On Fri, 30 Mar 2007, Sylvain MAURIN wrote: >> MaxLine III 300 (7200 rpm, ATA, 8 meg cache), ext3 w/noatime. I'd change >> it to XFS, but backing up 1.7TB would take weeks/months because of the >> hardlinks.
> Hi, > > I use your hardware clone except for HDs (which > are seagate 750GB) and maybe for motherboard > (Tyan) and RAM (4Gb) and choosed XFS for running > backuppc on a amd64 sarge distrib with backported > kernel. > > I purchased recently a large library to include > backuppc and all other servers to amanda tape > backup. > > You are telling us that xfsdump can't handle well > hardlinks but I got around 5mb/s... In fact it's > worse than the standard agregated 15~20mb/s > I have while backuppc dumps but it goes accordingly > with other servers dump/tar speeds... It just > take 4~5 days for a 1.5Tb pool ! xfsdump should handle that fine, in fact i'd expect it to be relatively speedy. My weeks/months would be using rsync, as I can't just dump ext3 to xfs, I have to use something that can handle the hardlinks. ext3 to ext3 upgradesa are easy, just dd the partition and resize2fs it later.. and similar for xfs to xfs. I'm actually in the process of moving the system from ext3 to xfs, it's been 3 days so far just to copy the cpool, and then I'll start the pc/* directories using 3.0.x's backuppc_tarpccopy script. I'm hoping that'll be faster than rsync.. the last time i used rsync was on a 200 gig pool, and it took 4 days to run. > I admit that I can't do a full restore for now ( I havn't > another free TByted partition) but partials are > fine with all hardlinks on small excerpt (50K harlinks, > againt 50*100kb files pool). > > So, from where did you get your assumptions about > xfs_dumps duration (monthes) ? Do I have have missed > a point of configuration and just got luck in my small > restore points ? Must I wait bad surprise like > exponential augmentation of tape backup time ? > > Please help me and feel free to share your experience > and my question by forwarding to backuppc ML. > > Sylvain > > PS : your 1gb isn't small for a 4TB partition ? Except for insane rsync runs, I don't have any problems with memory usage.. most of the backups are samba, so I don't need a lot of memory for rsync backups. I'm pondering putting another 4x256 memory in it anyways though, as ram is cheap. Mike ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
