[linux-lvm] LVM Snapshots for remote archiving.
freemyer-ml at NorcrossGroup.com
Thu Jan 29 11:52:02 UTC 2004
On Wed, 2004-01-28 at 14:04, Chris Beck wrote:
> >I don't think that is a trivial issue, and I think the code would have
> >to implemented in the kernel.
> Why the kernel? ... surely reading the flag tables could be done in user
> space? I think you have the necessary logic spot on.
I don't think the COW flag table is accessible from userspace, but I
could be wrong.
FYI: I am a LVM user, not a developer.
> >New code would also have to be developed to apply the above blocks.
> Hmmm. I can mess around in perl and java as well as the next guy, but
> my c-fu is weak, very weak. How much would it cost to sponsor someone
> to do this do you think?
I don't have any idea. If your serious, I would recommend doing it with
LVM 2 (requires DM in the kernel), since DM is part of 2.6.x vanilla and
2.6.x will not likely ever support LVM 1.x.
In that case, I would post on the dm-devel list. There seem to be a few
non-Sistina people that are very knowledgable and post regularily.
FYI: Since Sistina is in the process of being bought by Redhat, I doubt
they would consider a new project (or sub-project) right now.
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