Difference between revisions of "Universally unique identifier (UUID)"
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[[wikipedia:Universally_unique_identifier|Universally unique identifier (UUID)]] | [[wikipedia:Universally_unique_identifier|Universally unique identifier (UUID)]] | ||
| − | * Filesystem UUID | + | * [[Filesystem]] UUID |
* Block device UUID: <code>[[lsblk]] -io KNAME,TYPE,SIZE,MODEL,UUID</code> | * Block device UUID: <code>[[lsblk]] -io KNAME,TYPE,SIZE,MODEL,UUID</code> | ||
* [[LVM]] [[PV]] UUID: <code>[[pvdisplay]]</code> | * [[LVM]] [[PV]] UUID: <code>[[pvdisplay]]</code> | ||
| + | |||
| + | == EXT4 filesystem == | ||
<pre> | <pre> | ||
mkfs.ext4 /dev/vg01/lv01 | mkfs.ext4 /dev/vg01/lv01 | ||
Revision as of 11:54, 16 December 2019
Universally unique identifier (UUID)
- Filesystem UUID
- Block device UUID:
lsblk -io KNAME,TYPE,SIZE,MODEL,UUID - LVM PV UUID:
pvdisplay
EXT4 filesystem
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
LVM
--- Physical volume --- PV Name /dev/sdc3 VG Name rhvh PV Size <7.28 TiB / not usable 3.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 1907390 Free PE 25600 Allocated PE 1881790 PV UUID Tk3lEU-NzHl-miXe-bKNk-wcNN-vvou-nM0IGD
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
- Filesystem
- PV:
pvcreate,pvchange libuuidprovided byutil-linuxpackage
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