quick reply, I´ll send you the full details monday. I am heading off for a couple of days of vacation + weekend.. i am not ignoring the question :)
Fabio On 5/16/2012 8:19 PM, Colin Simpson wrote: > This is interesting. > > We very often see the filesystems fail to umount on busy clustered NFS > servers. > > What is the nature of the "real fix"? > > I like the idea of NFSD fully being in user space, so killing it would > definitely free the fs. > > Alan Brown (who's on this list) recently posted to a RH BZ that he was > one of the people who moved it into kernel space for performance reasons > in the past (that are no longer relevant): > > https://bugzilla.redhat.com/show_bug.cgi?id=580863#c9 > > , but I doubt this is the fix you have in mind. > > Colin > > On Tue, 2012-05-15 at 20:21 +0200, Fabio M. Di Nitto wrote: >> This solves different issues at startup, relocation and recovery >> >> Also note that there is known limitation in nfsd (both rhel5/6) that >> could cause some problems in some conditions in your current >> configuration. A permanent fix is being worked on atm. >> >> Without extreme details, you might have 2 of those services running on >> the same node and attempting to relocate one of them can fail because >> the fs cannot be unmounted. This is due to nfsd holding a lock (at >> kernel level) to the FS. Changing config to the suggested one, mask the >> problem pretty well, but more testing for a real fix is in progress. >> >> Fabio >> >> -- >> Linux-cluster mailing list >> Linux-cluster@redhat.com >> https://www.redhat.com/mailman/listinfo/linux-cluster > > > ________________________________ > > > This email and any files transmitted with it are confidential and are > intended solely for the use of the individual or entity to whom they are > addressed. If you are not the original recipient or the person responsible > for delivering the email to the intended recipient, be advised that you have > received this email in error, and that any use, dissemination, forwarding, > printing, or copying of this email is strictly prohibited. If you received > this email in error, please immediately notify the sender and delete the > original. > > > -- > Linux-cluster mailing list > Linux-cluster@redhat.com > https://www.redhat.com/mailman/listinfo/linux-cluster -- Linux-cluster mailing list Linux-cluster@redhat.com https://www.redhat.com/mailman/listinfo/linux-cluster
