Thread: Faulty USB drive?

i have usb drive i've formatted ext4. i'm manually mounting , trying use backup drive. seems after period of time, fails, , system brings device again. show different device when comes again. @ first thought gnome automount stuff messing drive, i've had same problem own mounts now.

have faulty drive or there else going on? i've pasted relevant dmesg output.

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[ 6893.668245] usb 2-1.7: new high speed usb device using ehci_hcd , address 12
[ 6894.409692] scsi14 : usb-storage 2-1.7:1.0
[ 6896.474018] scsi 14:0:0:0: direct-access wd passport 0730 1012 pq: 0 ansi: 6
[ 6896.474767] scsi 14:0:0:1: enclosure wd ses device 1012 pq: 0 ansi: 6
[ 6896.475671] sd 14:0:0:0: attached scsi generic sg3 type 0
[ 6896.475897] ses 14:0:0:1: attached enclosure device
[ 6896.476058] ses 14:0:0:1: attached scsi generic sg4 type 13
[ 6900.392313] sd 14:0:0:0: [sdc] 1465081856 512-byte logical blocks: (750 gb/698 gib)
[ 6900.393155] sd 14:0:0:0: [sdc] write protect off
[ 6900.393160] sd 14:0:0:0: [sdc] mode sense: 47 00 10 08
[ 6900.393165] sd 14:0:0:0: [sdc] assuming drive cache: write through
[ 6900.395734] sd 14:0:0:0: [sdc] assuming drive cache: write through
[ 6900.395742] sdc: sdc1
[ 6900.418734] sd 14:0:0:0: [sdc] assuming drive cache: write through
[ 6900.418741] sd 14:0:0:0: [sdc] attached scsi disk
[ 6928.872222] ext4-fs (sdc1): recovery complete
[ 6928.872962] ext4-fs (sdc1): mounted filesystem ordered data mode. opts: (null)
[ 6974.649975] lo: disabled privacy extensions
[ 6986.856300] usb 2-1.7: reset high speed usb device using ehci_hcd , address 12
[ 7048.337524] usb 2-1.7: reset high speed usb device using ehci_hcd , address 12
[ 7063.384831] usb 2-1.7: device descriptor read/64, error -110
[ 7078.535481] usb 2-1.7: device descriptor read/64, error -110
[ 7078.710624] usb 2-1.7: reset high speed usb device using ehci_hcd , address 12
[ 7078.887387] sd 14:0:0:0: device offlined - not ready after error recovery
[ 7078.887418] sd 14:0:0:0: [sdc] unhandled error code
[ 7078.887425] sd 14:0:0:0: [sdc] result: hostbyte=did_error driverbyte=driver_ok
[ 7078.887435] sd 14:0:0:0: [sdc] cdb: write(10): 2a 00 27 bd 59 7f 00 00 f0 00
[ 7078.887463] end_request: i/o error, dev sdc, sector 666720639
[ 7078.887473] quiet_error: 20 callbacks suppressed
[ 7078.887480] buffer i/o error on device sdc1, logical block 83340072
[ 7078.887488] lost page write due i/o error on sdc1
[ 7078.887500] buffer i/o error on device sdc1, logical block 83340073
[ 7078.887507] lost page write due i/o error on sdc1
[ 7078.887516] buffer i/o error on device sdc1, logical block 83340074
[ 7078.887522] lost page write due i/o error on sdc1
[ 7078.887529] buffer i/o error on device sdc1, logical block 83340075
[ 7078.887532] lost page write due i/o error on sdc1
[ 7078.887540] usb 2-1.7: usb disconnect, address 12
[ 7078.887551] buffer i/o error on device sdc1, logical block 83340076
[ 7078.887558] lost page write due i/o error on sdc1
[ 7078.887565] buffer i/o error on device sdc1, logical block 83340077
[ 7078.887572] lost page write due i/o error on sdc1
[ 7078.887580] buffer i/o error on device sdc1, logical block 83340078
[ 7078.887586] lost page write due i/o error on sdc1
[ 7078.887593] buffer i/o error on device sdc1, logical block 83340079
[ 7078.887600] lost page write due i/o error on sdc1
[ 7078.887607] buffer i/o error on device sdc1, logical block 83340080
[ 7078.887614] lost page write due i/o error on sdc1
[ 7078.887623] buffer i/o error on device sdc1, logical block 83340081
[ 7078.887629] lost page write due i/o error on sdc1
[ 7078.897732] jbd2: detected io errors while flushing file data on sdc1-8
[ 7078.897767] end_request: i/o error, dev sdc, sector 730081839
[ 7078.897775] aborting journal on device sdc1-8.
[ 7078.897797] jbd2: i/o error detected when updating journal superblock sdc1-8.
[ 7078.897820] ext4-fs (sdc1): delayed block allocation failed inode 38535356 @ logical offset 114688 max blocks 448 error -30
[ 7078.897829] ext4-fs error (device sdc1): ext4_journal_start_sb: detected aborted journal
[ 7078.897837] ext4-fs (sdc1): remounting filesystem read-only
[ 7078.897843]
[ 7078.897846] ext4-fs error (device sdc1) in ext4_da_write_end: io failure
[ 7078.897853] should not happen!! data lost
[ 7078.898147] ext4-fs (sdc1): ext4_da_writepages: jbd2_start: 448 pages, ino 38535356; err -30
[ 7080.032479] usb 2-1.7: new high speed usb device using ehci_hcd , address 13
[ 7080.774669] scsi15 : usb-storage 2-1.7:1.0
[ 7081.771175] scsi 15:0:0:0: direct-access wd passport 0730 1012 pq: 0 ansi: 6
[ 7081.772007] scsi 15:0:0:1: enclosure wd ses device 1012 pq: 0 ansi: 6
[ 7081.772867] sd 15:0:0:0: attached scsi generic sg3 type 0
[ 7081.773028] ses 15:0:0:1: attached enclosure device
[ 7081.773143] ses 15:0:0:1: attached scsi generic sg4 type 13
[ 7081.774146] sd 15:0:0:0: [sde] 1465081856 512-byte logical blocks: (750 gb/698 gib)
[ 7081.775740] sd 15:0:0:0: [sde] write protect off
[ 7081.775748] sd 15:0:0:0: [sde] mode sense: 47 00 10 08
[ 7081.775753] sd 15:0:0:0: [sde] assuming drive cache: write through
[ 7081.778509] sd 15:0:0:0: [sde] assuming drive cache: write through
[ 7081.778517] sde: sde1
[ 7081.797195] sd 15:0:0:0: [sde] assuming drive cache: write through
[ 7081.797202] sd 15:0:0:0: [sde] attached scsi disk

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