On Tue, Oct 22, 2013 at 09:25:40AM +0000, Colin Simpson wrote: > On Tue, 2013-10-22 at 10:24 +0200, Lars Marowsky-Bree wrote: > > On 2013-10-21T15:58:18, Alan Brown <a...@mssl.ucl.ac.uk> wrote: > > > > > As anyone who's tried to use kernel NFS in a clustered environment knows, > > > it's fraught with issues which risk severe data corruption. > > > > Is it? How so? > > > > > > Regards, > > Lars > > > > -- > > Architect Storage/HA > > SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix > > Imendörffer, HRB 21284 (AG Nürnberg) > > "Experience is the name everyone gives to their mistakes." -- Oscar Wilde > > > The only thing I know about (and has bitten me) is that a GFS2 > filesystem isn't allowed to be exported on NFS and perform local access > on it (e.g. Samba). Bad interaction between flocks (NFS) and plocks and > the GFS2 glocks. The interaction on other filesystems between plocks and > flocks could lead to file corruption. But in GFS2 this can and does lead > to whole filesystem corruption. There is a bug open about it, but it's a > tricky problem.
What's the bz #? --b. > I have a Red Hat information on this, not sure if it can > be passed on. > > I guess a user space NFS would fix that. And IMHO would be easier to > manage as all filesystem access would be in userspace (so potentially > more stable on NFS server issues (complexity moved out of kernel > space)). > > Thanks > > Colin > > > ________________________________ > > > 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
