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DM tree keeps track of created device while preloading a device tree.
When fail occures during such preload, it will now try to remove
all created and preloaded device. This makes it easier to maintain
stacking of device, since we do not need to check in-depth for
existance of all possible created devices during the failure.
LVM2 is distributed under GPLv2 only. The readline library changed its
license long ago to GPLv3. Given that those licenses are incompatible
and you follow the FSF in their interpretation that dynamically linking
creates a derivative work, distributing LVM2 linked against a current
readline version might be legally problematic.
Add support for the BSD licensed editline library as an alternative for
readline.
Link: https://thrysoee.dk/editline
Switch remaining zero sized struct to flexible arrays to be C99
complient.
These simple rules should apply:
- The incomplete array type must be the last element within the structure.
- There cannot be an array of structures that contain a flexible array member.
- Structures that contain a flexible array member cannot be used as a member of another structure.
- The structure must contain at least one named member in addition to the flexible array member.
Although some of the code pieces should be still improved.
When devices are created - we were not giving meaning error messages
when the failure happened on 'reload' part of creation.
With this patch we are now able to report both name and major:minor.
Enhancment is most visible with 'crypto' devices,
which are using 'secure' memory erase bit.
Adds support for the DM_GET_TARGET_VERSION to dmsetup.
It introduces a new comman "target-version" that will accept list
of targets and print their version.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Analogous to the case of a device with no regions, it is not an
error to attempt to list the stats groups on a device that has no
configured groups: just return success and continue.
Udev debugging is a bit tricky, so to more easily pair cookie ID,
which is the lowest 16 bit - print cookie as hexa number.
This simplify pairing of processed cookies while the 'higher bit flags'
are changed for the same cookie.
Kernels <2.6.27 don't have /sys/dev dir - add code for looking
out device name via longre seach in /sys/block
This makes commands like 'dmsetup dep -o blkdevname' working.
Fix versioning for updated symbols dm_stats_create_region
and dm_stats_create_region.
Only the latest symbol should have global entry.
Since I'm not sure what is currenlty the best option for
old symbols - we added support for easy commenting of them
(so we do not lose information when the symbol appeared
for the first time.)
Note: some old already deleted symbols should have been
restored as comments.
Recent kernel version from kernel commit:
de7180ff908b2bc0342e832dbdaa9a5f1ecaa33a
started to report in cache status line new flag:
no_discard_passdown
Whenever lvm spots unknown status it reports:
Unknown feature in status:
So add reconginzing this feature flag and also report this with
'lvs -o+kernel_discards'
When no_discard_passdown is found in status 'nopassdown' gets reported
for this field (roughly matching what we report for thin-pools).
lvm2 till version 2.02.169 (commit 78d004efa8)
was printing invalid creation_time argument into metadata on 32bit arch.
However with commit ba9820b142 we started
to properly validate all input numbers and thus we refused to accept
invalid metadata with 'garbage' string - but this results in the
situation where metadata produced on older lvm2 on 32 bit architecture
will become unreadable after upgrade.
To fix this case - extend libdm parser in a way, that whenever we
find error integer value, we also check if the parsed value is not for
creation_time node and in this case we let the metadata pass through
with made-up date 2018-05-24 (release date of 2.02.169).
Use the correct loop variable within the loop, instead of reusing the
initial value. Table lines after the first don't get terminated in
the right place.
Signed-off-by: Kurt Garloff <kurt@garloff.de>
Since configure.h is a generated header and it's missing traditional
ifdefs preambule - it can be included & parsed multiple times.
Normally compiler is fine when defines have same value and there is
no warning - yet we don't need to parse this several times
and by adding -include directive we can ensure every file
in the package is rightly compile with configure.h as the
first header file.
Ensure configure.h is always 1st. included header.
Maybe we could eventually introduce gcc -include option, but for now
this better uses dependency tracking.
Also move _REENTRANT and _GNU_SOURCE into configure.h so it
doesn't need to be present in various source files.
This ensures consistent compilation of headers like stdio.h since
it may produce different declaration.
Just for case ensure compiler is not able to optimize
memset() away for resources that are released.
This idea of using memory barrier is taken from openssl.
Other options would be to check for 'explicit_bzero' function.
