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Use segment flags to avoid zeroing of cache, cache pool
snapshot and thin pool segments.
We never want to zero these segment types.
Note:
Snapshot COW and Cache origin are created as stripes
thus are then properly zeroed.
Refactor lvcreate code.
Prefer to use arg_outside_list_is_set() so we get automatic 'white-list'
validation of supported options with different segment types.
Drop used lp->cache, lp->cache and use seg_is_cache(), seg_is_thin()
Draw clear border where is the last moment we could change create
segment type.
When segment type is given with --type - do not allow it to be changed
later.
Put together tests related to individual segment types.
Finish cache conversion at proper part of lv_manip code after
the vg_metadata are written - so we could correcly clean-up created
stripe LV for cache volume.
Move test for size of new LV names in front before
any creation of LV.
Properly check striped segtype kernel presence,
since passed 'segtype' is already tested.
Keep deactivation error path local to wiping part of the function.
Create metadata with temporary flag (it's activated, zeroed
and deactivated).
Introduce new option to specify pool data size.
This will be user to create i.e. cache & cachepool at once.
And possible for thin external origin snapshot.
This is only very basic patch to enable options, the
real working code will come later.
We want to print smarter warning message only when
the zeroing was not provided on the first zeroable segment
of newly created LV.
Put warning within _should_wipe_lv function to avoid reevaluation
of same conditions twice.
Hide creation of temporary LVs and print them only in verbose mode.
e.g. hides confusing message about creation of _pmspare
device during creation of pool.
Use new libdm macro DM_LIST_HEAD_INIT().
Embeded 'free' segment type (so it's not needed in the list)
Drop assignments of 0,NULL since they are defaults.
Ask for lock the proper LV.
Use the top-most LV to query for locally exclusive lock.
The rest of operations are then using 'lv_info()'
TODO:
Check all devices are reloaded from proper level.
In general any query on lv_is_active is supposed to be running
ona lv_lock_holder() volume.
Now we reference segment name via lvseg_name() and
we can drop default implementation and leave its
function pointer to be NULL.
Default give us 'return seg->segtype->name'.
Instead of segtype->ops->name() introduce lvseg_name().
This also allows us to leave name() function 'empty' for default
return of segtype->name.
TODO: add functions for rest of ops->
There was a bug in value and their synonym definition for these two fields
causing selections on these fields to not work correctly - nothing matched
against vg/lv_permissions fields even if selection criteria should have
matched.
Scenario:
$ lvs -o name,lv_permissions vg
LV LPerms
lvol0 read-only
lvol1 writeable
Before this patch:
$ lvs -o name,lv_permissions vg -S 'permissions=read-only'
(blank)
$ lvs -o name,lv_permissions vg -S 'permissions=writeable
(blank)
With this patch applied:
$ lvs -o name,lv_permissions vg -S 'permissions=read-only'
LV LPerms
lvol0 read-only
$ lvs -o name,lv_permissions vg -S 'permissions=writeable'
LV LPerms
lvol1 writeable
Also synonyms match correctly now:
$ lvs -o name,lv_permissions vg -S 'permissions=rw'
LV LPerms
lvol1 writeable
We can't hang on blocked or suspended devices when the scan is done
for lvmetad update - when the device gets unblocked or resumed, there's
always CHANGE event generated which will fire the udev rule to run
extra pvscan --cache for that device which makes sure that lvmetad
is up-to-date.
When we are given an existing LV name - it needs to be allowed
to pass in even restricted name as the LV could have existed
long before we introduced some new restriction on prefix/suffix.i
Fix the regression on name limits and drop restriction to be applied
on any existing LVs - only the new created LV names have to be
complient with current name restrictions.
FIXME: we are currently using restricted names incorrectly in few
other places - device_is_usable() skips restricted names,
and udev flags are also incorrectly set for restricted names
so these LVs are not getting links properly.
find_pv_in_vg fn iterates over the list of PVs covered by the VG and
each PV's pvl->pv->dev is compared with device acquired from device
cache. However, in case pvl->pv->dev is NULL as well as device cache
returns NULL (e.g. when device is filtered), we'll get incorrect match
and the code calling find_pv_in_vg uses incorrect PV (as it thinks
it's the exact PV with the pv_name). The INTERNAL_ERROR covers this
situation and errors out immediately.
The warnings arg was used to enable logging of warnings
when reading a PV. This arg is turned into a set of flags
with the WARN_PV_READ flag matching the existing behavior.
A new flag WARN_INCONSISTENT is added that will cause
vg_read_internal() to log the "VG is not consistent"
warning so the various callers do not need to log
this warning themselves.
A new vg_read flag READ_WARN_INCONSISTENT is used from
reporting to enable the WARN_INCONSISTENT flag in
vg_read_internal.
[Committed by agk with cosmetic changes and tweaks.]
Process PVs by iterating through VGs, then iterating through
devices if the command needs to process non-PV devices.
The process_single function can always use the VG and PV args.
[Committed by agk with cosmetic changes and tweaks.]
Introduce pool function for validation of chunk size.
It's good idea to be able to reject invalid chunk size
when entered on command line before we open VG.
