[OpenAFS] Migrating existing data onto vice partition on the fly
Tue, 30 Dec 2014 17:08:27 +0100
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Am Dienstag 30 Dezember 2014, 16:45:27 schrieb Levente Peres:
> Hello Jeff,
> Thank you for answering.
> I might have been a little obscure... I'll try to clear this up for y=
> So... Right NOW I have a partition called /vicepa, which exists right=
> now, and has an XFS volume, which is used actively. It has some
> terabytes of data and about 2.5 times of free space as the actual dat=
Why did you mount it as /vicepa at all? It's not an AFS partition.
> This data has to be migrated within the same server to AFS.
Why same server? An AFS setup usually consists of several servers, espe=
if you want to serve terabytes of data. Not to mention the needed kerbe=
> Unfortunately, I have only this "one" partition remotely big enough t=
> hold the data and/or fast enough to handle in a reasonable amount of =
Fast enough for what? To copy over the data or to serve it afterwards?
> My idea was based on the following: Somewhere I remember reading, tha=
> it would be OK to have "AFS filesystem data" and "normal files" coexi=
> on the same partition for a while, if I watched carefully not to run =
> of space. This may or may not be true - it was a long time.
Yes, it could work, but you should definitely test it on a spare machin=
> So my original concept was that I would create the AFS filesystem on
> "top" of the "existing data" on the /vicepa partition, then copy it o=
> to the cell's logical mount, then just delete the "old" data and have=
> "pure" AFS partition left after.
You should also plan to divide the data into logical chunks that you ca=
on different AFS volumes (even if you stay on your single server), as i=
make backups or migration of your data to other /vicepX partitions (may=
other AFS servers) easier.
Dirk Heinrichs <email@example.com>
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