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| − | [[wikipedia:Universally_unique_identifier|Universally unique identifier (UUID)]]
| + | TODO |
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| − | * [[Filesystem]] UUID
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| − | * Block device UUID: <code>[[lsblk]] -io KNAME,TYPE,SIZE,MODEL,UUID</code>
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| − | * [[LVM]] [[PV]] UUID: <code>[[pvdisplay]]</code>
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| − | * <code>[[blkid -s]] [[UUID]] -o value /dev/vdb1655</code>
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| − | * uuid=`findmnt /mnt/your_path -o UUID -n`
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| − | == EXT4 filesystem ==
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| − | <pre>
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| − | mkfs.ext4 /dev/vg01/lv01
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| − | mke2fs 1.44.1 (24-Mar-2018)
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| − | Creating filesystem with 2441850880 4k blocks and 305233920 inodes
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| − | Filesystem UUID: e6742357-a181-4b82-837f-9a01f3e52568
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| − | Superblock backups stored on blocks:
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| − | 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
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| − | 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
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| − | 102400000, 214990848, 512000000, 550731776, 644972544, 1934917632
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| − | Allocating group tables: done
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| − | Writing inode tables: done
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| − | Creating journal (262144 blocks): done
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| − | Writing superblocks and filesystem accounting information: done
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| − | </pre>
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| − | == LVM ==
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| − | <code>[[pvdisplay]]</code>
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| − | --- Physical volume ---
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| − | PV Name /dev/sdc3
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| − | VG Name rhvh
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| − | PV Size <7.28 TiB / not usable 3.00 MiB
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| − | Allocatable yes
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| − | PE Size 4.00 MiB
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| − | Total PE 1907390
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| − | Free PE 25600
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| − | Allocated PE 1881790
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| − | PV [[UUID]] Tk3lEU-NzHl-miXe-bKNk-wcNN-vvou-nM0IGD
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| − | <pre>
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| − | pvcreate --uuid "FmGRh3-zhok-iVI8-7qTD-S5BI-MAEN-NYM5Sk" --restorefile /etc/lvm/archive/VG_00050.vg /dev/sdh1
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| − | Physical volume "/dev/sdh1" successfully created
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| − | </pre>
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| − | <code>[[pvchange]] --[[uuid]]</code> Generate new random UUID for specified PVs.
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| − | == Related terms ==
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| − | * https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-04#name-uuid-version-7
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| − | * <code>[[/etc/fstab]]</code>
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| − | * <code>[[uuid]]</code> [[node.js]] [[module]]
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| − | * <code>[[uuidgen]]</code>
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| − | * [[Kubernetes UID]]
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| − | * [[Elasticsearch index]]: <code>[[curl -k "https://localhost:9200/_cat/indices?v&health=red]]" -u'XXX:UUU'</code>
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| − | * [[ULID]]
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| − | == See also ==
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| − | * {{mount}}
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| − | * {{Filesystems}}
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| − | * {{fs}}
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| − | * <code>[[libuuid]]</code> provided by <code>[[util-linux]]</code> package
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| − | * {{multipath}}
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| − | * [[PTUUID]] and [[PARTUUID]]
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| − | * {{UUID}}
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| − | [[Category:Linux]]
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