[Bug 164120] Re: file manager hangs when mounted nfs drive is no longer accessible

[Evan Carroll]

Here is the strace, we can see the two calls to readlink which has the actual path.. A simple `ls` in the directory fails /mnt hangs without even running umount. This is what I assume is the core of the nautilus symptom people are ranting about. I think this is also why nfs drives can't umount when disconnected. I don't know why umount has to ls the parent directory to umount the location. I can understand it doing so, but I'd expect it the -f option to just purge the kernel's knowledge of the mount point and move on with life. That `umount -f` issues an readlink() in cwd, and that an ls with failed mount hangs is what I assume is the problem here.
, 
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2630b74000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tr"..., 1024) = 365
read(3, "", 1024)                       = 0
close(3)                                = 0
munmap(0x7f2630b74000, 4096)            = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2919792, ...}) = 0
mmap(NULL, 2919792, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f262f610000
close(3)                                = 0
umask(022)                              = 022
getuid()                                = 0
geteuid()                               = 0
readlink("/mnt", 0x7fff2a645120, 4096)  = -1 EINVAL (Invalid argument)
readlink("/mnt/nfs",

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https://bugs.launchpad.net/bugs/164120

Title:
  file manager hangs when mounted nfs drive is no longer accessible

Status in File Manager for KDE:
  Incomplete
Status in Thunar file manager:
  Unknown
Status in Thunar Virtual File System:
  Confirmed
Status in “nautilus” package in Ubuntu:
  Confirmed
Status in “nfs-utils” package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: nautilus

  I am using ubuntu 7.10, Gutsy 386 version.

  I am using a laptop which I use to in home and office. At home I am
  having network drive which mounted through nfs in home.

  I normally put my laptop to suspend and then bring over the same to
  work. When I access nautilus in this case, it just simply hangs it
  does not open any folder neither from Places or directly typing
  command nautilus.

  This is very annoying as I have to reboot the computer just for
  nautilus hanging.

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