Is anyone interested in some part of this filesystem to figure out how it failed? Or can I erase and start again? Kind regards, -Evert Vorster- On Sun, Aug 8, 2010 at 8:18 AM, Evert Vorster <evorster@xxxxxxxxx> wrote: > Hi there. > > I have a btrfs on a raw device. (/dev/sda insted of in a partition, like > /dev/sda1 ) > The device in question is a USB hard drive with a 1TB size. > > The device worked fine for a week or so, and was mounted and unmounted quite > a few times without trouble. > > The last time the device was unmounted it was a normal unmount. > > Now, when I try to mount the device, I get the following in dmesg: > > usb 2-1: new high speed USB device using ehci_hcd and address 4 > scsi6 : usb-storage 2-1:1.0 > scsi 6:0:0:0: Direct-Access Seagate FreeAgent GoFlex 0148 PQ: 0 ANSI: 4 > sd 6:0:0:0: Attached scsi generic sg2 type 0 > sd 6:0:0:0: [sdb] 1953525167 512-byte logical blocks: (1.00 TB/931 GiB) > sd 6:0:0:0: [sdb] Write Protect is off > sd 6:0:0:0: [sdb] Mode Sense: 1c 00 00 00 > sd 6:0:0:0: [sdb] Assuming drive cache: write through > sd 6:0:0:0: [sdb] Assuming drive cache: write through > sdb: unknown partition table > sd 6:0:0:0: [sdb] Assuming drive cache: write through > sd 6:0:0:0: [sdb] Attached SCSI disk > device label TeraByte1 devid 1 transid 5352 /dev/sdb > parent transid verify failed on 986800398336 wanted 5352 found 5355 > parent transid verify failed on 986800398336 wanted 5352 found 5355 > parent transid verify failed on 986800398336 wanted 5352 found 5355 > btrfs: open_ctree failed > > > Also, if I try to fsck the device, this is the output: > > bin@dora:~# btrfsck /dev/sdb > parent transid verify failed on 986800398336 wanted 5352 found 5355 > parent transid verify failed on 986800398336 wanted 5352 found 5355 > parent transid verify failed on 986800398336 wanted 5352 found 5355 > btrfsck: disk-io.c:739: open_ctree_fd: Assertion `!(!tree_root->node)' > failed. > Aborted > > > I am using v 0.19 of the btrfs-tools, and kernel version 2.6.34.1 > > While a little sad that I can't get at my data anymore, I do have backups of > it. I also want to use the device again, but want to stop anybody else > running into the same problem. So, if you have any requests like maybe a dd > of some small part of the filesystem to study and see what went wrong, and > maybe how to fix it, I would be happy to oblige. However, If I hear nothing > for a day or so, I'll wipe the filesystem and use the device again. > > Kind regards, > -Evert Vorster- > -- http://magnatune.com - Music shared the way it should be. -- 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
