On 07/26/2017 11:37 PM, NeilBrown wrote: > Weird. I thought so as well. > So it seems like the context is different in some way. It is in the sense that I am now using 1.3.4 and 2.1.1 vanilla on Ubuntu Xenial(provides 1.2.8) without any of debian's patches or niceties. > Your nfs_test_notes.txt doesn't show /etc/export.d getting filled in > ... maybe that it done automatically somehow... I copied the files from the original NFS server into /etc/exports.d as part of the VM snapshot I revert back to. My notes say 'mkdir -p /etc/exports.d', but this step is not necessary. root@nfsserver:~# ls /etc/exports.d/ | wc -l 972 I only added 3 extra files so that 'nfsclient' would be able to mount from the testing server (nfsserver). The ZFS datasets were also precreated: root@nfsserver:~# zfs list | wc -l 6062 > Can you try with unpatches 2.1.1? I assume you mean without any patches. vanilla 2.1.1 > Also maybe provide an strace starting before any attempt to mount > anything, and with an extra option "-s 1000".. This is all that happens *before* trying to mount from the client. root@nfsserver:~# systemctl restart nfs-server; exportfs -f; m=$(pgrep rpc.mountd); strace -s 1000 -ttt -T -p $m 2>&1 | tee strace_rpc.mountd2.txt strace: Process 2517 attached 1501190436.659800 select(1024, [3 4 5 7 8 9 10 11 12 13 14 15 16 17 18], NULL, NULL, NULL Stracing rpc.nfsd: root@nfsserver:~# exportfs -f; strace -s1000 -ttt -T /usr/sbin/rpc.nfsd 0 2>&1| tee strace_nfsd.txt; /usr/sbin/sm-notify http://people.cs.uchicago.edu/~kauffman/nfs-kernel-server/take3/strace_rpc.nfsd.txt When mounting from the client I get a strace that is 1.3G (it seems '-s' was not respected for some reason): http://people.cs.uchicago.edu/~kauffman/nfs-kernel-server/take3/strace_rpc.mountd.txt -- Phil Kauffman Systems Admin Dept. of Computer Science University of Chicago kauffman@xxxxxxxxxxxxxxx -- 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
