[Linux-cluster] Can not fsck gfs2 file system

[Theophanis Kontogiannis]

  Hello all,


Centos 5.5
drbd --> lv --> gfs2
gfs2_tool 0.1.62 (built Mar 31 2010 07:34:45)

The filesystem was created in Centos5.2

Running gfs2_fsck seg faults:

    [root at tweety-2 /]# gfs2_fsck -v /dev/mapper/vg1-data1
    Initializing fsck
    Initializing lists...
    jid=0: Looking at journal...
    jid=0: Journal is clean.
    jid=1: Looking at journal...
    jid=1: Journal is clean.
    jid=2: Looking at journal...
    jid=2: Journal is clean.
    jid=3: Looking at journal...
    jid=3: Journal is clean.
    jid=4: Looking at journal...
    jid=4: Journal is clean.
    jid=5: Looking at journal...
    jid=5: Journal is clean.
    Segmentation fault
    gfs2_fsck[5131]: segfault at 00000000000000f0 rip 000000000040aefa
    rsp 00007fffd02c2d50 error 4


The nice thing is that it also alters the lock mechanism defined for the 
fs, in one that does not exist (fsck_dlm):

    [root at tweety-2 /]# mount /mounts
    /sbin/mount.gfs2: error mounting /dev/mapper/vg1-data1 on /mounts:
    No such file or directory

    GFS2: fsid=: Trying to join cluster "fsck_dlm", "tweety:gfs2-11"
    GFS2: can't find protocol fsck_dlm
    GFS2: fsid=: can't mount proto=fsck_dlm, table=tweety:gfs2-11, hostdata=
    GFS2: fsid=: Trying to join cluster "fsck_dlm", "tweety:gfs2-11"
    GFS2: can't find protocol fsck_dlm
    GFS2: fsid=: can't mount proto=fsck_dlm, table=tweety:gfs2-11, hostdata=
    GFS2: fsid=: Trying to join cluster "fsck_dlm", "tweety:gfs2-11"
    GFS2: can't find protocol fsck_dlm
    GFS2: fsid=: can't mount proto=fsck_dlm, table=tweety:gfs2-11, hostdata=


It gets restored with:

    [root at tweety-2 /]# gfs2_tool sb /dev/mapper/vg1-data1 proto lock_dlm
    You shouldn't change any of these values if the filesystem is mounted.

    Are you sure? [y/n] y

    current lock protocol name = "fsck_dlm"
    new lock protocol name = "lock_dlm"
    Done


    [root at tweety-2 /]#mount /mounts
    [root at tweety-2 /]#

    GFS2: fsid=: Trying to join cluster "lock_dlm", "tweety:gfs2-11"
    GFS2: fsid=tweety:gfs2-11.0: Joined cluster. Now mounting FS...
    GFS2: fsid=tweety:gfs2-11.0: jid=0, already locked for use
    GFS2: fsid=tweety:gfs2-11.0: jid=0: Looking at journal...
    GFS2: fsid=tweety:gfs2-11.0: jid=0: Done
    GFS2: fsid=tweety:gfs2-11.0: jid=1: Trying to acquire journal lock...
    GFS2: fsid=tweety:gfs2-11.0: jid=1: Looking at journal...
    GFS2: fsid=tweety:gfs2-11.0: jid=1: Done
    GFS2: fsid=tweety:gfs2-11.0: jid=2: Trying to acquire journal lock...
    GFS2: fsid=tweety:gfs2-11.0: jid=2: Looking at journal...
    GFS2: fsid=tweety:gfs2-11.0: jid=2: Done
    GFS2: fsid=tweety:gfs2-11.0: jid=3: Trying to acquire journal lock...
    GFS2: fsid=tweety:gfs2-11.0: jid=3: Looking at journal...
    GFS2: fsid=tweety:gfs2-11.0: jid=3: Done
    GFS2: fsid=tweety:gfs2-11.0: jid=4: Trying to acquire journal lock...
    GFS2: fsid=tweety:gfs2-11.0: jid=4: Looking at journal...
    GFS2: fsid=tweety:gfs2-11.0: jid=4: Done
    GFS2: fsid=tweety:gfs2-11.0: jid=5: Trying to acquire journal lock...
    GFS2: fsid=tweety:gfs2-11.0: jid=5: Looking at journal...
    GFS2: fsid=tweety:gfs2-11.0: jid=5: Done

I have saved all my date, but before destroying this GFS2, would any 
developer like me to assist in debugging?

(Filed as https://bugzilla.redhat.com/show_bug.cgi?id=620384)

Sincerely,

Theophanis Kontogiannis

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