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When 'lvresize -r' is used to resize the volume, it's valid to
resize even to the same size of an LV, as the command then runs
fs-resize utility to eventually upsize the fs to the current
volume size.
Return code of such command then reflects the return value
of this fs-resize tool.
This fixes the regression introduced when the support
for option --fs was added (2.03.17).
Use proper function names in annotation
There are no fuction named print_common_options_cmd()
and print_common_options_lvm(). So, rename them to the
real function named print_usage_common_cmd() and
print_usage_common_lvm().
Signed-off-by: YunJian Long
Tricky one - as the pipe exit codes may result into whole
test failure depending on how quick/slow command exits
are within pipeline.
So get the len without piping.
Replace usage of dm_hash with radix_tree to quickly find LV name
with a vg and also index PV names with set of available PVs.
This PV index is only needed during the import, but instead
of passing 'radix_tree *' everywhere, just keep this within
a VG struct as well and once the parsing is finished, release
this PV index radix_tree.
This also makes it easier to replace this structure
in the future if needed.
lv_set_name now uses radix_tree remove+insert to keep lv_names
tree in-sync and usable for find_lv queries.
Enhance usage with uniq_insert and also try to better
utilize CPU cache and do a smaller loop for individual
hashing of lvname and separately lvid.
Also correcting usage of 'continue' within validation of
historical names as it should report as much errors
as it can within a loop.
When using radix_tree to identify duplicate entries we may
avoid to call an extra 'lookup()' prior the insert() operation
add radix_tree_uniq_insert/_ptr() that is able to report -1 if
there was already set a value for the given key.
Avoid finding problems in vg_validate when restoring
invalid VG metadata as that would lead to internal error.
i.e. adding unsupported METADATA_FLAG to zero segtype
can trigger such thing.
Previous update needed to add handling segtype within flag.c
which somewhat breaks API separition and also had bug in hanlding
actual flags.
So instead keep segtype code in _read_segtype_and_lvflags() within
import_vsn1.c and handle purly flags in read_lvflags() from const
string.
Instead of duplicating whole segtype string with flags and
using 2 calls read_segtype_lvflags() + get_segtype_from_string(),
merge the functionality into a single read_segtype_and_lvflags().
This allows to make only a local string copy (no allocs) and eventually
to not copy segtype string at all, when there are no flags.
As the 'emit_to_buffer' uses relatively complex
vsnprintf() call inside, try to reduce number
of unnecessary calls and try replace some more
complex string build with a single call instead.
With existing code, the cache was working only to the 2nd. locking.
So i.e. when 'lvs' scans system with more then one VG, the caching
was effectively not working.
Update the code, so the label invalidate code is able to update DM
cache - so whenever we take a new lock - we will refresh the cache.
TODO: the refresh ATM does a very simple compare of old a new list
of cached DM device, and with the first spotted difference, it just
fallback to the full rebuild of DM cache - with large amount of active
devices this might not the most efficient way....
