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software:files [2024/07/05 08:09]
cyril [Tools] |
software:files [2026/04/24 22:23] (current)
cyril |
| * Create a read-only snapshot: ''btrfs subvolume snapshot -r <input-subvolume-path> <output-snapshot-path>'' (<output-snapshot-path> is typically <input-subvolume-path>/.snapshots/<date>) (just remove ''-r'' for a read-write snapshot). | * Create a read-only snapshot: ''btrfs subvolume snapshot -r <input-subvolume-path> <output-snapshot-path>'' (<output-snapshot-path> is typically <input-subvolume-path>/.snapshots/<date>) (just remove ''-r'' for a read-write snapshot). |
| * Delete a snapshot: ''btrfs subvolume delete <snapshot-path>'' | * Delete a snapshot: ''btrfs subvolume delete <snapshot-path>'' |
| * Analyze snapshot disk usage: ''btrfs quota enable <subvolume>'' and then ''btrfs qgroup show <subvolume>'' [[[https://unix.stackexchange.com/questions/188315/how-to-check-simulate-how-much-space-will-be-freed-after-i-remove-a-btrfs-sub|source]]] | * Analyze snapshot disk usage: |
| | * ''btrfs filesystem du -s <subvolume>'' shows shared and exlusive storage |
| | * Alternative:''btrfs quota enable <subvolume>'' and then ''btrfs qgroup show <subvolume>'', but enabling quotas makes the FS slower and a bit more unstable [[[https://unix.stackexchange.com/questions/188315/how-to-check-simulate-how-much-space-will-be-freed-after-i-remove-a-btrfs-sub|source]]] |
| * ZFS snapshots: | * ZFS snapshots: |
| * They can be recursive. | * They can be recursive. |
