Release only specific sanlock resource

On august 29 2012, libvirt 0.10.0 has been released which includes the sanlock bugfix when hot-dettaching virtual disks:

http://libvirt.org/news.html

Test puppet code from shell

Sometimes it comes in handy to quickly test some puppet code or conditions from the command line.  The following command greps for ID in a file, and unless found it echoes a string (or does something more useful):

# ralsh exec "/bin/echo ID not found" unless="/bin/grep -q ID /etc/default/mpt-statusd"

If the "unless" command returns "1", the "exec" command is executed.
The inverted situation is covered by "onlyif".  If the "onlyif" command returns "0", the "exec" command will be executed.