[Bug 974374] Re: Error on unmounting a NFSv4 share

[Brian Candler]

I think the remote volume with/without leading slash is different to the
\040(deleted) problem. I have a machine in the latter state:

# grep monster3 /etc/mtab
192.168.6.117:/share /media/monster3 nfs4 rw,noatime,addr=192.168.6.117,clientaddr=192.168.6.110 0 0
# grep monster3 /proc/mounts
192.168.6.117:/share /media/monster3\040(deleted) nfs4 rw,noatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=192.168.6.110,minorversion=0,local_lock=none,addr=192.168.6.117 0 0
# umount /media/monster3
/media/monster3 was not found in /proc/mounts
/media/monster3 was not found in /proc/mounts
root at proliant:~# umount /media/monster3
root at proliant:~# umount "/media/monster3 "
umount: /media/monster3 : not found
root at proliant:~# umount "/media/monster3 (deleted)"
umount: /media/monster3 (deleted): not found

I tried some variations of editing what's in /etc/mtab, adding \040 or
\040(deleted), and variations of what I pass to umount, to no avail.

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https://bugs.launchpad.net/bugs/974374

Title:
  Error on unmounting a NFSv4 share

Status in “util-linux” package in Ubuntu:
  Confirmed

Bug description:
  When unmounting an NFSv4 share I get the following error message:
  [mntent]: line <nr.> in /proc/mounts is bad

  The umount seems to succeed though.

  Package Info:
  nfs-common  1:1.2.5-3ubuntu2
  Linux 3.2.0-22-generic

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