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Description of problem: If you run bonnie++ (epel but the source of this seems immaterial) from a RHEL6.2 machine to another RHEL6 machine (NFSv4) or a RHEL5 machine (NFSv3). It fails with: Bonnie: drastic I/O error (rmdir): Directory not empty This succeeded with the 6.1 kernels using identical bonnie++ version.Seems to have been broken in 6.2 I'm concerned that this might indicate a serious problem with NFS in 6.2 that might hit us on production applications. Version-Release number of selected component (if applicable): How reproducible: Every time Steps to Reproduce: 1.Just run bonnie++ against and NFS mount (-d flag) Actual results: Writing a byte at a time...done Writing intelligently...done Rewriting...done Reading a byte at a time...done Reading intelligently...done start 'em...done...done...done...done...done... Create files in sequential order...done. Stat files in sequential order...done. Delete files in sequential order...Bonnie: drastic I/O error (rmdir): Directory not empty Cleaning up test directory after error. Expected results: Successful bonnie++ run. Additional info: Even though I'm testing in a pure RHEL6.2 environment and see this, googling around the Centos guys have seen this issue and have dug a bit deeper on it: http://bugs.centos.org/view.php?id=5496 Might help with debugging this issue.
Thanks for the report - can you please also open a call with Red Hat support for us? Regards, Ric
Has been open for 2 weeks at Case#00598633
Sorry, I missed that!
I think what's needed here is some understanding of what's happening at the system call level. What syscall is generating the EIO in this case? I saw some of the upstream discussion that referenced this bug. If the problems are with readdir(), I wonder if the readdir fixes that have already been queued up for 6.3 will make any difference here. It might be worthwhile to test a current 6.3-ish kernel and see if it helps.
If it does turn out to be reproducible on 6.3-ish kernels, then another thing to test would be to see if it's still reproducible if you mount with '-o nordirplus'.
I have a support call open on this, will they be providing me with a 6.3 kernel to test?
Yes, they should.
I have the same issue from NFS clients running this kernel : 2.6.32-220.2.1.el6.x86_64 (centos 6.2) to a BlueArc Titan 3200 NFS server with mount options : rw,proto=tcp,rsize=32768,wsize=32768,timeo=600,hard,intr,nfsvers=3,sloppy I don't recall having this issue with earlier 6 kernels or 5 kernels
Where's the location of the new test kernels ? There's nothing in http://people.redhat.com/dzickus/rhel6/
Ok, sounds like this was fixed by some patches that are going in for 6.3, so closing this as a duplicate. *** This bug has been marked as a duplicate of bug 770250 ***