On Tue, 2008-09-09 at 08:18 +0100, Frank Kingswood wrote: > Hallo! > > I was running bonnie to compare btrfs to alternatives, see where it is > in terms of relative performance. It looks good (but has very high CPU > usage, is that expected?), but then I get a warning and later an oops. > > This is using two >9GB partitions, and bonnie running with 3GB and later > 9GB. > > kernel: Btrfs v0.16+417d87e57364 loaded > > Here begins the first run, mkfs -d raid0 > > kernel: device label test devid 1 transid 7 /dev/sda2 > kernel: device label test devid 2 transid 7 /dev/sdb2 > kernel: device label test devid 1 transid 12 /dev/sda2 > kernel: space info full 9 > > but it completes bonnie. > > Here begins the second run, mkfs -d raid1 > > kernel: device label test devid 1 transid 7 /dev/sda2 > kernel: device label test devid 2 transid 7 /dev/sdb2 > kernel: device label test devid 1 transid 12 /dev/sda2 > kernel: space info full 17 > kernel: Unable to find block group for 9183821824 Well, you're hitting a variant of the enospc code. My guess is that you've filled up the volume to the point where everything is allocated as a data extent, then deleted the file to make room then tried run #2. How big is the volume and how big are the files created by each run? -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
