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Here we actually need to slowdown only $dev2 - since repair operation
is only reading data from this device and compares it with origin $dev1,
and if they match there is no write...
If lvm.conf has use_devicesfile=0 and /etc/lvm/device/system.devices
exists, then rename it to system.devices-unused.YYYYMMDD.HHMMSS.
This prevents an old, incorrect system.devices from being used in
the future if lvm.conf is changed to use_devicesfile=1.
Create backup copies of system.devices in /etc/lvm/devices/backup
named system.devices-YYYYMMDD.HHMMSS.NNNN. NNNN is the version
counter from the file.
Each time that an lvm command writes a new system.devices file,
it also writes the same file in the backup directory.
A new comment line is added to system.devices with HASH=<num>
where <num> is a crc calculated from the uncommented lines in
system.devices. This lets lvm detect if the file has been
modified outside of lvm itself.
If system.devices is edited directly, the next time a command
reads the file, the crc will not match the HASH value. The
command will then rewrite system.devices with the correct HASH
value, and create a backup reflecting the edits.
A default limit of 50 backup files is kept, configurable by
lvm.conf devicesfile_backup_limit (set to 0 to disable backups.)
- add new comparison between old and new entries, and use this
as the basis for new dedicated output for check and update
- add new --refresh option to search for missing PVIDs on all
devices, and possibly update the device ID
- internally, only use the term "refresh" for cases where a
new device ID may be found and assigned for a missing PVID
It looks like there is some kernel bug/limitation
that may cause invalid table load processing:
dmsetup load LVMTEST-LV1
device-mapper: reload ioctl on LVMTEST-LV1 failed: Invalid argument
md/raid:mdX: reshape_position too early for auto-recovery - aborting.
md: pers->run() failed ...
device-mapper: table: 253:38: raid: Failed to run raid array (-EINVAL)
device-mapper: ioctl: error adding target to table
However ATM there is not much we can do then make delays bigger.
TODO: fixing md core...
Extend the test a bit futher so we can keep logic of resize
working similarly well for older and newer systems.
Test uses new 'aux have_fsinfo'function to regnize compiled
version of lvm.
Fix a bug in _stats_set_aux() that causes bogus data to appear
in the 'userdata' field of stats reports when previously grouped
regions are ungrouped:
/var/tmp/File With Spaces: Created new group with 1 region(s) as group ID 0.
Removed group ID 0 on fedora-root
Name GrpID RgID ObjType RgStart RgSize #Areas ArSize ProgID UserData
fedora-root - 0 region 6.39g 100.00m 1 100.00m dmstats #-
^^
This is the aux_data separator character followed by empty user data.
The _stats_set_aux() function should only emit the separator if
there is a valid group descriptor for the region.
Search for a PV on other devices if it's a devname entry
and the name doesn't exist on the system. This restores
code that should not have been removed in commit 1901a47df
"device_id: fix conditions for device_ids_refresh"
throtling mirror device is becoming useless with faster CPUS,
as way to many data can be transferred before throttling steps-in.
So prefer using dm-delay for test and keep throttling as fallback.
Detection of how the command is supposed to behave actually depends on
the configure.h compilation and whether binary is compiled with
HAVE_BLKID_SUBLKS_FSINFO.
This makes it somewhat complicated in a way how to recognize which
behavior is expected.
Currently we can eventually recognize by checking error output
of some 'random' lvresize command and see if the --fs checksize is
actually recognized and rejected. If this changes - test needs
to be updated.
After umout we may race with system udevd rule - so
just retry once again after 1s sleep - that should be
enough - otherwise we would need some loop here...
Multi-line echo command are problemat across variety of bash version
and may have produce shorter results.
Convert to stable heredoc string with 'tab' skipping <<- for better
formating.
If the system changes, locate PVs that appear on different devices,
and update the device IDs in the devices file. A system change is
detected by saving the DMI product_uuid or hostname in the devices
file, and comparing it to the current system value. If a root PV
is restored or copied to a new system with different devices, then
the product_uuid or hostname should change, and trigger lvm to
locate PVIDs from system.devices on new devices.
