On Friday 06 July 2007 10:55 am, Bernd Schubert wrote:
> On Thursday 05 July 2007 23:42:38 Harald van Pee wrote:
> > On Thursday 05 July 2007 11:23 pm, Bernd Schubert wrote:
> > > Joel Robison wrote:
> > > > Thanks for the quick reply Bernd,
> > > >
> > > > I have not put any valuable data on the filesystem yet, so no worries
> > > > about data loss, just 1.2T of zeros.
> > > > How can I disable extents and mballoc? is it a ../configure option?
> > > > I am away from the machines right now or I would check myself.
> > >
> > > On the OSSs
> > >
> > > 1.) umount {ost-mountpoint}
> > > 2.) tunefs.lustre --mountfsoptions="" /dev/{ost-device}
> > > 3.) mount {ost-mountpoint}
> >
> > would there a big performance loss and if so does the CFS team suggests a
> > patch instead?
>
> Some numbers you might find here:
> http://www.pci.uni-heidelberg.de/tc/usr/bernd/downloads/lustre/performance/thanks for your reply the performance loss is not small, but can I be sure that than do not run into bmalloc related file system crashes? Just to be sure because in the last discussions there are a lot of informations and I'm not sure what I have to do next. > > Patches are in bug#11039 > > > Cheers, > Bernd I have looked into this but there for me its not easy to find out which patch should I realy use for vanilla 2.6.18, some are outdated and I want to avoid to do something wrong. Harald _______________________________________________ Lustre-discuss mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
