That's a big file - is that a dump of all the metadata? It's around 800MB. Two files provided, one with the errors/warnings, one the actual output. Time-limited link to download, can you let me know when you have downloaded a copy please? http://akiajwevbuo5lh2yiu7q.sharing.s3.amazonaws.com/btrfs-debug-tree?AWSAccessKeyId=AKIAJWEVBUO5LH2YIU7Q&Expires=1352934869&Signature=LAX0noCgddqJY3pmfYh9v1moFqg%3D http://akiajwevbuo5lh2yiu7q.sharing.s3.amazonaws.com/btrfs-debug-tree_errors?AWSAccessKeyId=AKIAJWEVBUO5LH2YIU7Q&Expires=1352934869&Signature=no9GxLnaaS1gc%2BBLJmxSlAAmNz0%3D On 12 November 2012 23:08, Liu Bo <bo.li.liu@xxxxxxxxxx> wrote: > 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 majordomo@xxxxxxxxxxxxxxx >> 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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
