[TriLUG] cool underexposed Linux toys - LVM

[Jason White]

* Magnus (chrish at trilug.org) [030725 01:46]:

> On Friday, July 25, 2003, at 01:36  AM, Jason White wrote:

> >Shrinking reiserfs has worked fine for me under Debian and the
> >standard command-line LVM utils (unmounted partition first).

> Let me ask you this... under Debian can you create a snapshot of an LV 
> and then mount the snapshot?

> I can't seem to do that under any stable version of Red Hat through 9.  
> No, I haven't tried Severn.  It's a known bug with Red Hat (according 
> to Bugzilla, but no response from RH to it yet) but I'm wondering if 
> the other distros can do this or not.

What what I can tell, you must apply the linux-2.4.x-VFS-lock patch,
if you want to use snapshots w/ reiserfs.  I just tried to create a
simple snapshot, and it would not mount.  It was created successfully, 
but trying to mount it failed with errors about a bad superblock, etc.

http://www.tldp.org/HOWTO/LVM-HOWTO/x298.html

I'm going to patch my kernel to see if that's the only thing
required...

-J