[Lustre-discuss] filesystem corruption

[恩强周]

hi all，

I have lustre  corrupted when a OSS powered off by ipmi accidentally. I get
followling messages after that OSS restart.
...
(fs/jbd/recovery.c, 256): journal_recover: JBD: recovery, exit status 0,
recovered transactions 1875142 to 1885541
(fs/jbd/recovery.c, 258): journal_recover: JBD: Replayed 48361 and revoked
0/0 blocks
kjournald starting.  Commit interval 5 seconds
LDISKFS-fs warning: maximal mount count reached, running e2fsck is
recommended
LDISKFS FS on sda, internal journal
LDISKFS-fs: recovery complete.
LDISKFS-fs: mounted filesystem with ordered data mode.
LDISKFS-fs error (device sda): ldiskfs_check_descriptors: Block bitmap for
group 43776 not in group (block 222298112)!
Remounting filesystem read-only
LDISKFS-fs: group descriptors corrupted!
LustreError: 3901:0:(obd_mount.c:1320:server_kernel_mount()) ll_kern_mount
failed: rc = -22
LustreError: 3901:0:(obd_mount.c:1590:server_fill_super()) Unable to mount
device /dev/sda: -22
LustreError: 3901:0:(obd_mount.c:1993:lustre_fill_super()) Unable to mount
(-22)

Our OSS server is running lustre-1.8.0,equipped with areca RAID adapter with
write cache enabled.I have a worry about data on lustre  maybe lost.
And waht's the cause of such a problem?How can I fixed it?

Thanks in advance!
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