On Tue, Jul 19, 2016 at 12:49 AM, Adam Carter <adamcart...@gmail.com> wrote: > > I'm trying to troubleshoot a newly setup nfs server, which, sometimes has a > 30 second pause (tcpdump shows its server waiting). > > # time touch /usr/portage/distfiles/testfile > > real 0m30.088s > user 0m0.000s > sys 0m0.001s > > I cant see anything in the nfs server debugging so i want to strace nfsd. > First i tell it to use single thread so i know i;m stracing the correct > thread, but; > > # grep OPTS_RPC_NFSD nfs > #OPTS_RPC_NFSD="8 -N2 -V 3 -V 4 -V 4.1" > OPTS_RPC_NFSD="1 -N2 -V 3 -V 4 -V 4.1" > # systemctl restart nfs-server > # pgrep -lf nfsd > 23546 nfsd4_callbacks > 23548 nfsd > 23549 nfsd > 23550 nfsd > 23551 nfsd > 23552 nfsd > 23553 nfsd > 23554 nfsd > 23555 nfsd > > So its not respecting the nproc setting. Any ideas? I also tried changing > EXPORTFS_TIMEOUT= since its currently set at 30. It didnt help, but perhaps > that's because its being ignored too.
Are the nfsd versions that you're setting being respected? You can check with "rpcinfo -s" or "cat /proc/fs/nfsd/versions". You can change the number of threads on the fly with "echo 1 > /proc/fs/nfsd/threads". I don't use systemd on Gentoo but for the nfs-utils upstream-shipped systemd units that I think that Gentoo's using, you have to re-run nfs-config.service - or run the script that it calls - in order to update the "/run/sysconfig/nfs-utils" environment file that's sourced by the nfs-server.service unit. Does "/var/lib/nfs/v4recovery/" exist? Does adding the client to "/etc/hosts" - or to your reverse dns zone - eliminate the delay?
