Unix: Removing Open Logical Volumes in Centos/RHL

Because I still haven’t remembered to set myself up with a limited-access account for blogging on my new site, I’m back here again. (EDIT: Migrated from old site)

This time is a lot of fun and games with removing an “open” logical volume from within a CentOS environment. The dom0 machine has a set of logical volumes in a volume group for each of the VMs and one of them went and failed dismally, and after its xen destruction (xm destory foo) its LV was left with it being “open”.

It’s not exactly easy to see how …

in Linux · Wed 13 May 2009

Unix: SSH Port Forwarding

So it’s not that special and I bet 1000 people have already posted the same details. Still, it’s cool and I need a place to record my thoughts about this:

ssh host.name -L YYYY:other.host:ZZZZ

Essentially, this means logging into the first machine and creating port YYYY on the local machine as the port ZZZZ from other.host

Works well.

in Linux · Thu 18 December 2008