[  509.970118] EXT3-fs (sdb2): error: remounting filesystem read-only
[  560.489097] journal commit I/O error
[  560.573505] EXT3-fs (sdb2): error: ext3_put_super: Couldn't clean up the journal
[  633.065895] usb 2-3: reset high-speed USB device number 9 using ehci-pci
[  657.256347] EXT3-fs (sdb2): error: unable to read superblock
[  677.698990] EXT3-fs (sdb2): error: unable to read superblock
[  695.067411] usb 2-3: reset high-speed USB device number 9 using ehci-pci
[  728.055735] usb 2-3: reset high-speed USB device number 9 using ehci-pci
[  761.036049] usb 2-3: reset high-speed USB device number 9 using ehci-pci