[Bug 388419] [NEW] sshfs mount locked up after suspend

[Bogdan Butnaru]

Public bug reported:

Binary package hint: sshfs

Hello!

I have a server on which most of my media resides, and I'm using SSHFS
to mount its drives on my desktop computer. The commands I use are like
this (tanelorn is the server):

sshfs -o
reconnect,transform_symlinks,allow_other,nonempty,fsname='tanelorn:/mnt/corum'
tanelorn:/mnt/corum /media/corum

This works nicely in general. However, strange things happen after a
suspend: For instance, usually I have Amarok playing in the background;
I pause it before I suspend.

If I resume playing after the computer wakes up, Amarok will keep
playing for a while, then it freezes. (Presumably, when its buffers
empty.) For some reason, the SSHFS mountpoints are in a kind of “frozen”
state. If I try to use them in any other application (open in Nautilus,
ls in terminal), that app freezes too. Unmount doesn't work (it says the
mounts are in use), and I have to kill all SSHFS processes. When I do
that, sometimes the apps will wake up, sometimes they remain frozen;
today Amarok turned unkillable (kill -9 didn't do anything), but while I
wrote this report it disappeared.

After I kill SSHFS I can simply remount and things work OK until the
next suspend.

Another weird thing: For a while I've used afuse to do the SSHFS
mounting. (I've stopped because it interferes with the Nautilus Trash
can.) The strange thing is that after a suspend Amarok behaved
similarly—played whatever it had in the buffer until it exhausted it—but
then it skipped to the next track with no lock-up.

** Affects: sshfs-fuse (Ubuntu)
     Importance: Undecided
         Status: New

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sshfs mount locked up after suspend
https://bugs.launchpad.net/bugs/388419
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