I have been working on my server, from which I export one directory using NFS.
Of course over the week or so of server reboots, I multiple times forgot to umount
the export filesystem in my workstation (which gets mounted from /etc/fstab
on boot). In between I was able to umount
after the fact and remount (I am not using autofs
):
umount -fl /data0
mount /data0
But this no longer works.
I cannot mount the exported directory from the server on a different directory (mount hangs), but I can nfs mount that exported dir on a virtual machine running on my workstation.
What I tried is removing (rmmod
) the nfs
and nfsv3
module (which would not work: Resource temporarily unavailable
). lsof
hangs. mount
doesn't show anything mounted via nfs
. This is all probably a result of using 'umount -l' multiple times, but the first two times this worked without a problem.
I have restarted the server in the mean time, after not being able to mount without that making any difference. I also used service nfs-kernel-server restart
. I suspect everything would be back to normal if I restart the client workstation.
Is there a way to recover from this and reinitialise the nfs client side on my workstation without a reboot?
If I cannot fix this without reboot, would this not reoccur if I start using autofs
?
lsof -b
hangs with as last lines:
lsof: avoiding readlink(/run/user/1001/gvfs): -b was specified.
lsof: avoiding stat(/run/user/1001/gvfs): -b was specified.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1001/gvfs
Output information may be incomplete.
in the lines preceding that, there is no /data0
.
The entry in /etc/fstab
:
192.168.0.2:/data0 /data0 nfs defaults,auto,nolock,user 0 2
lsof -b
hang?upstart
and all. You probably want to restart all the services in thenfs-common
package, looks like there are a few. Order likely matters as well, so try stopping then starting in order of dependency. You probably also want to dorpcbind
as your last stop/first start. I have done this before on Debian, but it just has one nicenfs-common
service.