Ari, I have been using BackupPC successfully with ZFS On Linux for a few years now. This was simply convenient as I had a lot of old hardware with 3TB drives that I was able to repurpose for the task. We have about a dozen hosts with either ~60TB or ~160TB usable in Raid Z1+spare. Despite having no issues I would probably redo them as raidz2 with no hot spare.
I use config management to set the number of concurrent jobs per hosts based on the number of cores on the systems. The data being backed up ranges from many small files to few very large files. The only tweaking I've done is configure so that we do many incrementals but 1 full every 90 days (just to reduce traffic to primary storage). I also disable compression in backuppc letting the file system handle that. Other than the manual act of rebuilding the zfs modules between kernel upgrades it works very well! Matt -----Original Message----- From: Ari Sovijärvi <listat2...@apz.fi> Sent: Sunday, December 2, 2018 10:46 AM To: backuppc-users@lists.sourceforge.net Subject: Re: [BackupPC-users] BackupPC writes to disk very slow On 2.12.2018 15.32, Tapio Lehtonen wrote: > On new BackupPC host backups go very slow. I believe I have determined > the network connection is not at fault, from Windows machine > Speedtest.net shows a little less than gigabit speeds and from this > backuppc host speedtest.cli shows over 800 Mbits / sek. Out of curiosity, have you experimented with other filesystems? I have couple relatively large setups (pool at ~ 9 terabytes) with ext4 and those still crunch backups happily. XFS has been a bit hit and miss for me, I know many swear by it, but where I've tested it, I've hit all kinds of random problems to a degree that I haven't bothered with it any more. I've been recently experimenting with separating the pc and pool directories so pc directories are on SSD storage and the pool on HDDs. Jury is still out on real life speedups on this, but it seems possible with BPC4. -- Ari Sovijärvi _______________________________________________ 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/ _______________________________________________ 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/
