système de fichiers BTRFS

Salut,

J'aimerais apprendre à administrer un système de fichier BTRFS mais je ne trouve aucun tutoriel pour en assurer la maintenance…

Actuellement j'ai un tel système sur ma Raspberry Pi 3 mais j'ai les erreurs ci-dessous qui s'affichent et je ne sais même plus qui est mon device dm-1… ?! QUI*PEUT*M'AIDER ?

WARNING: Kernel Errors Present
BTRFS error (device dm-1): b ...: 10205 Time(s)
BTRFS warning (device dm-1): lost page write due to IO error on /dev/sdc1 ...: 3999 Time(s)
Buffer I/O error on dev sda, logi ...: 3 Time(s)
blk_update_request: I/O error, dev sda, sector ...: 6 Time(s)
btrfs_dev_stat_print_on_error: 1 callbacks sup ...: 11 Time(s)
btrfs_dev_stat_print_on_error: 10 callbacks su ...: 9 Time(s)
btrfs_dev_stat_print_on_error: 102 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 106 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 108 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 11 callbacks su ...: 11 Time(s)
btrfs_dev_stat_print_on_error: 113 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 114 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 115 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 1192 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 12 callbacks su ...: 4 Time(s)
btrfs_dev_stat_print_on_error: 120 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 122 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 128 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 129 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 13 callbacks su ...: 4 Time(s)
btrfs_dev_stat_print_on_error: 130 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 13361 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 134 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 135 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 137 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 138 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 14 callbacks su ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 141 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 142 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 14274 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 14956 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 14969 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 14995 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 15 callbacks su ...: 8 Time(s)
btrfs_dev_stat_print_on_error: 154 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 15527 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 15784 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 16 callbacks su ...: 17 Time(s)
btrfs_dev_stat_print_on_error: 162 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 17 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 173 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 174 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 175 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 17852 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 18 callbacks su ...: 25 Time(s)
btrfs_dev_stat_print_on_error: 19 callbacks su ...: 34 Time(s)
btrfs_dev_stat_print_on_error: 19279 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 2 callbacks sup ...: 19 Time(s)
btrfs_dev_stat_print_on_error: 20 callbacks su ...: 38 Time(s)
btrfs_dev_stat_print_on_error: 203 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 20365 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 21 callbacks su ...: 23 Time(s)
btrfs_dev_stat_print_on_error: 21071 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 21170 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 22 callbacks su ...: 13 Time(s)
btrfs_dev_stat_print_on_error: 221 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 223 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 230 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 24 callbacks su ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 246 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 25 callbacks su ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 250 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 258 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 259 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 260 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 26305 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 27 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 27277 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 280 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 28604 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 288 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 29 callbacks su ...: 31 Time(s)
btrfs_dev_stat_print_on_error: 3 callbacks sup ...: 18 Time(s)
btrfs_dev_stat_print_on_error: 30 callbacks su ...: 62 Time(s)
btrfs_dev_stat_print_on_error: 30250 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 31 callbacks su ...: 50 Time(s)
btrfs_dev_stat_print_on_error: 32 callbacks su ...: 36 Time(s)
btrfs_dev_stat_print_on_error: 33 callbacks su ...: 10 Time(s)
btrfs_dev_stat_print_on_error: 34 callbacks su ...: 9 Time(s)
btrfs_dev_stat_print_on_error: 35 callbacks su ...: 25 Time(s)
btrfs_dev_stat_print_on_error: 352 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 355 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 359 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 36 callbacks su ...: 18 Time(s)
btrfs_dev_stat_print_on_error: 362 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 369 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 37 callbacks su ...: 13 Time(s)
btrfs_dev_stat_print_on_error: 372 callbacks s ...: 4 Time(s)
btrfs_dev_stat_print_on_error: 373 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 374 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 375 callbacks s ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 376 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 377 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 378 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 379 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 38 callbacks su ...: 15 Time(s)
btrfs_dev_stat_print_on_error: 382 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 383 callbacks s ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 384 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 386 callbacks s ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 387 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 389 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 39 callbacks su ...: 18 Time(s)
btrfs_dev_stat_print_on_error: 390 callbacks s ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 391 callbacks s ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 392 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 393 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 394 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 395 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 397 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 398 callbacks s ...: 4 Time(s)
btrfs_dev_stat_print_on_error: 4 callbacks sup ...: 6 Time(s)
btrfs_dev_stat_print_on_error: 40 callbacks su ...: 13 Time(s)
btrfs_dev_stat_print_on_error: 400 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 401 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 407 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 409 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 41 callbacks su ...: 16 Time(s)
btrfs_dev_stat_print_on_error: 410 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 411 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 412 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 413 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 414 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 417 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 418 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 419 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 42 callbacks su ...: 21 Time(s)
btrfs_dev_stat_print_on_error: 420 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 421 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 422 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 423 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 424 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 427 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 43 callbacks su ...: 13 Time(s)
btrfs_dev_stat_print_on_error: 431 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 432 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 433 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 434 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 436 callbacks s ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 438 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 439 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 44 callbacks su ...: 10 Time(s)
btrfs_dev_stat_print_on_error: 440 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 443 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 444 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 445 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 446 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 45 callbacks su ...: 6 Time(s)
btrfs_dev_stat_print_on_error: 458 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 46 callbacks su ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 461 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 463 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 467 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 47 callbacks su ...: 4 Time(s)
btrfs_dev_stat_print_on_error: 472 callbacks s ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 48 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 49 callbacks su ...: 5 Time(s)
btrfs_dev_stat_print_on_error: 5 callbacks sup ...: 7 Time(s)
btrfs_dev_stat_print_on_error: 50 callbacks su ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 51 callbacks su ...: 5 Time(s)
btrfs_dev_stat_print_on_error: 52 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 53 callbacks su ...: 5 Time(s)
btrfs_dev_stat_print_on_error: 54 callbacks su ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 55 callbacks su ...: 5 Time(s)
btrfs_dev_stat_print_on_error: 557 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 56 callbacks su ...: 4 Time(s)
btrfs_dev_stat_print_on_error: 57 callbacks su ...: 5 Time(s)
btrfs_dev_stat_print_on_error: 58 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 582 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 6 callbacks sup ...: 5 Time(s)
btrfs_dev_stat_print_on_error: 60 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 61 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 62 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 63 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 64 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 65 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 667 callbacks s ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 67 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 69 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 7 callbacks sup ...: 5 Time(s)
btrfs_dev_stat_print_on_error: 71 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 72 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 73 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 74 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 7480 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 75 callbacks su ...: 3 Time(s)
btrfs_dev_stat_print_on_error: 78 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 8 callbacks sup ...: 10 Time(s)
btrfs_dev_stat_print_on_error: 80 callbacks su ...: 4 Time(s)
btrfs_dev_stat_print_on_error: 81 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 82 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 8215 callbacks ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 83 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 84 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 85 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 87 callbacks su ...: 1 Time(s)
btrfs_dev_stat_print_on_error: 88 callbacks su ...: 2 Time(s)
btrfs_dev_stat_print_on_error: 9 callbacks sup ...: 11 Time(s)
btrfs_dev_stat_print_on_error: 92 callbacks su ...: 1 Time(s)
usb 1-1.3: device descriptor read/64, error -71 ...: 1 Time(s)

Citation:

Envoyé par relaxmax68

J'aimerais apprendre à administrer un système de fichier BTRFS mais je ne trouve aucun tutoriel pour en assurer la maintenance…

Actuellement j'ai un tel système sur ma Raspberry Pi 3 mais j'ai les erreurs ci-dessous qui s'affichent et je ne sais même plus qui est mon device dm-1… ?! QUI*PEUT*M'AIDER ?

Bonjour,
Tout d'abord merci d'utiliser la balise code (icône # ou bien code /code encadré par des [ et ]) pour les messages d'erreur.

Ensuite, il existe le traditionnel man btrfs pour apprendre par soi-même et les forums dédiés. De plus, il est indispensable de communiquer plus de détails sur ton installation (système d'exploitation, résultats de commandes de type show, etc.) :

https://btrfs.wiki.kernel.org/index....#Documentation

https://btrfs.wiki.kernel.org/index....Distro_support

https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs

... et pour ce qui concerne plus spécialement ton problème rencontré:

https://btrfs.wiki.kernel.org/index.php/SysadminGuide

http://man7.org/linux/man-pages/man8/btrfs.8.html

etc,

Merci de publier les résultats de tes investigations,

Merci EscapeTiger pour ta réponse.

Ok, je veillerai à mieux me servir des balises dans mes prochains post.

Pas facile de "naviguer" dans tous les concepts du BTRFS… j'ai bien fait le tour des pages man… des wikis… des forums… et c'est par dépit que j'ai fini par demander de l'aide ici. Pas de réponse de mon club Linux non plus.

Pour les infos :

Mon Raspberry tourne avec Debian Stretch sur lequel je m'essaye à m'autohéberger via Nextcloud.
Jusque là j'utilisais mdadm pour me fournir un RAID1 pour mes données.
Et puis j'ai vu dans les mises à jour qu'on me proposait d'utiliser le BTRFS pour les sauvegardes, ce qui me paraissait très intéressant vu son système de snapshot…

Mais autant j'arrivais à maintenir mon RAID, autant je ne comprends pas d'où viennent toutes ces erreurs. Mes deux HDD qui constituent mon groupe de volume sont fonctionnels…

Bon, je vais voir ce que je peux faire. À+

Résultats de quelques commandes :

Code:

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btrfs fi usage /mnt/raid1
Overall:
    Device size:                 118.64GiB
    Device allocated:             24.06GiB
    Device unallocated:           94.58GiB
    Device missing:                  0.00B
    Used:                         19.16GiB
    Free (estimated):             47.74GiB      (min: 47.74GiB)
    Data ratio:                       2.00
    Metadata ratio:                   2.00
    Global reserve:               16.00MiB      (used: 0.00B)
 
Data,RAID1: Size:10.00GiB, Used:9.55GiB
   /dev/mapper/diskE-BTRFS        10.00GiB
   /dev/sdd1      10.00GiB
 
Metadata,RAID1: Size:2.00GiB, Used:31.03MiB
   /dev/mapper/diskE-BTRFS         2.00GiB
   /dev/sdd1       2.00GiB
 
System,RAID1: Size:32.00MiB, Used:16.00KiB
   /dev/mapper/diskE-BTRFS        32.00MiB
   /dev/sdd1      32.00MiB
 
Unallocated:
   /dev/mapper/diskE-BTRFS        87.97GiB
   /dev/sdd1       6.61GiB

Code:

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scrub status for d2f1073c-ef68-4d8c-b66a-b36f9cca9844
        scrub started at Mon Feb 12 19:13:10 2018 and finished after 00:22:27
        total bytes scrubbed: 19.16GiB with 2505247 errors
        error details: read=2505245 super=2
        corrected errors: 448, uncorrectable errors: 2504797, unverified errors: 0

Code:

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btrfs fi df /mnt/raid1/
Data, RAID1: total=10.00GiB, used=9.55GiB
System, RAID1: total=32.00MiB, used=16.00KiB
Metadata, RAID1: total=2.00GiB, used=31.03MiB
GlobalReserve, single: total=16.00MiB, used=0.00B