Hi Trond, On Sun, Jan 10, 2010 at 8:08 PM, Trond Myklebust <trond.myklebust@xxxxxxxxxx> wrote: > On Sat, 2010-01-09 at 14:32 +0000, Daniel J Blueman wrote: >> When synchronising files (unison, like a two way rsync) over an NFS4 >> mount (server with 2.6.32.2) on a client running 2.6.33-rc3 (also >> -rc2), I ran into dcache issues [1]. >> >> I've been unable to consistently reproduce this for bisecting, and >> filesystem benchmarks via NFS on tmpfs over localhost fails to >> reproduce it either. >> >> What additional information may be useful? > > There is a known issue in 2.6.33-rc3 with rename causing corruption of > the dentry lookup hash lists. > > A fix for that problem has already been merged into mainline as > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git&a=commitdiff&h=56335936de1a41c8978fde62b2158af77ddc7258 > > Could you see if you can reproduce your problem with that fix applied? 2.6.33-rc4 with the fix does address this issue, though I am now occasionally seeing 'Stale NFS file handle' during parallel kernel compilation over NFS4 [1], seemingly when stat(2) is called. Client mount options are: x1:/ /net nfs4 rw,relatime,vers=4,rsize=262144,wsize=262144,namlen=255,acregmin=30,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=192.168.10.2,addr=192.168.10.250 0 0 I'll see which -rc this was introduced in, from limited time. Thanks, Daniel --- [1] $ CONCURRENCY_LEVEL=4 fakeroot make-kpkg --append-to-version -308cd --initrd kernel-image ... CC [M] drivers/net/wireless/rt2x00/rt2500usb.o CC [M] drivers/net/wireless/rt2x00/rt73usb.o CC [M] drivers/net/wireless/rt2x00/rt2800usb.o LD [M] drivers/net/wireless/rt2x00/rt2x00lib.o Building modules, stage 2. make[2]: stat: arch/x86/crypto/aes-x86_64.o: Stale NFS file handle make[2]: stat: arch/x86/crypto/aesni-intel.o: Stale NFS file handle make[2]: stat: arch/x86/crypto/salsa20-x86_64.o: Stale NFS file handle make[2]: stat: arch/x86/crypto/twofish-x86_64.o: Stale NFS file handle make[2]: stat: arch/x86/kernel/cpu/cpufreq/p4-clockmod.o: Stale NFS file handle make[2]: stat: arch/x86/kernel/cpu/cpufreq/speedstep-lib.o: Stale NFS file handle .... -- Daniel J Blueman -- 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
