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victorhooi

Member

Registered: 2009-08-06

Posts: 109

Btrfs - Unable to mount - Can't read superblock?

heya,

I have an external harddisk, with a btrfs filessystem on it.

Just now, after a reboot, I seem to be unable to mount it.

KDE gives a message about being unable to find the superblock, trying to mount it from the command-line gives something similar:

mount: /dev/sdc1: can't read superblock

I do know the last time I used the disk, it may not have been unmounted cleanly. Could that have caused this current issue? Any possible remedy? I'm really hoping it is, because that's a 1.5 Tb external disk...lol.

Also, dmesg contains:

usb 2-2: new high speed USB device using ehci_hcd and address 8
usb 2-2: configuration #1 chosen from 1 choice
scsi10 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 8
usb-storage: waiting for device to settle before scanning
scsi 10:0:0:0: Direct-Access     WDC WD15 EADS-00P8B0           PQ: 0 ANSI: 2
sd 10:0:0:0: Attached scsi generic sg2 type 0
usb-storage: device scan complete
sd 10:0:0:0: [sdc] 2930277168 512-byte logical blocks: (1.50 TB/1.36 TiB)
sd 10:0:0:0: [sdc] Write Protect is off
sd 10:0:0:0: [sdc] Mode Sense: 38 00 00 00
sd 10:0:0:0: [sdc] Assuming drive cache: write through
sd 10:0:0:0: [sdc] Assuming drive cache: write through
 sdc: sdc1
sd 10:0:0:0: [sdc] Assuming drive cache: write through
sd 10:0:0:0: [sdc] Attached SCSI disk
device label tessier-ashpool devid 1 transid 4882 /dev/sdc1
open /dev/sdd1 failed

Cheers,
Victor

Last edited by victorhooi (2010-02-13 12:38:21)