On Wed, 23 Nov 2011 15:43:14 +0100 "krzf83@xxxxxxxxx " <krzf83@xxxxxxxxx> wrote: > I've been using btrfs for two months now. Every day between 02:00 and > 08:00 I rsync some 300GB data (milions of files) to btrfs device and > then make snapshot. Next day i rsync again 300GG little changed (rsync > "in place"). First days it worked perfectly. Then loadavg (sys load) > started to rise. Now, after 60 days of rsync+shapshots sys load is so > high that whole server becames quite unresponsive betweend 02:00 and > 08:00. I never deleted any shapshot (yet) to its not rebalancing > thing. Hello, I employ the same scenario, except that my rsync-(actually mirrordir-) destination btrfs device is only mounted briefly for the copy-then-snapshot operation, and unmounted during the rest of the time. Haven't noticed any performance problems yet, but even though I have about 2 TB of data there, it's probably not millions of files. Have you tried unmounting the FS and then mounting it again, to see if it solves the performance problem (at least for a while)? Or just keeping it mostly unmounted, I suppose what you have is a partition with backups, so keeping it mostly offline is better reliability-wise. -- With respect, Roman ~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Stallman had a printer, with code he could not see. So he began to tinker, and set the software free."
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