linux:btrfs
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linux:btrfs [2024/11/12 22:39] manu [BTRFS corruption] |
linux:btrfs [2024/11/12 22:52] (current) manu |
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| On peut monter avec l’option compress=zlib ou compress=lzo pour activer une compression à la volée des fichiers. Si le volume avant n’avait pas l’option compress on pourra tout recompresser avec btrfs filesystem defragment -czlib ou -clzo. | On peut monter avec l’option compress=zlib ou compress=lzo pour activer une compression à la volée des fichiers. Si le volume avant n’avait pas l’option compress on pourra tout recompresser avec btrfs filesystem defragment -czlib ou -clzo. | ||
| Maintenance | Maintenance | ||
| - | |||
| - | ===== BTRFS corruption ===== | ||
| - | |||
| - | Check data integrity on block and metadata level with repair if needed: | ||
| - | <cli prompt='#'> | ||
| - | # btrfs scrub start /backup/ | ||
| - | # btrfs scrub status /backup/ | ||
| - | </cli> | ||
| - | |||
| - | **btrfs check** seems to verify and optionally attempt repair of the structure of the filesystem. **btrfs scrub** verifies (and possibly repairs) the checksums of every data and metadata block | ||
| - | |||
| - | Advanced check on a partition: | ||
| - | <cli prompt='#'> | ||
| - | # btrfs check -p /dev/sda9 | ||
| - | </cli> | ||
| - | |||
| - | Check if the filesystem is in error, and indicate a progress bar: | ||
| - | <cli prompt='#'> | ||
| - | # btrfs dev stats /backup | ||
| - | </cli> | ||
| - | |||
| ==== Quota for Subvolumes ==== | ==== Quota for Subvolumes ==== | ||
| Line 260: | Line 239: | ||
| # btrfs device replace | # btrfs device replace | ||
| </cli> | </cli> | ||
| - | |||
| - | |||
| - | |||
| Create a subvolume with compression | Create a subvolume with compression | ||
| Line 320: | Line 296: | ||
| manu-opensuse:~ # snapper set-config SPACE_LIMIT=0.2 NUMBER_LIMIT=2-6 NUMBER_LIMIT_IMPORTANT=4 | manu-opensuse:~ # snapper set-config SPACE_LIMIT=0.2 NUMBER_LIMIT=2-6 NUMBER_LIMIT_IMPORTANT=4 | ||
| </cli> | </cli> | ||
| + | |||
| + | ===== BTRFS corruption ===== | ||
| + | |||
| + | Check data integrity on block and metadata level with repair if needed (using -B in background if needed) | ||
| + | <cli prompt='#'> | ||
| + | # btrfs scrub start /backup | ||
| + | </cli> | ||
| + | |||
| + | <cli prompt='#'> | ||
| + | # btrfs scrub status /backup | ||
| + | UUID: 76fac721-2294-4f89-a1af-620cde7a1980 | ||
| + | Scrub started: Wed Apr 10 12:34:56 2023 | ||
| + | Status: running | ||
| + | Duration: 0:00:05 | ||
| + | Time left: 0:00:05 | ||
| + | ETA: Wed Apr 10 12:35:01 2023 | ||
| + | Total to scrub: 28.32GiB | ||
| + | Bytes scrubbed: 13.76GiB (48.59%) | ||
| + | Rate: 2.75GiB/s | ||
| + | Error summary: no errors found | ||
| + | </cli> | ||
| + | |||
| + | With some errors found: | ||
| + | <code> | ||
| + | Error summary: csum=72 | ||
| + | Corrected: 2 | ||
| + | Uncorrectable: 72 | ||
| + | Unverified: 0 | ||
| + | </code> | ||
| + | |||
| + | **btrfs check** seems to verify and optionally attempt repair of the structure of the filesystem. **btrfs scrub** verifies (and possibly repairs) the checksums of every data and metadata block | ||
| + | |||
| + | Advanced check on a partition: | ||
| + | <cli prompt='#'> | ||
| + | # btrfs check -p /dev/sda9 | ||
| + | </cli> | ||
| + | |||
| + | Check if the filesystem is in error, and indicate a progress bar: | ||
| + | <cli prompt='#'> | ||
| + | # btrfs device stats /dev/sda3 | ||
| + | [/dev/sda3].write_io_errs 0 | ||
| + | [/dev/sda3].read_io_errs 0 | ||
| + | [/dev/sda3].flush_io_errs 0 | ||
| + | [/dev/sda3].corruption_errs 0 | ||
| + | [/dev/sda3].generation_errs 0 | ||
| + | </cli> | ||
| + | |||
| + | ===== script btrfs_size.sh ===== | ||
| <cli prompt='#'> | <cli prompt='#'> | ||
linux/btrfs.1731447567.txt.gz · Last modified: 2024/11/12 22:39 by manu
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