It's very good that it is fixed in Fedora (my preferred distribution), but it is still wrong in SuSe (verified) and probably more. A better way would be to fix NFS and its utilities itself instead of fixing the distribution. This means, that the way the kernel and nfs-utils interact should be made more robust (see my posting before). Till Am Donnerstag, 4. Dezember 2008 14:59:31 schrieb Steve Dickson: > Dr. Tilmann Bubeck wrote: > > Sorry for the confusion. Maybe I can make myself clearer this time: > > > > Fedora 10 uses the following simplified /etc/init.d/nfs to start the NFS > > server: > > > > 1. exportfs -r > > 2. modprobe nfsd > > This also does (see modprobe.conf.dist): mount -t nfsd nfsd > > /proc/fs/nfsd > > > > As you can read in "man exportfs" there are two modes: "legacy" and "new" > > depending on the existance of /proc/fs/nfsd. The above version of > > /etc/init.d/nfs executes exportfs in lecacy mode and therefore feeds > > /var/lib/nfs/rmtab into the kernel. After "mount -t nfsd ..." the "new" > > mode is used. In this case the previously fed rmtab is disturbing because > > we have a mix of "legacy" and "new" mode. This results in the problem > > that some NFS clients are receiving a "Stale NFS file handle" after a > > server reboot. > > > > I tracked the problem down to the kernel based export table which is > > found in /proc/fs/nfsd/exports. The above start order results in: > > > > root# cat /proc/fs/nfsd/exports | grep dhcp-10-1-1-209 > > /home > > dhcp-10-1-1-209.loef.reinform.de(rw,root_squash,sync,wdelay,no_subtree_ch > >eck,fsid=1510) > > > > which results from "exportfs -r" reading rmtab and feeding into the > > kernel. > > > > By changing the start order to: > > > > 1. modprobe nfsd > > This also does (see modprobe.conf.dist): mount -t nfsd nfsd > > /proc/fs/nfsd 2. exportfs -r > > > > then "exportfs -r" starts in "new" mode and does not feed the rmtab into > > the kernel. > > This has been fixed in both Fedora 9 and 10... The update nfs-utils version > should be hitting a yum repository near you soon... > > steved. -- +-------+-------------------------------------------------------------+ | | dr. tilmann bubeck reinform medien- und | | | informationstechnologie AG | | rein | fon : +49 (711) 7 82 76-52 loeffelstr. 40 | | form | fax : +49 (711) 7 82 76-46 70597 stuttgart / germany | | AG | cell.: +49 (172) 8 84 29 72 fon: +49 (711) 75 86 56-10 | | | email: t.bubeck@xxxxxxxxxxx http://www.reinform.de | | +-------------------------------------------------------------+ | | pflichtangaben nach paragraph 80, AktG: | | | reinform medien- und informationstechnologie AG, stuttgart | | | handelsregister stuttgart, HRB 23001 | | | vorstand: dr. tilmann bubeck (vorsitz), dr. tommy kuhn | | | aufsichtsrat: frank stege (vorsitz) | +-------+-------------------------------------------------------------+ -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
