Red Hat Bugzilla – Bug 70118
NFS kernel module crashes on high write load
Last modified: 2007-04-18 12:44:52 EDT
From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.0.3705) Description of problem: This seemed at first similar to bugs 64921, 64984 and 65772, as fixed in 2.4.18-5, but we are still experiencing kernel panic problems under high write load of the nfs server. All clients mount with auto,noac,async,rsize =8192,wsize=8192,rw,bg,soft,intr,nfsvers=2 kern.log shows the following: Jul 30 00:40:31 lifetimefs1 kernel: Assertion failure in journal_commit_transact ion() at commit.c:535: "buffer_jdirty(bh)" Jul 30 00:40:31 lifetimefs1 kernel: ------------[ cut here ]------------ Jul 30 00:40:31 lifetimefs1 kernel: kernel BUG at commit.c:535! Jul 30 00:40:31 lifetimefs1 kernel: invalid operand: 0000 Jul 30 00:40:31 lifetimefs1 kernel: autofs nfs nfsd lockd sunrpc eepro100 ipchains usb-ohci usbcore ext3 jbd cciss At this point all is dead, even console logins don't work and a powercycle is the only solution. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. High write load on the NFS server 2. 3. Actual Results: kernel panic and server is doa! Expected Results: NFS server keeps running :-) Additional info:
Is it always the same crash? 99% or more of the occurrences of this problem were fixed in 2.4.18-4smp, but I continued to get just a few rare reports even with the fixed kernel, and found another possible cause of the same problem since then. That is fixed in our internal tree and will be part of the next errata kernel.
See http://people.redhat.com/arjanv/testkernels/ for a 2.4.18-7 kernel which should hopefully fix this problem.
*** This bug has been marked as a duplicate of 68026 ***