On Monday 13 February 2006 22:44, Andrew Zahn wrote: > Hi All, > > I am looking for advice on how to cure a constantly-crashing NFS server > which crashes every few hours, or at least, every few days. The kernel > log file (below) points toward NFS as a likely cause. > > The system disk is a 3ware 8000 series RAID1 mirror. The data disk is > using a 3Ware 9000 controller to produce two RAID1 devices; these are > then striped (RAID0) in software to form a RAID 10 device. We're using > a 2.6 kernel, xfs filesystem, and NFS3/UDP. > > We're running CentOS 4.2 with a 2.6.9-22.0.1.106 kernel. This kernel > has xfs extensions, and we're running the xfs filesystem for /home One thing to consider is that the xfs module in current centosplus kernels is the same as kernel.org 2.6.9, that is, ancient. I never got 2.6.9 xfs stable for non-trivial loads and configurations. /Peter > (obtained from CentOS website). > > In "lsmod" I see both 3w_xxxx and 3w_9xxx modules. > > NFS is over UDP, jumbo frames (9000), 32k rsize/wsize, async server, > async clients, noac. > > This system has been serving /home in this configuration since October > 2005; we've seen it crash rarely, but uptimes were usually on the order > of months. This past week, it can't seem to remain up for much longer > than about a day. > > Kernel log file containing the crash: > ... -- ------------------------------------------------------------ Peter Kjellström | National Supercomputer Centre | Sweden | http://www.nsc.liu.se -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20060214/b240b493/attachment-0005.sig>