[Ocfs2-users] Bad magic number in inode

[Werner Flamme]

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Hi,

when I try to mount an OCFS2 volume, I get

- ---snip---
[12212.195823] OCFS2: ERROR (device sde1): ocfs2_validate_inode_block:
Invalid dinode #11: signature =
[12212.195825]
[12212.195827] File system is now read-only due to the potential of
on-disk corruption. Please run fsck.ocfs2 once the file system is
unmounted.
[12212.195832] (mount.ocfs2,9772,0):ocfs2_read_locked_inode:499 ERROR:
status = -22
[12212.195842] (mount.ocfs2,9772,0):_ocfs2_get_system_file_inode:158
ERROR: status = -116
[12212.195853]
(mount.ocfs2,9772,0):ocfs2_init_global_system_inodes:475 ERROR: status
= -22
[12212.195860]
(mount.ocfs2,9772,0):ocfs2_init_global_system_inodes:478 ERROR: Unable
to load system inode 4, possibly corrupt fs?
[12212.195862] (mount.ocfs2,9772,0):ocfs2_initialize_super:2379 ERROR:
status = -22
[12212.195864] (mount.ocfs2,9772,0):ocfs2_fill_super:1064 ERROR:
status = -22
[12212.195869] ocfs2: Unmounting device (8,65) on (node 0)
- ---pins---

And doing an fsck, it looks like this:
- ---snip---
# fsck.ocfs2 -f  /dev/disk/by-label/ERSATZ
fsck.ocfs2 1.8.0
Checking OCFS2 filesystem in /dev/disk/by-label/ERSATZ:
  Label:              ERSATZ
  UUID:               AEB995484F2D4D19835AA380CAE0683A
  Number of blocks:   268434093
  Block size:         4096
  Number of clusters: 268434093
  Cluster size:       4096
  Number of slots:    40

/dev/disk/by-label/ERSATZ was run with -f, check forced.
Pass 0a: Checking cluster allocation chains
pass0: Bad magic number in inode reading inode alloc inode 11 for
verification
fsck.ocfs2: Bad magic number in inode while performing pass 0
- ---pins---

Any chance to access the filesystem other that reformatting it?

The node ist the only node that can access this volume. I plan to
share it via iSCSI, but first it must be mountable... There are 3
other volumes in this cluster, mounted by about a dozen nodes.

Regards,
Werner
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