On Wed, Nov 12, 2014 at 11:18:54AM +0100, Harald Barth wrote: > > Do you have an existing backup system (for example for other stuff > than AFS) and are you allowed to put data into that? In that case, > what kind of system do you have? > > We do in effect (hiding all the gory stuff): > > ... Hilarious script ... > ... Hilarious script ... > ... Hilarious script ... > vos dump VOLUMENAME | tsmpipe /some-prefix/VOLUMENAME.DUMPLEVEL.DATE > > which makes "files" in TSM which in effect are volume dumps.
Belatedly chiming in with my own $0.02 from our cell. We use a similar strategy and the Venti CAS archival server from Plan 9 (as ported to *nix userland) for backing store (being a CAS, it's all deduping, which is wonderful). We have found that passing the dumps through a ``rabin fingerprint splitter'' script helps immensely, as the dump data is not block-aligned internal to the dump file. Our setup is documented (mostly) at https://www.acm.jhu.edu/~admins.pub/systems/afs-venti.html, and all the scripts are available in /afs/acm.jhu.edu/readonly/group/admins.pub/scripts/chicago (in particular, rabinsplit.c, dump-to-venti.sh, and dump-all-to-venti.sh). Cheers, --nwf;
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