Hi Adam, do you have any scripts available that you'd be willing to/allowed to share? I'd highly appreciate that.
To all list members: Even though I didn't ask for it initially, are there any good tutorials for using both OpenAFS's backup cmd as well as vos dump/vos restore? Thanks in advance for any info! Kind regards, Holger On Sat, 19 Dec 2009, Adam Megacz wrote: > > Russ Allbery <r...@stanford.edu> writes: > >> You can get remarkably good compression by using xdelta3 on dump > >> files. > > > Don't you have to do full dumps in order to calculate the xdelta3 > > differences? > > I pipe the output of "vos dump" directly to xdelta3, so the full dump > never hits the disk. If you perform the dump and diff on the > fileserver itself, then the network traffic is also proportional to > the size of the diff (rather than the size of the whole dump). You > can then send the diff over the network to secondary storage. > Secondary storage needs to keep a copy of the full dump and reapply > the diff, so the amount of effort is proportional to the size of the > dump, but the network traffic is proportional to the diff. > > It takes a few tries to set it up, but works really smoothly once > you've got it going. IMHO it's the best incremental backup solution > for AFS that doesn't involve the risk of your proprietary software > suddenly becoming unsupported. > > The ideal situation would be to have the volserver emit an RFC3284 > file directly using its knowledge of which file blocks have changed > since a given date. This would give you block-granularity incremental > dumps instead of the file-granularity dumps without inventing a new > dump format; just use an RFC3284-of-dumpfiles. > > - a > > _______________________________________________ > OpenAFS-info mailing list > OpenAFS-info@openafs.org > https://lists.openafs.org/mailman/listinfo/openafs-info -- ========================================= Holger Rauch Entwicklung Anwendungs-Software Systemadministration UNIX Tel.: +49 / 9131 / 877 - 141 Fax: +49 / 9131 / 877 - 266 Email: holger.ra...@empic.de =========================================
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