Force unmount??

[timo]

Is there any method of forcibly umounting an NFS mounted directory?

We have a test environment managed under puppet that is also our DR environment. In a DR scenario we'll be umounting all NFS shares from out test array and remounting to our DR array. 

However, as this is a test environment we have users logged on, so when Puppet attempts to unmount the test directories, it fails with "umount: /test/dir: device is busy" if I fuser against the /test/dir directory and kill the PID all is OK. 

I need a method of either forcibly umounting the array, or killing all PID's using the mounted directores so Puppet can unmount them. I'd like all this done from Puppet.

Any ideas? 

[Jo Rhett]

On Oct 8, 2012, at 5:38 AM, timo wrote:

I need a method of either forcibly umounting the array, or killing all PID's using the mounted directores so Puppet can unmount them. I'd like all this done from Puppet.

Any ideas? 

http://docs.puppetlabs.com/references/latest/type.html#exec

-- 

Jo Rhett

Net Consonance : net philanthropy to improve open source and internet projects.

[jcbollinger]

Jo's is probably the best available approach.

The main alternative I see would be to write and use a custom provider for the Mount resource type, but I'm not at all convinced that the cost/benefit on that would even come close to justifying it.


John

[timo]

Thanks for the replies. 

I created a module and made it a 'requires' of mount.pp, The exec subscribes to a text file that holds the current environment (test/production) then kills any PID's 'onlyif' lsof -N returns a 0. So in the event of DR, puppet can unmount and remount without a problem. Dirty but it works.

Cheers,