On Mon, Nov 12, 2012 at 10:37:58PM +0800, Ross Moore wrote: > 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). >
Can you provide the output of 'btrfs-debug-tree /dev/sdd'? thanks, liubo > 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 -- 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
