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Commit 34504855a7 introduced
flag LV_RESHAPE_DATA_OFFSET and used it to avoid incompatible
activation on older runtime.
Enhance vg_validate() raid checking functions with checks for it.
In order to reject out of place reshaping with segment data_offset
field on old runtime, add a respective segment type incompatibility
flag causing "+RESHAPE_DATA_OFFSET" to be suffixed to the segment
type name.
When reshape space is allocated anew, an update and reload is needed to
promote the new size to the cluster node with the exclusively active RaidLV
or reloading the RaidLV will fail with a size related error. Additionally,
store "data_offset <sectors>" with the RaidLV in the lvm2 metadata so that
it can be retrieved on cluster nodes.
Process allocation of reshape space on a 2-legged raid4/5 (interim layout
to convert from/to linear via raid1) properly in the cluster.
Resolves: rhbz1461562
Resolves: rhbz1448116
If the activation step in lvcreate fails (e.g. the specified
minor number is already used), then the lvcreate is reverted,
but the LV lock in lvmlockd was not being unlocked or properly
freed.
With commit 41c10034aa we actually
do require LV to be used with _vg_write_lv_suspend_commit_backup().
So write a proper separte single wrapper for write && commit && backup.
Since we discovered status reporting from 'md' goes from large set
of weird states we can't just decided based on this word.
So let it pass for rebuild and idle as well
and check for health devices afterwards.
When raid leg rimage device is marked as 'D'ead by mdcore,
lvm2 was not able to replace such device with allocate policy,
as device has not appared as missing.
Add detection of transiently failing devices.
Basically reverting commit 58a9f88b8c.
We can use origin_only in case we are snapshot's origin,
as we do support this stack.
So when we are 'uncaching' origin+snaps - we do need to reload only
origin and we do not need to play with snaps.
Handle change of 'region size' better and follow also standard rule
if the command can't success (i.e. size is already same) we return
error for all such cases.
Also log_pring more info about adjusted value (just like we
do for rounding)
Also avoid keep pointers on 'display_*' values - they are in
ringbuffer for immediate use - not to be kept across multiple calls
(as they could be already overwritten by later calls) - so dropped
seg_region_size_str
Since cache LV can be a stacked device, there is no real reason
trying to use slight optimised tree for origin_only cache reload
(it could be even wrongly implemented in this case).
We can easily go with stardard tree load here.
When user runs command like 'lvconvert --splitcache' the operation
might be actually either slow or not making any progress in kernel,
so lets give user a chance to abort such operation.
When user press 'Ctrl+C' device table is restored to pre-flushing state.
Remove explicit activation of SubLVs and let lv_update_and_reload()
perform the proper (pre-)loading sequencing of tables.
This avoids related callback functions which are removed.
Related: rhbz1448116
Related: rhbz1461526
Related: rhbz1448123
When lock-holding LV differs from actually request locked LV,
we drop origin_only flag as it has no use - it'd be applied
on completely different LV.
Example of problem:
Raid is thin-pool _tdata LV.
Raid run origin_only locking on stacked device.
As lock holder is discovered thinLV.
Whole origin_only operation is then applied only on thinLV
changing the meaning of whole operation.
NOTE: this patch does not change anything for LV that are
already top-level lock holding LVs (i.e. thinLVs, snahoshots/origins).
Disable until we have a proper fix for reshape space allocation,
switching it to begin/end of rimages and activation in the cluster.
Related: rhbz1448116
Related: rhbz1461526
Related: rhbz1448123
