[TriLUG] cool underexposed Linux toys - LVM

[Jason White]

* Jason White (jason at jw2.org) [030725 14:37]:
> * 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...

Sure enough - the patch worked like a champ.  Snapshots work just fine
now.

-J