On Sun, Apr 08, 2012 at 10:54:52AM -0700, Jay V wrote: > I have a similar blocking/hanging/stall issue. On Oracle 6.2/x64. We > are running OCFS2 on 3 partitions about 14-15TB each. One of the > partitions has been running extremely slowly too. They are running on > the same hardware-- LSI HW Raid Cards and Enterprise Drives. I am > running over drbd and nfsd.
How do drbd and nfsd fit in your scheme? nfsd is on top of ocfs2, right? You're exporting ocfs2 volumes via NFS? Can you think of any differences between the slow partition and the fast ones? > I am getting really slow performance in writes. The process > [jbd2-drbd-18] seems to be stuck for a long length of time (about 2 > minutes) before it finally commits. This jbd2-drbd2 prevents any other > writes from happening which stalls the system. I'm worried that drbd is doing things slowly and getting in your way. But given the slowdown you are replying to, that might not be the only issue. > This would be from "ps auxr" > USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND > root 6374 0.0 0.0 0 0 ? D Apr03 0:28 > [jbd2/drbd2-18] > root 6876 0.0 0.0 0 0 ? D Apr06 0:11 [nfsd] > root 6884 0.0 0.0 0 0 ? D Apr06 0:09 [nfsd] > root 6999 0.0 0.0 0 0 ? D Apr06 0:45 [nfsd] > root 7046 0.0 0.0 0 0 ? D Apr06 0:09 [nfsd] > root 7053 0.0 0.0 0 0 ? D Apr06 0:09 [nfsd] > root 7054 0.0 0.0 0 0 ? D Apr06 0:08 [nfsd] > > Running "scan_locks2" shows nothing. Nothing is held up locking wise. > It seems to happen more with files copying about 1MB or larger. It > only happens for me on my second partition, but not the other 2. It > seems to super slow in writes. Reads are fast. > > I hope to find a solution quickly too. I wonder it is because we have > very large partitions. It shouldn't be because of large partitions. How long have your partitions been around? How full are they? Joel -- One look at the From: understanding has blossomed .procmailrc grows - Alexander Viro http://www.jlbec.org/ jl...@evilplan.org _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users