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Revert 373372c8ab and instead update
our validation code to handle LVs with empty segment - currently
we should need this only for pvmove operation, thus such LV should
have name 'pvmove%u'.
This fixes a problem where user tried i.e. pvmove on a VG with single
PV - as reported: https://github.com/lvmteam/lvm2/issues/148
Reported-by: bob@redhat.com
The option can be used in multiple ways (like --cachesettings):
--integritysettings key=val
--integritysettings 'key1=val1 key2=val2'
--integritysettings key1=val1 --integritysettings key2=val2
Use with lvcreate or lvconvert when integrity is first enabled
to configure:
journal_sectors
journal_watermark
commit_time
bitmap_flush_interval
allow_discards
Use with lvchange to configure (only while inactive):
journal_watermark
commit_time
bitmap_flush_interval
allow_discards
lvchange --integritysettings "" clears any previously configured
settings, so dm-integrity will use its own defaults.
lvs -a -o integritysettings displays configured settings.
In case of different PV sizes in a VG, the lvm2 allocator falls short
to define extended segments resiliently asked for 100%FREE RaidLV extension
and a RAID distinct allocation check fails. Fix is to release a memory pool
on the resulting error path.
Until the lvm2 allocator gets enhanced (WIP) to do such complex (and other)
allocations proper, a workaround is to extend a RaidLV to any free space on
its already allocated PVs by defining those PVs on the lvextend command line
then iteratively run further such lvextend commands to extend it to its
final intended size. Mind, this may be a non-trivial extension interation.
The cmd struct is now required in many more functions, and
it's added as a function arg for most direct dev-cache function
calls. The cmd struct is added to struct device (dev->cmd) so
that it can be accessed in many other cases where dev-cache
functions are being called from places where getting the cmd
struct is too difficult.
vgchange -an vg is permitted when the vg lockspace
is not available, because LVs could still be active
for some reason, and they should be inactive when not
properly locked. In case lvmlockd was not running, or
the lockspace was not started, the command was
unnecessarily trying and failing to unlock every LV,
printing errors for every LV. We can skip this when
the lockspace is known to not be available.
In order to free SubLVs after a stripe removing reshape, lvconvert has
to be run without layout changes. Prevent a layout changing request
in case any such freed SubLVs exist and inform the user about the fact
requesting to release them first.
When PVs are created on LVs, remove the devices file entries
for the PVs when the LVs are removed. In general, the devices
file entries should be removed with lvmdevices --deldev when
the LVs are removed (lvremove is the equivalent of detaching
a device from the system when layering PVs on LVs.)
This change is effectively an automatic lvmdevices --deldev
command that is built into lvremove when the LV has a PV on it.
Shortens processing of 'lvcreate -L -V -T' command and
avoid deactivation and its activation with thin_check of the empty
created thin-pool that will be used for the new thin volume
made with a single lvcreate command.
When using message API for parsing VDO stats info, 0 was wrongly
used for fallback for trying the old sysfs API.
Switch to use ULLONG_MAX for values that could not have been obtained
through the message call.
Fixes lvdisplay info for freshly created VDO volume with 0 used data
blocks.
Fix/support creation and usage of the external origin
across thin-pools - so thin LV can use thin LV from
some other thin-pool as external origin (read-only).
When creating external origin via 'lvcreate --type thin'
add the validation for LV being usable as external origin
since certain LVs cannot be really used this way.
Also call this function early during lvcreate cmdline arg
validation se we do not need to do unecesary operation.
Function to recalc chunk_size according to dev hints needs to be
used after chunk_size is being set to thin pool segment - correct
this ordering mistake introduced in previous refactoring commit.
Previous patch that introduced support for thinpool with vdo
not correctly handled header size - as this part is not fully usable
yet. We are going to try to use the 0, but current state of code is not
yet compliant to this logic so keep vdo_header_size during conversion
and alos correctly pass through virtual_extents to vdo formating.
Add code to handle creation of thin-pool with VDO data backend
which can be seen as compressed deduplicated thin-pool.
To avoid need of changing to many internal APIs, pass the conversion
parameters for create thin-pool data volume via cmd_context.
Introduce struct vdo_convert_params {} to pass-in all the parameters
needed for the conversion of an LV to a vdopool + vdo LV.
Function convert_vdo_lv() is also able to create a new LV and swap
segments, so the passed in LV can be later on use for futher
conversion so this refactoring makes it ready for more enhanced
usage.
Introduce vdo_convert_params and use vdo_params from this structure
also with lvcreate_params.
Later we will use this for convertion of thin-pool data volume to VDO.
