[Ocfs-users] OCFS disk failure problem.

[Sunil Mushran]

The error listed concerns failiure to mount. Appears something overwrote 
atleast the
first block on disk.

email me the output of the following:
dd if=/dev/shareddisk of=outfile bs=1024 count=3000
Remember to gzip it. :-)

Lets see if the contents shed any light as to the extent of damage and
possibly more.

Sunil

Chris Steinke wrote:

>Hi, 
>
>Irecently setup a Oracle 10g RAC test environment with two HP/Compaq
>DL380s and a shared disk array. The array is presented as a single 136GB
>disk. 
>
>The systems are running RedHat AS 3.0 Update 4.
>OCFS 1.0.13-PROD1 build: 5e87201061935f464cf6541c56eb2827
>Oracle 10g 10.1.0.3.0 
>
>I was able to get everything working, had a database created and 
>running an instance on each system. 
>
>The problems started when I attempted to import an exported database.
>The import failed, then the OCFS filesystem seemed to have gone
>'downhill' from there. The systems were rebooted, then the system
>refused to recognize the OCFS filesystem that was created.
>
>I had ORACLE_HOME on a local drive (/x00) then the shared drive had the
>cluster support files (Cluster Register and Voting File) along with the
>database files were on the (/x01) shared volume. 
>
>These are some of the errors found in the syslog, there are no other
>operating system or hardware messages, only the OCFS errors. The module
>does load and 'lsmod | grep ocfs' produces:
>
>ocfs                  299272   0
>
>---- SYSLOG Messages ----
>Oracle Cluster FileSystem 1.0.13-PROD1 Tue Aug 10 11:31:03 PDT 2004
>(build 5e87201061935f464cf6541c56eb2827)
>(1158) ERROR: Invalid volume signature, Common/ocfsgenmisc.c, 820
>(1158) ERROR: Device (104,17) failed verification, Linux/ocfsmount.c,
>233
>(1158) ERROR: Error mounting volume, Linux/ocfsmain.c, 314
>------------------------
>
>I had a similiar test using GFS from redhat, but that failed as soon as
>any appreciable load was put on the system. 
>
>I was able to get farther with OCFS, but it seems that as soon as I put
>a decent sized load on it, the filesystem seemed to have failed. 
>
>Anyone else experience this problem? Any ideas on how to recover? Or
>maybe I missed something when I set it up. 
>
>Any help, comments, suggestions would be most appreciated. Thank you
>everyone in advance. 
>
>
>
>Chris Steinke- chris.steinke at caltech.edu
>Senior UNIX systems administrator
>California Institute of Technology - Administrative Technology Center
>
>
>
>
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