On Tue, Apr 6, 2010 at 12:37 AM, Craig Ringer <cr...@postnewspapers.com.au> wrote:
[snip] > > Is this insane? Or a viable approach to tackling some of the > complexities of faking tape backup on disk as Bacula currently tries to do? > I love Bacula and have been working hard to promote it to people I know. The biggest problem with bacula is it's disk management. We have a DataDomain box that is getting horrible dedup rate and after looking at the Bacula tape stream format, I can understand why. There is so much extra data inserted into the stream that is very helpful for tape drives that it makes deduping the data nearly impossible. I would love to see the stream simplified for disk based storage. Another thing I'd like the option for is to be able to specify a block size and start a file on the block boundry, you could use sparse files to skip the space without taking it up. This would allow dedup algorithms to really be able to compress Bacula data much better. It would be awesome if the file stored in the Bacula stream looked exactly like on the file systm so that if you do any tier 3 storage with dedup and run your Bacula backups to the same storage, you get free backups. Dedup is gaining a lot of traction, name your favorite vendor, or as I'm doing look at lessfs. All of these would benefit hugely from a smart SD that knows how to handle disk storage better and make Bacula much more attractive. With the types of backups we are doing, we should be getting 10x easy on our DataDomain, but we are lucky to get 4x and I think that mostly comes from compression. Thanks, Robert LeBlanc Life Sciences & Undergraduate Education Computer Support Brigham Young University ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
