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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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| .. | ||
| bcache-utils.c | ||
| bcache.c | ||
| bcache.h | ||
| dev_util.c | ||
| dev-cache.c | ||
| dev-cache.h | ||
| dev-dasd.c | ||
| dev-ext-udev-constants.h | ||
| dev-ext.c | ||
| dev-io.c | ||
| dev-luks.c | ||
| dev-lvm1-pool.c | ||
| dev-md.c | ||
| dev-mpath.c | ||
| dev-swap.c | ||
| dev-type.c | ||
| dev-type.h | ||
| device_id.c | ||
| device_id.h | ||
| device-types.h | ||
| device.h | ||
| filesystem.c | ||
| filesystem.h | ||
| online.c | ||
| online.h | ||
| parse_vpd.c | ||