Bug 146141
| Summary: | bug in netfs script causes hang on shutdown | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Chris O'Regan <chris> | ||||
| Component: | initscripts | Assignee: | Bill Nottingham <notting> | ||||
| Status: | CLOSED DEFERRED | QA Contact: | Brock Organ <borgan> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 3.0 | CC: | rvokal | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i686 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2005-09-21 21:18:51 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: | 168995 | ||||||
| Attachments: |
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Created attachment 110205 [details]
Patch to fix NFS umount bug in /etc/init.d/netfs
This problem is being considered for the next release of Red Hat Enterprise Linux. Red Hat does not currently plan to provide a resolution for this in a Red Hat Enterprise Linux update for currently deployed systems. With the goal of minimizing risk of change for deployed systems, and in response to customer and partner requirements, Red Hat takes a conservative approach when evaluating changes for inclusion in maintenance updates for currently deployed products. The primary objectives of update releases are to enable new hardware platform support and to resolve critical defects. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041123 Firefox/1.0 Description of problem: It appears that the netfs script was written with the intention to gracefully stop (unmount) NFS file systems. The problem is that the first thing the script does is forcibly unmount the NFS-mounted file systems. As a result, it is unable to terminate any processes that have files open on those file systems. On our servers -- where we use NFS extensively -- this leaves hundreds of processes "stuck" because NFS was pulled out from under them, and the servers fail to shutdown properly, usually requiring a power cycle. We've patched the netfs script so that it gracefully stops all processes with open files on NFS-mounted file systems. It makes four attempts (sending the following signals in this order: HUP, TERM, KILL, KILL) before forcing the umount. Test shows that it works as expected, and our servers shutdown quickly. I'll include the patch as soon as I can figure out where to upload it. Version-Release number of selected component (if applicable): initscripts-7.31.18.EL-1 How reproducible: Always Steps to Reproduce: 1. Start a process that opens a file on an NFS-mounted file system. 2. Shutdown system Actual Results: System hangs on shutdown. Expected Results: System should have shutdown quickly and not required a power cycle. Additional info: