Use writeback. Ordered data requires the data to be flushed before journal commit. And flushing 40G takes time.
mount -t data=writeback DEVICE PATH On 10/20/2011 03:05 PM, Prakash Velayutham wrote: > Hi, > > OS - SLES 11.1 with HAE > OCFS2 - 1.4.3-0.16.7 > Cluster stack - Pacemaker > > I have Heartbeat Filesystem monitor that monitors the OCFS2 file system for > availability. This monitor kicks in every minute and tries to write a file > using dd as below. > > dd of=/var/lib/mysql/data1/.Filesystem_status/default_bmimysqlp3 > oflag=direct,sync bs=512 conv=fsync,sync > > If the OCFS2 file system is busy, like when I try to create 2 large files > (20GB each) in the OCFS2 directory, I see that the above monitor process > hangs until the 2 files are created. But this causes Pacemaker to fence the > node as the RA is configured for a timeout of 45secs and the 2 file creations > do take more than that. The OCFS2 file system is mounted as below. > > /dev/mapper/bmimysqlp3_p4_vol1 on /var/lib/mysql/data1 type ocfs2 > (rw,_netdev,nointr,data=ordered,cluster_stack=pcmk) > > Is there something wrong with the file system itself that a small file > creation hangs like that? Please let me know if you need any more information. > > Thanks, > Prakash > _______________________________________________ > Ocfs2-users mailing list > Ocfs2-users@oss.oracle.com > http://oss.oracle.com/mailman/listinfo/ocfs2-users _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
