the reality.
lvmetad_init doesn't re-establish or initialise a connection
lvmetad_active and lvmetad_connect_or_warn can do so.
There are reports of unexplained ioctl failures when using dmeventd.
An explanation might be that the wrong value of errno is being used.
Change libdevmapper to store an errno set by from dm ioctl() directly
and provide it to the caller through a new dm_task_get_errno() function.
[Replaced f9510548667754d9209b232348ccd2d806c0f1d8]
Commit b00711e312 improperly
convert _area_missing() replacment and moved check for
AREA_PV seg_type() into same if() section.
Signed-off-by: Lidong Zhong <lzhong@suse.com>
If lvmetad is not used, we generate lvm2-activation{-early,-net}.service
systemd services to activate any VGs found on the system. So far we used
--sysinit during this activation as polling was still forked off of the
lvm activation command.
This has changed with lvmpolld - we have proper lvmpolld systemd
service now (activated via its socket unit). As such, we don't need
to use --sysinit anymore during activation in systemd environment
as polling was the only barrier to remove the need for --sysinit.
There's a race when asking lvmpolld about progress_status and
actually reading the progress info from kernel:
Even with lvmpolld being used we read status info from
LVM2 command issued by a user (client side from lvmpolld perspective).
The whole cycle may look like following:
1) set up an operation that requires polling (i.e. pvmove /dev/sda)
2) notify lvmpolld about such operation (lvmpolld_poll_init())
3) in case 1) was not called with --background it would continue with:
4) Ask lvmpolld about progress status. it may respond with one of:
a) in_progress
b) not_found
c) finished
d) any low level error
5) provided the answer was 4a) try to read progress info from polling LV
(i.e. vg00/pvmove1). Repeat steps 4) and 5) until the answer is != 4a).
And now we got into racy configuration: lvmpolld answered with in_progress
but it may be the that in_between 4) and 5) the operation has already
finished and polling LV is already gone or there's nothing to ask for.
Up to now, 5) would report warning and it could print such warning many
times if --interval was set to 0.
We don't want to scary users by warnings in such situation so let's just
print these messages in verbose mode. Error messages due to error while
reading kernel status info (on existing, active and locked LV) remained
the same.
Avoid using make's $(shell invocation since the eval order is
then somewhat different and use $$( subshell.
This also fixes a problem when more then one symbol is found,
since target shell has been given separate word list
so the 'R' assignment would need "" around it.
