[Ocfs-users] OCFS disk failure problem.

[Chris Steinke]

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