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This page is dedicated to the Ubuntu Linux distribution or derivatives
Troubleshoot
When shutting down the PC with Samba (CIFS) shares mounted, the shutdown sequence hangs with the following error messages:
CIFS VFS: server not responding CIFS VFS: no response for cmd 50 mid xxx
This is apparently a bug that is creeping in Ubuntu since a long time ago. Basically there are 2 possible fixes (as in [1], [2], [3]):
The one I use, proposed by Daniel Ellis here [[4]]:
sudo mv /etc/rc0.d/S31umountnfs.sh /etc/rc0.d/K31umountnfs.sh
sudo mv /etc/rc0.d/S40umountfs /etc/rc0.d/K40umountfs
sudo mv /etc/rc6.d/S31umountnfs.sh /etc/rc6.d/K31umountnfs.sh
sudo mv /etc/rc6.d/S40umountfs /etc/rc6.d/K40umountfs
Another one (not tried yet):
sudo ln -s /etc/init.d/umountnfs.sh /etc/rc0.d/K15umountnfs.sh
sudo ln -s /etc/init.d/umountnfs.sh /etc/rc6.d/K15umountnfs.sh