Hi list, I don't seem to find as much time for posting on this list lately as I'd like to. Since that won't change for at least two weeks, I'll write a few short comments now. Please excuse me for being a bit terse about it and only providing some keywords. I hope others will follow up with more information.
Let's start with this thread (but it applies to others as well). Angus Scott-Fleming wrote on 2009-08-17 12:57:14 -0700 [Re: [BackupPC-users] Feature Requests and such?]: > On 16 Aug 2009 at 14:11, Michael 'Moose' Dinn wrote: > > > > another unit offsite. The extensive use of hardlinks prevents > > > rsync from being the right solution here. > > > > rsync -H doesn't work for you? I fully agree that it doesn't scale, but the point is valid that it *could* work for you now. The only way to see if it does is to try it out. > From earlier discussions on the list: > > Re: [BackupPC-users] backup of backup machine > "Note that using -H to reconstruct hardlinks only works for links among > the files traversed during a single rsync run." > http://www.mail-archive.com/backuppc-users@lists.sourceforge.net/msg04386.html > > Doesn't seem like that would work correctly for repeated 'rsync -H' runs ... The point is that rsync needs to see the full BackupPC pool during one run. You can't split it up into seperate syncs of pool/, cpool/, pc/host1/, pc/host2/ and so on. rsync updates of the pool *should* work, provided they again get to see the whole system in one pass. "Should work" as in "I haven't heard definite success stories including verification of the copy, and I have some doubts". > [...] > "If I'm reading that correctly, that's only about 10GB of data. I once > tryed syncing 100GB of backuppc pool data from one disk to another, on > the > same machine, with the machine having 512MB RAM and 2GB swap; and after a > day or so, the machine ran itself out of memory and swap, making it > necessary to power-cycle it. I then did the copy with dd; and it only > took > a few hours. If you have lots of RAM and little data; it will work. it's > not a general-purpose scaleable solution tho. " It's not a matter of pool size but of file count (inodes and, possibly, number of links pointing to them). Hope that helps. Regards, Holger ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
