| Summary: | fedora 14 nfs client stops working randomly - kernel backtrace raw_local_irq_restore _raw_spin_unlock_irqrestore | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Edgar Hoch <edgar.hoch> | ||||||
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||||
| Status: | CLOSED INSUFFICIENT_DATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||
| Severity: | high | Docs Contact: | |||||||
| Priority: | unspecified | ||||||||
| Version: | 14 | CC: | e.grammatico, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, steved | ||||||
| Target Milestone: | --- | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | x86_64 | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2011-10-11 20:01:16 UTC | Type: | --- | ||||||
| Regression: | --- | Mount Type: | --- | ||||||
| Documentation: | --- | CRM: | |||||||
| Verified Versions: | Category: | --- | |||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||
| Attachments: |
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Created attachment 486637 [details]
Kernel backtrace messages from /var/log/messages from another host
Attached is another kernel backtrace from another host. It seems also related to nfs. Is there a deadlock in the kernel?
Are you still seeing this with the latest f14 kernel? at this stage in its lifecycle, f14 isn't going to get any significant NFS changes other than security related patches. If you can reproduce this problem with f15 or newer, please reopen. |
Created attachment 486533 [details] Kernel messages from /var/log/messages Description of problem: We use fedora 14 x86_64 on servers and pcs which mount nfs file systems from other servers. It happens from time to time that a server or pc, which are nfs clients, stops working. Then we cannot login via ssh and cannot do local work - any access to a nfs mounted directory "hangs" - waiting to recieve the nfs data forever. The problem occurs on fedora 14 nfs clients, it occurs randomly - sometimes all works fine and later all nfs access either hangs or get an i/o error. As I can see using tcpdump, strace etc. the nfs access doesn't create nfs network traffic when the error occurs - so I think the problem is in the nfs client - in the kernel as this code is part of the kernel. It occurs with nfs v3 and v4 and with different nfs servers and different nfs server operating systems. Most of the time we got not error messages when the computer is not working any more. But now I found kernel backtraces in /var/log/messages after I had hard resetted the server (a nfs client). So I hope this will help to solve the problem when I report this kernel messages. Version-Release number of selected component (if applicable): kernel-2.6.35.11-83.fc14.x86_64 nfs-utils-1.2.3-5.fc14.x86_64 nfs-utils-lib-1.1.5-3.fc14.x86_64 nfs4-acl-tools-0.3.3-6.fc13.x86_64 How reproducible: It occurs randomly. I don't know how to reproduce - it happens sometimes and sometimes not. Actual results: Fedora 14 system with nfs client (for homes, /usr/local, /mount/* etc. automouted) sometimes stops working. Only hard reboot via hardware reset helps. Expected results: Fedora 14 system with nfs client (for homes, /usr/local, /mount/* etc. automouted) should run without failure.