Bug 337981
| Summary: | VFS: Busy inodes after unmount following NFS problems | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | Bob Gautier <rgautier> |
| Component: | kernel | Assignee: | Steve Dickson <steved> |
| Status: | CLOSED DUPLICATE | QA Contact: | Martin Jenner <mjenner> |
| Severity: | high | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 5.2 | CC: | chet.burgess, dzickus, imcleod, jlayton, sghosh, staubach, steved, tkramer |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | GSSApproved | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-01-24 20:51:17 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: | 424251 | ||
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. *** This bug has been marked as a duplicate of 253663 *** |
Description of problem: Following some trouble with remote NFS (v3) file systems, the machine crashed having logged the following message: VFS: Busy inodes after unmount of 0:1f. Self-destruct in 5 seconds. Have a nice day... Version-Release number of selected component (if applicable): kernel 2.6.18-8.el5 How reproducible: This was a single crash, probably provoked by very special circumstances Steps that led to the crash: User tries to access a stale NFS mount: cd /path1 The user tried to clear the stale mount by unmounting: umount /path1 This failed with 'device is busy'. Locating the processes that were keeping the stale mount busy, the user tried to kill them, eventually resorting to kill -9 pid... The processes went away and umount /path1 succeeeded. The filesystem was then remounted: mount server:/path/to/files /path1 The original job could then be performed, and the file system unmounted: cd /path1 # do stuff... umount /path1 Another NFS filesystem was then mounted: mount server:/path/to/more/files /path2 Files were written to the /path2 tree without error Finally, the user did: cd /path2/OS/ createrepo ... At this point, the machine crashed. We don't know when the 'have a nice day' message was logged relative to the crash.