[OpenAFS-devel] vos dump busying out the volume while dumping...

[Neulinger, Nathan]

I think that if you created it as a clone on the same partition, it
would work fine, but whenever you move the parent volume, or move the
clone, it would cease to be a clone.  I don't think anything actually
cares if a clone exists, since it all does CopyOnWrite for all changes.

I figured on a "vos copy volname server part volname server part" with
server and partition defaulting reasonably.

Would be nice if there were some reasonable way to do a "vos merge
server part vol1 vol2" that would recombine a couple of volumes.
Unfortunately, that would likely be a fairly expensive operation, since
it would have to compare every file in a pair of volumes. Without that
though, as soon as you had multiple clones, you couldn't move the
volumes to a different server without using X * quotaused.=20

Adding a "vos copy" routine should be relatively easy to do.=20

-- Nathan

------------------------------------------------------------
Nathan Neulinger                       EMail:  nneul@umr.edu
University of Missouri - Rolla         Phone: (573) 341-4841
Computing Services                       Fax: (573) 341-4216


> -----Original Message-----
> From: Michael Niksch [mailto:nik@zurich.ibm.com]=20
> Sent: Wednesday, October 23, 2002 12:40 PM
> To: openafs-devel@openafs.org
> Subject: Re: [OpenAFS-devel] vos dump busying out the volume=20
> while dumping...
>=20
>=20
> So something like
>=20
>   vos move ... -copy <new volume name>
>=20
> which would create a copy on the same or some other server:partition,
> but give it a different name and keep the original around?
> Unfortunately, even if it were on the same server:partition, it
> couldn't just be a clone if you cannot track it in the vldb, right?
>=20
> --=20
> Michael Niksch                     /Zurich/IBM @ IBMCH
> IBM Zurich Research Laboratory     nik@zurich.ibm.com
> Saeumerstrasse 4                   http://www.zurich.ibm.com/~nik/
> CH-8803 Rueschlikon / Switzerland  P: +41-1-724-8913 F: +41-1-724-8080
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>=20