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Introduce a new lock for the flight recorder, so that we can dump it when
a command is block waiting for lvm to complete. Also in all paths we will
addthe metadata to the flight recorder before it's done, so we will have
it when a command hangs and we dump the flight recorder. Add the missing
bits after the command has finished.
Cleaned up the output too.
We put this in to test one of the paths in the damon, but unfortunately
if we hit the race condition where the job actually is done we will try
to call j.Wait(1) after the remove. This fails with:
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.UnknownMethod:
Method "Wait" with signature "i" on interface "com.redhat.lvmdbus1.Job"
doesn't exist
Which is caused by the dbus object no longer existing. We could handle
this, but the issue is we no longer have the ability to get the result to
return, they have been lost.
A better solution would be to write a specific unit test to force this code
path and handle all the possible outcomes.
These files are automatically cleared on reboot given
that /run is tmpfs, and that remains the primary way
of clearing online files.
But, if there's extreme use of vgcreate+pvscan+vgremove
between reboots, then removing online files in vgremove
will limit the number of unused online files using space
in /run.
The new option "--fs String" for lvresize/lvreduce/lvextend
controls the handling of file systems before/after resizing
the LV. --resizefs is the same as --fs resize.
The new option "--fsmode String" can be used to control
mounting and unmounting of the fs during resizing.
Possible --fs values:
checksize
Only applies to reducing size; does nothing for extend.
Check the fs size and reduce the LV if the fs is not using
the affected space, i.e. the fs does not need to be shrunk.
Fail the command without reducing the fs or LV if the fs is
using the affected space.
resize
Resize the fs using the fs-specific resize command.
This may include mounting, unmounting, or running fsck.
See --fsmode to control mounting behavior, and --nofsck to
disable fsck.
resize_fsadm
Use the old method of calling fsadm to handle the fs
(deprecated.) Warning: this option does not prevent lvreduce
from destroying file systems that are unmounted (or mounted
if prompts are skipped.)
ignore
Resize the LV without checking for or handling a file system.
Warning: using ignore when reducing the LV size may destroy the
file system.
Possible --fsmode values:
manage
Mount or unmount the fs as needed to resize the fs,
and attempt to restore the original mount state at the end.
nochange
Do not mount or unmount the fs. If mounting or unmounting
is required to resize the fs, then do not resize the fs or
the LV and fail the command.
offline
Unmount the fs if it is mounted, and resize the fs while it
is unmounted. If mounting is required to resize the fs,
then do not resize the fs or the LV and fail the command.
Notes on lvreduce:
When no --fs or --resizefs option is specified:
. lvextend default behavior is fs ignore.
. lvreduce default behavior is fs checksize
(includes activating the LV.)
With the exception of --fs resize_fsadm|ignore, lvreduce requires
the recent libblkid fields FSLASTBLOCK and FSBLOCKSIZE.
FSLASTBLOCK*FSBLOCKSIZE is the last byte used by the fs on the LV,
which determines if reducing the fs is necessary.
This test could only be run when user passes LVM_TEST_DEVDIR=/dev
as it requires and expects actions to be going in this dir, skip
otherwise.
Also 'extend_filter' manages multiple args in on lvm.conf update.
mdraid has some breakage - so 5.19 is crashing
(possibly even some more older version - that can be added as well)
Test seems to pass with 6.0-rc kernel.
Add new define 'newline' for use in 'foreach()'
Add new $(SHOW) for makefile printing output
Add 'make print-VAR' for easier debugging of Makefiles' variables.
Fix lv_active to be of BIN type instead of STR. This allows lv_active to
follow the report/binary_values_as_numeric setting as well as --binary
cmd line switch. Also, it makes it possible to use -S|--select with
either textual or numeric representation of the value, like 'lvs -S
active=active' but also 'lvs -S active=1'.
Take the devices file lock before creating a new devices file.
(Was missed by the change to preemptively create the devices
file prior to setup_devices(), which was done to improve the
error path.)
When using --all, if one VG is skipped, continue adding
other VGs, and do not return an error from the command
if some VGs are added. (A VG is skipped if it's missing PVs.)
If the command fails during devices file setup or device
scanning, then remove the devices file if it has been
newly created by the command, and exit with an error.
If devices from a named VG are not imported (e.g. the
VG is missing devices), then remove the devices file if
it has been newly created by the command, and exit with
an error.
If --all VGs are being imported, and no devices are found
to include in the devices file, then remove the devices
file if it has been newly created by the command, and
exit with an error.
Names matching internal code layout.
Functionc in thin_manip.c uses thin_pool in its name.
Keep 'pool' only for function working for both cache and thin pools.
No change of functionality.
Certain args can't be used in lvm shell ("interactive mode") because
they are not supported there. Add ARG_NONINTERACTIVE flag to mark
such args and error out if we're in interactive mode and at the same
time we detect use of such argument.
Currently, this is the case for --reportformat arg - we don't support
changing the format per command in lvm shell. The whole shell is running
under a reportformat chosen at shell's start.
Commit 73ec3c954b added a way to print
only a part of the report string (repstr) to support decoding individual
string list items out of repstr.
The repstr is normally printed through _safe_repstr_output so that any
JSON_QUOTE character ('"') found within the repstr is escaped to not
interfere with value quoting in JSON format.
However, the commit 73ec3c954b missed
checking the 'len' argument passed to _safe_repstr_output function when
adding the rest of the repstr after all previous JSON_QUOTE characters
were escaped (when calling the last dm_pool_grow_object). When 'len'
is 0, we need to calculate the 'len' ourselves in the function by
simply calling strlen. This is because 'len' is passed to the function
only if we're taking a part of repstr, not as a whole.
If we failed or logged anything before we actually execute given command
in lvm shell, we couldn't report the log using lastlog command after.
This patch adds specific 'pre-cmd' log report object type to identify
such log messages and enables lastlog to report even this log.
pvcreate with --uuid would segfault if a devices file entry matched
the specified pvid, but the devices file entry had no device_id, which
could happen if the entry has a devname idtype.
When the volume size is extended, there is no need to flush
IO operations (nothing can be targeting new space yet).
VDO target is supported as target that can safely work with
this condition.
Such support is also needed, when extending VDOPOOL size
while the pool is reaching its capacity - since this allows
to continue working without reaching 'out-of-space' condition
due to flushing of all in flight IO.
