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Tool will use internal activation of unused cache pool to
clear metadata area before next use of cache-pool.
So allow to deactivation unused pool in case some error
case happend and we were not able to deactivation pool
right after metadata wipe.
Add API call to calculate extents from percentage value.
Size is based in DM_PERCENT_1 units.
(Supporting decimal point number).
This commit is preparing functionality for more global
usage of % with i.e. --size option.
New size_mb_arg_with_percent is able to read size_mb_arg
but also it's able to read % values.
Percent parsing is share with int_arg_with_sign_and_percent.
If root has locales with different decimal point then '.'
(i.e. Czech with ',') lets be tolerant and retry with
"C" locales in the case '.' is found during parse of number.
Locales are then restored back.
Support compile type configurable defaults for creation
of sparse volumes.
By default now create 'thin-pools' for sparse volumes.
Use the global/sparse_segtype_default to switch back to old
snapshots if needed.
Apply the same compile logic for newly introduces mirror/raid1 options.
Some values are reserved for special purpose like 'undefined', 'unmanaged' etc.
When using >, <, >= and < comparison operators where the range is considered,
do not include reserved values as proper values in this range which
would otherwise result in not so obvious criteria match (as the reserved value is
actually transparent for the user). It's incorrect.
Example scenario:
$ vgs -o vg_name,vg_mda_copies vg1 vg2
VG #VMdaCps
vg1 1
vg2 unmanaged
The "unmanaged" is actually mapped onto reserved value
18446744073709551615 (2^64 - 1) internally.
Such reseved value is already caught on selection criteria input
properly:
$ vgs -o name,vg_mda_copies vg1 vg2 -S 'vg_mda_copies=18446744073709551615'
Numeric value 18446744073709551615 found in selection is reserved.
However, we still need to fix situaton where the reserved value may be
included in resulting range:
Before this patch:
$ vgs -o vg_name,vg_mda_copies vg1 vg2 -S 'vg_mda_copies >= 1'
VG #VMdaCps
vg1 1
vg2 unmanaged
With this patch applied:
$ vgs -o vg_name,vg_mda_copies vg1 vg2 -S 'vg_mda_copies >= 1'
VG #VMdaCps
vg1 1
From the examples above, we can see that without this patch applied,
the vg_mda_copies >= 1 also matched the reserved value 18446744073709551615
(which is represented by the "unamanged" string on report). When
applying the operators, such values must be skipped! They're meant to
be matched only against their string representation only, e.g.:
$ vgs -o name,vg_mda_copies vg1 vg2 -S 'vg_mda_copies=unmanaged'
VG #VMdaCps
vg2 unmanaged
...or any synonyms:
$ vgs -o name,vg_mda_copies vg1 vg2 -S 'vg_mda_copies=undefined'
VG #VMdaCps
vg2 unmanaged
Unlike with thin-pool - with cache we support all args also
directly when create cache volume.
So the result of 'separate' cache-pool creation and setting its
options should give same result as specifying those args
during cache creation.
Cache-pool values are used as defaults if the params are
not specified with cache creation.
Move code for creation of thin volume into a single place
out of lv_extend(). This allows to drop extra pool arg
for alloc_lv_segment() && lv_extend() and makes code
more easier to read and follow.
When we create volumes with chunk size bigger then extent size
we try to round up to some nearest chunk boundary.
Until now we did this for thins - use same logic for
cache volumes.
Fixed syntax parsing means that some commands that used to work are now
failing. Particullary this case:
$ invalid lvcreate -l1 --type thin vg/pool
> Needs to fail becase thin type LV needs --virtualsize
$ invalid lvcreate --type snapshot vg/lv1
> Needs to fail because old-snapshot segment type needs --size
Some reported error messages have been also updated.
