Bug 167571
Summary: | Relocating NFS over TCP exports leaves established TCP/IP connections behind | ||||||
---|---|---|---|---|---|---|---|
Product: | Red Hat Enterprise Linux 4 | Reporter: | Axel Thimm <axel.thimm> | ||||
Component: | kernel | Assignee: | Steve Dickson <steved> | ||||
Status: | CLOSED INSUFFICIENT_DATA | QA Contact: | Cluster QE <mspqa-list> | ||||
Severity: | medium | Docs Contact: | |||||
Priority: | medium | ||||||
Version: | 4.0 | CC: | hgarcia, lhh | ||||
Target Milestone: | --- | ||||||
Target Release: | --- | ||||||
Hardware: | All | ||||||
OS: | Linux | ||||||
Whiteboard: | |||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | Environment: | ||||||
Last Closed: | 2006-10-17 14:42:37 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: | 132823, 167572 | ||||||
Attachments: |
|
Description
Axel Thimm
2005-09-05 18:15:15 UTC
The DUP/ACK storm bug triggered by this one is filed as bug #167572 I've almost got a workaround ready which will stop/start the entire NFS server, while maintaining the ability to define clients using the cluster GUI. The caveat is that it won't be useful if you want to run more than one NFS server in the cluster (assuming two nodes), and it will obviously clobber non-cluster NFS services when nfsd is brought down. This may solve your problem. However, I still have a bit more work to do to make locking work properly (currently, reclaims are not correctly handled). Here's a drop-in agent which you can use instead of <nfsexport> which should work (sans locking for now). Created attachment 119144 [details]
Simple nfs server RA (no UI support for it though).
Assigning to NFS maintainer, but staying on CC list for now. Axel, our NFS maintainer fixed a reference count problem which caused problems during failover, and the fix was released with the most recent kernel errata. While this was not the only problem with NFS failover at the moment, the fix in the latest errata may also fix the TCP connection / dup ACK problems. Can you please reproduce the problem and let us know if it still happens? (this and: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=167572 ) |