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Simplify info run for use only for INFO & STATUS.
Drop handling MKNODES within _info_run() call
and use more advanced _setup_task_run() directly.
This allows to further simplify _info_run().
Integrate also query for inactive table and
handle dm_task_run() and dm_task_get_info()
(thus switching to setup_task_run)
Add one exception case for DM_DEVICE_TARGET_MSG.
This allows further shortening and simplification of all
other users of this function.
It's actually not needed to call extra lv_has_target_type() to detect
snapshot merge is in progress - decode this right during status
capturing and save even few extra ioctl calls.
Drop LV from passed API arg - it's always segment being checked.
Also use_layer is now in full control of lv_info_with_seg_status().
It decides which device needs to be checked to get 'the most info'.
TODO: future version should be able to expose status from
Start moving selection of status taken for a LV into a single place.
The logic for showing info & status has been spread over multiple
places and were doing too complex decision going agains each other.
Unify selection of status of origin & cow scanned device.
TODO: in future we want to grab status for LV and layered LV and have
both statuses present for display - i.e. when 'old snapshot'
of thinLV is takes and there is ongoing merge - at some moment
we are not capable to show all needed info.
When lvm2 wants to see a status, it needs to validate,
segment for status reading is matching whan lvm2 expects in
metadata.
Also ensure status failure will not cause '0' from info reading
when actual info was collected properly.
Failure in 'status' reading is considered to be
a 'log_warn()' event only.
When we can't parse status, switch to warning as this is not
considered an errornous case. LVS is not supposed to return
error status code when device is not what it's been expected to
be - but it should be WARNING a user there is something unexpected.
Convert lvs -o lv_merge_failed,lv_snapshot_invalid to use
lv_info_and_status function.
This makes it equal to attr value showing this info
(as they were different since they were derived from
different data set and different logic as well).
Also saves couple extra ioctl that were needed to obtain this info.
When displaying <reporting_command> -o help, we'd like to have fields
grouped nicely, not starting having groups interleaved as it was before.
The code that displays the help output for fields takes the order as
written in columns.h file - this caused output like:
$ lvs -o help
Logical Volume Fields
---------------------
...field list...
Logical Volume Device Info and Status Combined Fields
-----------------------------------------------------
...field list...
Logical Volume Fields
---------------------
...field list...
Logical Volume Device Status Fields
-----------------------------------
...field list...
Logical Volume Fields
---------------------
...field list...
Instead, let's have it without groups interleaved which may be
a bit confusing, so:
Logical Volume Fields
---------------------
...field list...
Logical Volume Device Status Fields
-----------------------------------
...field list...
Logical Volume Device Info and Status Combined Fields
-----------------------------------------------------
...field list...
..and so on.
Use LVM_DBUSD_TEST_MODE env variable to customize what we test.
Default is the same where we try to test all combinations of all
modes. Renamed to make it consistent with the other env variables
that are used in the unit test.
- We check that all properties match the introspection data. We
don't verify values for every property as only lvm knows what they
should be.
- We are testing vg.Move
Added a properties changed signal on the job dbus object so that client
can wait for a signal that the job is complete instead of polling or
blocking on the wait method.
Allows the user to override the number of commands that get dumped
to the log when we encounter a lvm error. Also useful during
development when you don't want to see the blackbox output.
In case any SubLV of a RaidLV transiently fails, it needs
two "lvchange --refresh RaidLV" runs to get it to fully
operational mode again. Reason being, that lvm reloads all
targets for the RaidLV tree but doesn't resume the SubLVs
until after the whole tree has been reloaded in the first
refresh run. Thus the live mapping table of the SubLVs
still point to an "error" mapping and the dm-raid target
can't retrieve any superblock from the MetaLV(s) in processing
the constructor during this preload thus not discovering the
again accessible SubLVs. In the second run, the SubLV targets
map proper (meta)data, hence the constructor discovers those
fine now.
Solve by resuming the SubLVs of the RaidLV before
preloading the respective top-level RaidLV target.
Resolves: rhbz1399844
When reading data from stdout & stderr we were reading until the
reading until we got None back which really isn't needed as the
read will return everything that is available.
Avoid code duplication and use exiting commonly used
lv_update_and_reload() function.
There is still one place left where mirror is doing strange
double suspend call - needs there more thinking what's wrong with
that code.
