Thankyou. This helps a lot! On Sun, Aug 17, 2008 at 7:20 PM, Filipe Brandenburger <filbranden at gmail.com> wrote: > On Sat, Aug 16, 2008 at 11:30, Mag Gam <magawake at gmail.com> wrote: >> What is the purpose of FSIDs? I am exporting 30 volumes via NFS. Do I >> need a FSID option? > > FSID is needed in NFSv3 if the devices you are exporting may change > minor numbers across reboots. For example, if you have a filesystem on > /dev/sdc1 that you mount and export, if it is always /dev/sdc1 (and > not sometimes /dev/sdd1 depending of having another disk attached > during boot time) you don't need it. However, if you are exporting > filesystems which are mounted on LVM volumes (which will change order > on the next reboot if you create or destroy new logical volumes) you > should set FSIDs explicitly to avoid them changing on the reboot. > > If you don't set the FSIDs explicitly, after a reboot of the NFS > server, you may experience NFS clients that show the contents of a > different filesystem where you formerly had a specific one mounted, or > more frequently you will have your mounted filesystems with "Stale NFS > filehandle" errors. You will have to unmount and remount the > filesystems on all clients to fix these problems. > > HTH, > Filipe > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >