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mirror of git://sourceware.org/git/lvm2.git synced 2024-12-21 13:34:40 +03:00
lvm2/lib/config
David Teigland e59027e4f7 devices file: back up each version
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.)
2024-02-15 11:40:37 -06:00
..
config_settings.h devices file: back up each version 2024-02-15 11:40:37 -06:00
config.c debug: add backtraces 2023-06-23 18:08:03 +02:00
config.h lvmconfig: add --valuesonly option 2022-08-17 10:47:24 +02:00
defaults.h devices file: back up each version 2024-02-15 11:40:37 -06:00