Re: [Xen-users] Converting AND shrinking domU

["Nick Couchman" <Nick.Couchman@xxxxxxxxx>]

> 
> That has not been my experience. I started with sles10 using ocfs2
with
> sparse files, and they were/are definitely sparse. I still have a
couple
> of the sles10 boxes running. I started with a 300 gb ocfs2 clustered
> between a couple xen servers and had a couple dozen domUs. I had to
add
> a second 300 gb ocfs2 volume as my domUs approached 30. My linux
domUs
> were logically 50gb. My total logical disk space being used on those
two
> 300 gb volumes was 1.3 tb. ïI would use the du -B1 -s commands to
> verify.

Interesting...I'll have to try, again.  Maybe it changed mid-way
through the SLES10 versions or something like that.

> 
> I only know all of this because of all the tracking/moving/recovering
I
> had to do when problems started. I also started tracking sizes in
> planning to go away from ocfs2 and away from spares files. 

Again, I've had none of these issues.  I have four production machines
accessing the same OCFS2 volume and have not ever had an issue with
corruption.  My SAN is FC-attached to these hosts, but I have four more
hosts that I use for development and desktop support that are
iSCSI-attached to an Openfiler SAN, and I've not had any issues with the
iSCSI-attached OCFS2 volume, either.

> 
> Either way, since I've moved most of my domUs off of ocfs2 my
> environment has been much more stable, so I'm almost definitely
getting
> away from ocfs2 and sparse files. 

Interesting how different those experiences can be!

-Nick



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