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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.) |
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| .. | ||
| activate | ||
| cache | ||
| cache_segtype | ||
| commands | ||
| config | ||
| datastruct | ||
| device | ||
| display | ||
| error | ||
| filters | ||
| format_text | ||
| freeseg | ||
| integrity | ||
| label | ||
| locking | ||
| log | ||
| lvmpolld | ||
| metadata | ||
| mirror | ||
| misc | ||
| mm | ||
| notify | ||
| properties | ||
| raid | ||
| report | ||
| snapshot | ||
| striped | ||
| thin | ||
| unknown | ||
| uuid | ||
| vdo | ||
| writecache | ||
| zero | ||
| Makefile.in | ||