Dotaz: Problém s RAIDem

[Petr]

Dobrý den, mám problém s RAIDem, jeste odpoledne to fungovalo.

sl0 ~ # mount /dev/md0
mount: wrong fs type, bad option, bad superblock on /dev/md0,
       missing codepage or other error
       (could this be the IDE device where you in fact use
       ide-scsi so that sr0 or sda or so is needed?)
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

sl0 ~ # mount /dev/md0 /home/
mount: /dev/md0: superblok nelze přečíst

Dále jsem našel v logu toto:

sl0 ~ # dmesg | grep md0
md: created md0
raid5: not enough operational devices for md0 (2/3 failed)
raid5: failed to run raid set md0
md: md0 stopped.
md: md0 stopped.
ReiserFS: md0: warning: sh-2006: read_super_block: bread failed (dev md0, block 2, size 4096)
ReiserFS: md0: warning: sh-2006: read_super_block: bread failed (dev md0, block 16, size 4096)
ReiserFS: md0: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on md0
ReiserFS: md0: warning: sh-2006: read_super_block: bread failed (dev md0, block 2, size 4096)
ReiserFS: md0: warning: sh-2006: read_super_block: bread failed (dev md0, block 16, size 4096)
ReiserFS: md0: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on md0

Prosím poraďte.

Odpovědi

[Zdeněk Burda]

Jaký je stav raidu? (cat /proc/mdstat)

[Petr]

# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid5] [faulty]
unused devices: none

[Petr]

Jsem zoufalý, opravdu by někdo nevěděl ? Mám na tom firemní data :(

[Petr]

vidi kernel ty disky ? Dej sem kus z dmesg - ten kde je detekuje

[Petr]

Ano, kernel disky vidi, problem je v tom, ze nemuze precist superblok a ja nevim, co s tim.

[Zdeněk Burda]

podle obsahu /proc/mdstat není pole vůbec nahozené, zkus ho nejdřív nahodit a pak až něco mountovat.