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For raid1 use chunksize as bitmap-chunk specification.
Always enforce usage of bitmap - getting comparable outcome
as lvm2 raid support uses.
Add udev_wait after stopping md array - as in fact leg-device
are still in use by target even command has finished.
(mdadm --stop causes WATCH rule wakeup, and
ioctl(STOP_ARRAY) returns IMHO to early - it should finish
and fsync work on leg devices first).
Support parsing --chunksize option also when converting.
Now user can use cache pool created with i.e. 32K chunksize,
while in caching user can select 512K blocks.
Tool is supposed to validate cache metadata size is big enough
to support such chunk size. Otherwise error is shown.
When creating LV - in some case we change created segment type
(ATM for cache and snapshot) and we then manipulate with
lv segment according to 'lp' segtype.
Fix this by checking for proper type before accessing segment members.
This makes command like:
lvcreate --type cache-pool -L10 vg/cpool
lvcreate -H -L10 --cachesettings migtation_threshold=10000 vg/cpool
to pass since now tool correctly selects default cache policy.
Rather than doing repeated translations from name to
device when comparing args to existing PVs, do one
translation of the arg names and saving the device,
before checking existing PVs.
If there's an activation volume_filter, it might not be possible
to activate the rmeta LVs to wipe them. At least inherit any
LV tags from the parent LV while attempting this.
pvscan autoactivation has its own VG processing implementation,
so it can't properly handle things like foreign or shared VGs,
so make it ignore those VG types (or errors from them) as best
as possible.
Add a FIXME stating that pvscan autoactivation must really be
moved to the standard VG processing by calling process_each_vg
to do activation once the scanning / cache update is finished.
Checking for devices uses is_missing_pv() to check
if there is a device for the PV. is_missing_pv()
is based on the MISSING_PV flag, which does not
always correspond to !pv->dev. When using lvmetad,
a command like:
pvs --config 'devices/filter=["a|/dev/sdb|", "r|.*|"]'
will cause a number of PVs to have NULL pv->dev, but
not the MISSING_PV flag. So, NULL pv->dev needs to
also be checked.
Before executing modprobe for given module name, just check
if the module is not already present in /sys/module.
Useful when checking dm-cache-policy modules as we do not
having matching interface like for targets.
[0] fedora/~ # pvs --config 'devices/filter=["a|/dev/sda|", "r|.*|"]'
WARNING: Device for PV Qcxpcy-XgtP-UD3s-PmG0-qLyE-Z0ho-DYsxoz not found or rejected by a filter.
WARNING: Device for PV Qcxpcy-XgtP-UD3s-PmG0-qLyE-Z0ho-DYsxoz not found or rejected by a filter.
WARNING: Couldn't find device for segment belonging to fedora/root while checking used and assumed devices.
WARNING: Couldn't find device for segment belonging to fedora/swap while checking used and assumed devices.
PV VG Fmt Attr PSize PFree
/dev/sda lvm2 --- 128.00m 128.00m
[unknown] fedora lvm2 a-m 19.49g 0
Probably not worth mentioning "segments" here, just state that devices
for an LV can't be all found during the check - it's less mysterious for
user then:
[0] fedora/~ # pvs --config 'devices/filter=["a|/dev/sda|", "r|.*|"]'
WARNING: Device for PV Qcxpcy-XgtP-UD3s-PmG0-qLyE-Z0ho-DYsxoz not found or rejected by a filter.
WARNING: Device for PV Qcxpcy-XgtP-UD3s-PmG0-qLyE-Z0ho-DYsxoz not found or rejected by a filter.
WARNING: Couldn't find all devices for LV fedora/root while checking used and assumed devices.
WARNING: Couldn't find all devices for LV fedora/swap while checking used and assumed devices.
PV VG Fmt Attr PSize PFree
/dev/sda lvm2 --- 128.00m 128.00m
[unknown] fedora lvm2 a-m 19.49g 0
When checking assumed PVs against real devices used for LVs and if
there's no device assigned for an assumed PV (e.g. due to filters),
do log_warn instead of log_error and continue checking LV segments
and associated assumed PVs further, just like we do log_warn elsewhere
in this situation.
This way user will see the warning for each LV which couldn't be
checked completely against real PVs used. Before, we logged only
the very first occurence of missing device for an LV in a VG and we
returned from the function doing this check for all the LVs in VG
immediately which may be a bit misleading because it didn't tell
user about all the other LVs and whether they could be checked
or not.
For example, we have this setup:
[0] fedora/~ # pvs
PV VG Fmt Attr PSize PFree
/dev/sda lvm2 --- 128.00m 128.00m
/dev/vda2 fedora lvm2 a-- 19.49g 0
[0] fedora/~ # lvs -o+devices
LV VG Attr LSize Devices
root fedora -wi-ao---- 19.00g /dev/vda2(0)
swap fedora -wi-ao---- 500.00m /dev/vda2(4864)
Before this patch (only the very first LV in a VG is logged to have a
problem while checking used and assumed devices):
[0] fedora/~ # pvs --config 'devices/filter=["a|/dev/sda|", "r|.*|"]'
WARNING: Device for PV Qcxpcy-XgtP-UD3s-PmG0-qLyE-Z0ho-DYsxoz not found or rejected by a filter.
WARNING: Device for PV Qcxpcy-XgtP-UD3s-PmG0-qLyE-Z0ho-DYsxoz not found or rejected by a filter.
Couldn't find device for segment belonging to fedora/root while checking used and assumed devices.
PV VG Fmt Attr PSize PFree
/dev/sda lvm2 --- 128.00m 128.00m
[unknown] fedora lvm2 a-m 19.49g 0
With this patch applied (all LVs where we hit problem while checking
used and assumed devices are logged and it's warning, not error):
[0] fedora/~ # pvs --config 'devices/filter=["a|/dev/sda|", "r|.*|"]'
WARNING: Device for PV Qcxpcy-XgtP-UD3s-PmG0-qLyE-Z0ho-DYsxoz not found or rejected by a filter.
WARNING: Device for PV Qcxpcy-XgtP-UD3s-PmG0-qLyE-Z0ho-DYsxoz not found or rejected by a filter.
WARNING: Couldn't find device for segment belonging to fedora/root while checking used and assumed devices.
WARNING: Couldn't find device for segment belonging to fedora/swap while checking used and assumed devices.
PV VG Fmt Attr PSize PFree
/dev/sda lvm2 --- 128.00m 128.00m
[unknown] fedora lvm2 a-m 19.49g 0