Hi, I have a BTRFS filesystem that seems to be suffering from a few problems. I'll post the first one, which looks most bizarre to me.
The filesystem is mounted at /media/Media. It consists of 4 devices in RAID1 (both metadata and data), of sizes 3*2TB and 1*1TB. The result of sudo btrfs fi df /media/Media/ is as follows: Data, RAID1: total=3.06TB, used=8.74TB System, RAID1: total=32.00MB, used=1.81MB System: total=4.00MB, used=0.00 Metadata, RAID1: total=130.29GB, used=9.41GB I'm running Ubuntu Quantal, on the stock 3.5 kernel (with stock btrfs-tools), but the filesystem has been around for a over a year now, since Oneiric or maybe Natty. It has been causing a few problems recently with the odd kernel crash, but this line in bold seems the most odd. It reports Total as smaller than Used. That just seems very wrong to me. I'd also like to rescue my filesystem rather than kill it and restore from backup if possible (since it's pretty big and restoring would take a while / be error-prone). I'm no kernel developer, but I am able to compile and and willing to help debug issues given instructions. I also have the following mentions of btrfs in the syslog following boot: Nov 12 22:10:43 HomeServer kernel: [ 6.756770] btrfs: bdev /dev/disk/by-uuid/f2178b12-fa9c-4fa0-9efb-11ad188156c0 errs: wr 0, rd 0, flush 0, corrupt 0, gen 0 Nov 12 22:10:43 HomeServer kernel: [ 14.613574] btrfs: bdev /dev/sdd errs: wr 72, rd 0, flush 0, corrupt 0, gen 0 Nov 12 22:10:43 HomeServer kernel: [ 14.613578] btrfs: bdev /dev/sdc errs: wr 542570, rd 559160, flush 0, corrupt 891, gen 0 Nov 12 22:10:43 HomeServer kernel: [ 14.613582] btrfs: bdev /dev/sdb errs: wr 156, rd 1166758, flush 0, corrupt 0, gen 0 Nov 12 22:10:43 HomeServer kernel: [ 14.613584] btrfs: bdev /dev/sda errs: wr 44273, rd 2378244, flush 0, corrupt 429, gen 0 If I attempt to rebalance, the kernel crashes after a while, well before it has had a chance to complete. Any assistance greatly appreciated, and I hope I can also help identify a bug with help. Thanks, Ross -- 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
