Hello, On 2.6.35-rc5 I'm seeing some weird behavior under heavy IO loads. I have a backup process that fires up several rsync processes. These mirror several dozen servers to individual sub-volumes. Everyday I snapshot each sub-volume and rsync over it.
The problem I'm seeing is my rsync processes are failing randomly with "No space left on device". This is a 6 Terabyte volume with plenty of free space. Mount options: /dev/sdb on /backups type btrfs (rw,max_inline=0,compress) [r...@rsync1 ~]# btrfs filesystem df /backups/ Data: total=1.88TB, used=1.88TB Metadata: total=43.38GB, used=32.06GB System: total=12.00MB, used=260.00KB [r...@rsync1 ~]# df /dev/sdb Filesystem 1K-blocks Used Available Use% Mounted on /dev/sdb 5781249024 2087273084 3693975940 37% /backups They don't all fail at once. Normally I have 4-5 running at a time and 1 or 2 will drop out with a no space error. The rest continue on. I've noticed it will generally occur on ones that are in the middle of transferring a very large file. If I lighten the load to one rsync at a time it appears to happen less frequently. Any known issues I should be aware of? Thanks, -- Dave Cundiff System Administrator A2Hosting, Inc http://www.a2hosting.com -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
