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Relocate generated configure.h and lvm-version.h outside
of compilable .c source tree.
The reason is behind - when compiling in builddir != srcdir
the generated file in lib/misc/configure.h was used for all compiled
source file except ones located in lib/misc dir - those would have used
configure.h file located in this dir - if there have existed one (i.e.
from some other build)
This problem was only visible, when srcdir == buildir was used before
trying to use srcdri != builddir (as configure.h appeared then in
srcdir).
The histogram changes adds a new error path to dm_stats_create().
Make sure that the dm_stats handle is properly destroyed if we fail
to create the histogram pool and check for failures setting the
program_id.
Since we are growing an object in the histogram pool the return
value of dm_pool_grow_object() must be checked and error paths need
to abandon the object before returning.
Undo the part of the recent EREMOVED change which
automatically stopped the lockspace for a remotely
removed VG. It didn't always work (would not work
when lvb content was rebuilt in the dlm). This will
be handled better when the lvb content is controlled
more strictly.
As part of fix that came with cf700151eb,
I forgot to add the check whether the result of stat was successful or
not. This bug caused uninitialized buffer to be used for entries
from .cache file which are no longer valid.
This bug may have caused these uninitialized values to be used further,
for example (see the unreal (2567,590944) representing major:minor
pair):
$ pvs
/dev/abc: stat failed: No such file or directory
Path /dev/abc no longer valid for device(2567,590944)
PV VG Fmt Attr PSize PFree
/dev/mapper/test lvm2 --- 104.00m 104.00m
/dev/vda2 rhel lvm2 a-- 9.51g 0
Older versions of gcc aren't able to track the assignments of
local variables as well as the latest versions leading to spurious
warnings like:
libdm-stats.c:2183: warning: "len" may be used uninitialized in this
function
libdm-stats.c:2177: warning: "minwidth" may be used uninitialized in
this function
Both of these variables are in fact assigned in all possible paths
through the function and later compilers do not produce these
warnings.
There's no reason to not initialize these variables though and
it makes the function slightly easier to follow.
Also fix one use of 'unsigned' for a nr_bins value.
Replace the histogram stats subcommand with a --histogram switch
to enable histogram related fields for both list and report output.
To avoid overloading the existing --histogram rename it to --bounds:
this is also a better description of the option.
Remove the optimization/shortcut for starting the dlm global
lockspace when it was already running.
Reenable automatically starting the dlm global lockspace
when a command attempts to use it and it's not yet started.
This had become disabled at some point.
Since we may easily get blocked when checking for percentage
of thin-pool - do not flush and just show current values.
This avoids holding VG locked when pool is overfilled.
Try to detect thin-pool which my block lvm2 command from furher
processing (i.e. lvextend).
Check if pool is read-only or out-of-space and in this case thins
will skipped from being scanned (so user may miss some PVs located
on thin volumes).
Fix regression introduced with commit:
2fc126b00d
This commit has moved pv_min_size() test in front
of device_is_usable(). However pv_min_size needs to open device,
so it may have actually get blocked.
So restore the original order and first validate
dm device to be usable for open.
It's worth to note that such check is not 'race-free',
but it usually eliminates 99.99% of problems ;).
Print [source:handler] in filters' debug messages only if external
device info source other than "none" is used.
$ lvmconfig --type full devices/external_device_info_source
external_device_info_source="none
Before this patch (from the -vvvv log):
filters/filter-usable.c:47 /dev/mapper/test: Skipping: Too small to hold a PV [none:(nil)]
filters/filter-md.c:33 /dev/sdb: Skipping md component device [none:(nil)]
filters/filter-partitioned.c:25 /dev/vda: Skipping: Partition table signature found [none:(nil)]
With this patch applied:
filters/filter-usable.c:44 /dev/mapper/test: Skipping: Too small to hold a PV
filters/filter-md.c:35 /dev/sdb: Skipping md component device
filters/filter-partitioned.c:27 /dev/vda: Skipping: Partition table signature found
librt doesn't have a pkgconfig file so use Libs.private: -lrt instead
to declare the dependency directly.
The same applies for -lm which is also used and which hasn't been
defined in the devmapper.pc file yet.
Make sure that correct 'dmstats create' messages are shown for all
examples and fix LV examples to use correct dmsetup output name
format (vg/lv -> vg-lv).
Improve the names and labels of stats reports columns, ensure that
the minimum field widths allow unambiguos labels to be shown and
update the man page descriptions of these fields.
Add support to dmstats to create and report histograms.
Add a --histogram switch to 'create' that accepts a string
description of bin boundaries and DR_STATS and DR_STATS_META fields
to report bin configuration and absolute and relative histogram
values:
hist_bins
hist_bounds
hist_ranges
hist_count
hist_count_bounds
hist_count_ranges
hist_percent
hist_percent_bounds
hist_percent_ranges
A new 'histogram' subcommand displays a report that emphasizes
histogram data as either counters or percentage values.
