Difference between revisions of "Universally unique identifier (UUID)"

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* [[Filesystem]]
 
* [[Filesystem]]
 
* [[PV]]: <code>[[pvcreate]]</code>, <code>[[pvchange]]</code>
 
* [[PV]]: <code>[[pvcreate]]</code>, <code>[[pvchange]]</code>
−
 
+
* <code>libuuid</code> provided by <code>[[util-linux]]</code> package
  
 
[[Category:Linux]]
 
[[Category:Linux]]

Revision as of 11:35, 16 December 2019

Universally unique identifier (UUID) 

mkfs.ext4 /dev/vg01/lv01
mke2fs 1.44.1 (24-Mar-2018)
Creating filesystem with 2441850880 4k blocks and 305233920 inodes
Filesystem UUID: e6742357-a181-4b82-837f-9a01f3e52568
Superblock backups stored on blocks:
	32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
	4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
	102400000, 214990848, 512000000, 550731776, 644972544, 1934917632

Allocating group tables: done
Writing inode tables: done
Creating journal (262144 blocks): done
Writing superblocks and filesystem accounting information: done




pvcreate --uuid "FmGRh3-zhok-iVI8-7qTD-S5BI-MAEN-NYM5Sk" --restorefile /etc/lvm/archive/VG_00050.vg /dev/sdh1
  Physical volume "/dev/sdh1" successfully created


pvchange --uuid Generate new random UUID for specified PVs.


See also

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