Ping Novell for issues on SLES10. The error suggests that you are encountering novell bz#524683. This has been addressed in ocfs2 1.4.4. Ping Novell for a PTF kernel with the fix.
Angelo McComis wrote: > Hello -- > > We're running a handful of OCFS2 clusters on Novell SuSE SLES 10 SP2. > We are in front of IBM SVC storage, and on HP Blade hardware via the > QLA 2xxx HBAs. > > We have an application from IBM that makes use of files in this space > in a grid style environment, and we are in the process of debugging > some I/O issues and crashes, but while we do, I'm wondering if there > is any good reference on what constitutes a solid starting point for > tuning how many concurrent accesses to a directory are allowed, or if > there are specific tunables that are outside the default we need. > > > There are some strange errors that I can't decipher: > > Sep 25 12:11:30 host02 kernel: (4438,4):dlmunlock_common:128 ERROR: > lockres F00000000000000003b1341b545b16f: Someone is calling dlmunlock > while waiting for an ast!<3>(4438,4):dlmunlock:685 ERROR: dlm status = > DLM_BADPARAM > > Sep 25 12:11:30 host02 kernel: (4438,4):ocfs2_cancel_convert:3092 > ERROR: Dlm error "DLM_BADPARAM" while calling dlmunlock on resource > F00000000000000003b1341b545b16f: invalid lock mode specified > > The symptom of the problem is that file access to the mountpoint of > ocfs2 space gets gradually slower and slower until the system just > crashes / becomes unresponsive when trying to access files there, cd > into the directory, etc. > > What we've done so far: > > - Checked our multipath configuration - seems to be showing all paths > to our disks, none offline, none failed, etc. > - Checked our lvm configuration - seems to be good as well. > - Checked our HBA configuration -- made some changes in regards to > retry and failover... but this change has made the behavior no better. > > Anyone can point me in the right direction or help me know what > questions to even start asking here? > > The problem seems related to multiple / concurrent access to > directories within an OCFS2 filesystem, and how DLM is behaving. > > > Our OS ver/kernel is 2.6.16.60-0.42.5-smp (Novell SLES10-sp2 + patches) > > Thanks in advance... > > Angelo > > _______________________________________________ > 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
