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Re: [Linux-cluster] GFS volume already mounted or /mnt busy?



Thanks Robert.  I'm sorry, but I put you a little off track do to a typo.  I meant to say that gfs_fsck completes without errors.  I've run it twice.  The first pass did make a number of corrections, but completed through stage 5.  A subsequent gfs_fsck completed with no errors.

The "gfs_tool sb /dev/etherd/e1.1 proto" does return lock_dlm as the lock protocol.

Which package contains the gfs_edit tool?

Thanks again,
Tom

On 12/22/06, Robert Peterson <rpeterso redhat com> wrote:
Robert Peterson wrote:
> bigendian+gfs gmail com wrote:
>> Hello Robert,
>>
>> The other node was previously rebuilt for another temporary purpose
>> and isn't attached to the SAN.  The only thing I can think of that
>> might have been out of the ordinary is that I may have pulled the
>> power on the machine while it was shutting down during some file
>> system operation.  The disk array itself never lost power.
>>
>> I do have another two machines configured in a different cluster
>> attached to the SAN.  CLVM on machines in the other cluster does show
>> the volume that I am having trouble with though those machines do not
>> mount the device.  Could this have caused the trouble?
>> More importantly, is there a way to repair the volume?  I can see the
>> device with fdisk -l and gfs_fsck completes with errors, but mount
>> attempts always fail with the "mount: /dev/etherd/e1.1 already
>> mounted or /gfs busy" error.  I don't know how to debug this at a
>> lower level to understand why this error is happening.  Any pointers?
Hi Tom,

Another thought.  If someone went in there without your knowledge and
did something bad
like mkfs.ext3 /dev/etherd/e1.1 (or mkfs.vfat, reiserfs, xfs, jffs2, or
whatever)
or worse, the underlying device, it would also manifest itself as the
problem you're seeing.

If it were me, I'd do: "gfs_edit /dev/etherd/e1.1" and have a look at
block 0.
The gfs_edit tool starts you out on block 0x10 (the superblock), so
you'll have to do 16
"b" keystrokes or else arrow up and change block number to 0 and press
enter.  The first
16 blocks of the file system should be all zeros, 0x00.  If they look
like a bunch of numbers
instead, then maybe somebody overwrote your file system.  BTW, gfs_edit
is a dangerous
tool so don't change anything with it.

Regards,

Bob Peterson
Red Hat Cluster Suite

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