Bug 526888
| Summary: | NFSv4 reclaimer thread in an infinite loop | ||||||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | Sachin Prabhu <sprabhu> | ||||
| Component: | kernel | Assignee: | Sachin Prabhu <sprabhu> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Red Hat Kernel QE team <kernel-qe> | ||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | urgent | ||||||
| Version: | 5.4 | CC: | aleksey, dhoward, dzickus, jlayton, jpirko, jtluka, marcus, rwheeler, simone, steved, tao, wezhang | ||||
| Target Milestone: | rc | Keywords: | OtherQA, ZStream | ||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2010-03-30 06:58:21 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 526950, 529162 | ||||||
| Attachments: |
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Description
Sachin Prabhu
2009-10-02 11:31:36 UTC
Created attachment 363463 [details] proposed fix Patch backported from http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=027b6ca02192f381a5a91237ba8a8cf625dc6f6a This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. in kernel-2.6.18-169.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5 Please do NOT transition this bugzilla state to VERIFIED until our QE team has sent specific instructions indicating when to do so. However feel free to provide a comment indicating that this fix has been verified. I am using kernel-2.6.18-191 but this happens regularly in the following setup: Solaris 10 NFS server Centos 5.4 Linux client relevant /etc/fstab line: server:/storage nfs4 bg,intr,nosuid,actimeo=2,rsize=8192,wsize=8192 the low actimeo it's because the server changes metadata that the clients must see asap. Simone, You may be seeing a different problem. To confirm that you see this problem, the next time you see the hang echo w >/proc/sysrq-trigger a few times with a second's interval between each call. You need to check for a process which has the name set to the ip address of the nfs server. The back trace seen should be similar to the one seen in c#1. Sachin Prabhu Sachin, I can already confirm the process presence. I can't exactly say about the stack trace now, I'll try to get one if and when the problem arises again (we stopped using that architecture for the critical projects and reversed using an older way of doing things). The machine slowly fades into what effectively is an hang (while it is not, because it pings) An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2010-0178.html |