[Ocfs-devel] ocfs issues with 9.2.0.3

Karthik Ramadoss krama at asugroup.com
Tue Nov 11 11:19:27 CST 2003


I am starting to see a few issues with OCFS and 9.2.0.3 RAC on
redHat Linux AS 2.1. Wondering if there is anyone out there
experiencing similar issues... 

a few pointers to the issues..
1. OCFS read/write performance is way lower than a read/write to a raw
device.. i can give you some comparison numbers..

2. Writes to shared disk with ocfs would get locked up by one server..
it doesnt have to even be an oracle process.. just a file copy will
lock up the directory and the other server trying to access the same
directory in the shared disk will just hang (os process has a state
'D').... the only way to free
this up is to unmount the shared disks from the other server.. even
killing the
process which is hanging doesnt work (kill -9).. 'strace -p' also hangs
and obviously the process is waiting on io..

Is there anyone else experiencing this kind of issue? 

Thanks
Karthik Ramadoss
Oracle Apps DBA 
The ASU Group



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