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69 lines
1.7 KiB
Markdown
69 lines
1.7 KiB
Markdown
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---
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title: Unmounting
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layout: default
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created: 2009-01-24 23:09:03 +0100
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updated: 2009-08-13 12:48:35 +0200
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toc: false
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tags:
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- know-how
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- software
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- linux
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---
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sudo
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====
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Using `sudo umount` you can unmount ANYTHING but need `sudo` access.
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fusermount
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==========
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Using `fusermount -u` you can unmount all FUSE mounts.
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pumount
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=======
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Using `pumount` you can unmount all mounts below `/media` which don't appear in `/etc/fstab`.
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Shutdown/Reboot hangs
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=====================
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If there are mounted *cifs* shares, you might encounter a *"CIFS VFS: no response for cmd 50…"* on shutdown or reboot
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which may take about half a minute before the machine actually shuts down (or reboots). This is caused by the network
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being shut down before the shares were umounted.
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The thing is, in Jaunty there already is a script to umount network shares before the network is shut down, but it has
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the wrong start-type of `S` = start. If you look at the script itself, you'll find this:
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{% highlight bash %}
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case "$1" in
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start)
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# No-op
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;;
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restart|reload|force-reload)
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echo "Error: argument '$1' not supported" >&2
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exit 3
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;;
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stop|"")
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do_stop
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;;
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*)
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echo "Usage: umountnfs.sh [start|stop]" >&2
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exit 3
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;;
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esac
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{% endhighlight %}
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So if called with the argument `start`, it will do nothing. It has to be called with `stop`.
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To fix this (in Jaunty):
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* go to `/etc/rc0.d/`
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* find the link `S31umountnfs.sh` (type: S = start)
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* do a `sudo mv S31umountnfs.sh K31umountnfs.sh` (type: K = kill/stop)
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* now go to `/etc/rc6.d/` and do the same to the link there
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You may find some more info on [this blog](http://whereofwecannotspeak.wordpress.com/2007/12/25/unmount-samba-filesystems-before-shutdown-or-reboot/).
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