[LUG] NTFS drive unmountable

[Philip Whateley <philip.whateley@xxxxxxxxxxxxxx>]

I have a 1TB external USB drive that I use for backups - using sbackup

I have just found that a file I overwrote cannot be restored from backup - not critical, I can live without the file, but on testing none of the files can be restored!!

I have been playing with back in time as an alternative: first time it failed over permissions on some files which I changed (or excluded from the backup)

It has now failed again (log below)

========== Take snapshot (profile 1): Thu Jul 18 20:28:56 2013 ==========

[E] Error: rsync: writefd_unbuffered failed to write 4 bytes to socket [sender]: Broken pipe (32)

[E] Error: rsync: write failed on "/media/Elements/Backups/backintime/Ubuntu/pw8901/1/new_snapshot/backup/home/pw8901/Processing/processing-1.5.1/modes/java/examples/Books/Processing Handbook/Synthesis/_07_typing/data/TheSerif-Plain-128.vlw": Input/output error (5)

[E] Failed to take snapshot 07/18/13 20:28:56 !!!

I now have the problem that the external USB drive appears to be unmountable.

Output of sudo fdisk -l doesn't list the device:

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00028d5b

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 98306047 49152000 83 Linux
/dev/sda2 98306048 196610047 49152000 83 Linux
/dev/sda3 196610048 212994047 8192000 82 Linux swap / Solaris
/dev/sda4 212996094 827396095 307200001 5 Extended
Partition 4 does not start on physical sector boundary.
/dev/sda5 212996096 827396095 307200000 83 Linux

Disk /dev/mapper/cryptswap1: 8388 MB, 8388608000 bytes
255 heads, 63 sectors/track, 1019 cylinders, total 16384000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x7f90e082

Disk /dev/mapper/cryptswap1 doesn't contain a valid partition table

The output of dmesg is

[ 3883.628173] usb 2-2: new high-speed USB device number 5 using ehci_hcd
[ 3883.762895] scsi5 : usb-storage 2-2:1.0
[ 3883.948084] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3883.948093] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3884.761455] scsi 5:0:0:0: Direct-Access WD 10EADS External 1.75 PQ: 0 ANSI: 4
[ 3884.762930] sd 5:0:0:0: Attached scsi generic sg2 type 0
[ 3884.766251] sd 5:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
[ 3884.766790] sd 5:0:0:0: [sdb] Write Protect is off
[ 3884.766797] sd 5:0:0:0: [sdb] Mode Sense: 23 00 00 00
[ 3884.767286] sd 5:0:0:0: [sdb] No Caching mode page present
[ 3884.767292] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[ 3884.769537] sd 5:0:0:0: [sdb] No Caching mode page present
[ 3884.769544] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[ 3887.314250] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3887.314255] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3887.314260] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3887.314267] Info fld=0x0
[ 3887.314270] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3887.314276] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 3887.314290] end_request: critical target error, dev sdb, sector 0
[ 3887.314295] Buffer I/O error on device sdb, logical block 0
[ 3889.903715] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3889.903719] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3889.903723] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3889.903728] Info fld=0x0
[ 3889.903730] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3889.903736] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 3889.903747] end_request: critical target error, dev sdb, sector 0
[ 3889.903752] Buffer I/O error on device sdb, logical block 0
[ 3889.947682] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3889.947687] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3892.492302] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3892.492307] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3892.492312] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3892.492318] Info fld=0x0
[ 3892.492320] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3892.492327] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 3892.492340] end_request: critical target error, dev sdb, sector 0
[ 3892.492346] Buffer I/O error on device sdb, logical block 0
[ 3895.058883] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3895.058887] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3895.058891] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3895.058898] Info fld=0x0
[ 3895.058899] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3895.058905] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 3895.058915] end_request: critical target error, dev sdb, sector 0
[ 3895.058921] Buffer I/O error on device sdb, logical block 0
[ 3895.947672] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3895.947679] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3897.625352] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3897.625358] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3897.625365] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3897.625373] Info fld=0x0
[ 3897.625377] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3897.625385] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 3897.625402] end_request: critical target error, dev sdb, sector 0
[ 3897.625410] Buffer I/O error on device sdb, logical block 0
[ 3897.625432] ldm_validate_partition_table(): Disk read failed.
[ 3900.191797] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3900.191801] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3900.191805] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3900.191810] Info fld=0x0
[ 3900.191812] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3900.191818] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 3900.191828] end_request: critical target error, dev sdb, sector 0
[ 3900.191833] Buffer I/O error on device sdb, logical block 0
[ 3900.613349] Dev sdb: unable to read RDB block 0
[ 3901.947699] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3901.947705] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3903.191771] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3903.191777] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3903.191782] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3903.191789] Info fld=0x0
[ 3903.191791] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3903.191797] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 18 00 00 08 00
[ 3903.191811] end_request: critical target error, dev sdb, sector 24
[ 3903.191817] Buffer I/O error on device sdb, logical block 3
[ 3905.781354] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3905.781358] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3905.781363] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3905.781368] Info fld=0x0
[ 3905.781370] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3905.781375] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 18 00 00 08 00
[ 3905.781386] end_request: critical target error, dev sdb, sector 24
[ 3905.781391] Buffer I/O error on device sdb, logical block 3
[ 3905.781440] sdb: unable to read partition table
[ 3905.784099] sd 5:0:0:0: [sdb] No Caching mode page present
[ 3905.784103] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[ 3905.784106] sd 5:0:0:0: [sdb] Attached SCSI disk
[ 3907.947680] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3907.947686] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3908.514060] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3908.514064] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3908.514069] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3908.514074] Info fld=0x0
[ 3908.514076] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3908.514081] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3908.514092] end_request: critical target error, dev sdb, sector 8
[ 3908.514097] Buffer I/O error on device sdb, logical block 1
[ 3911.091651] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3911.091654] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3911.091659] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3911.091665] Info fld=0x0
[ 3911.091667] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3911.091672] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3911.091683] end_request: critical target error, dev sdb, sector 8
[ 3911.091688] Buffer I/O error on device sdb, logical block 1
[ 3913.825368] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3913.825372] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3913.825376] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3913.825382] Info fld=0x0
[ 3913.825384] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3913.825389] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3913.825400] end_request: critical target error, dev sdb, sector 8
[ 3913.825405] Buffer I/O error on device sdb, logical block 1
[ 3913.947689] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3913.947696] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3916.413827] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3916.413831] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3916.413835] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3916.413841] Info fld=0x0
[ 3916.413842] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3916.413848] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3916.413859] end_request: critical target error, dev sdb, sector 8
[ 3916.413864] Buffer I/O error on device sdb, logical block 1
[ 3919.058411] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3919.058415] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3919.058419] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3919.058425] Info fld=0x0
[ 3919.058427] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3919.058432] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3919.058443] end_request: critical target error, dev sdb, sector 8
[ 3919.058448] Buffer I/O error on device sdb, logical block 1
[ 3919.947701] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3919.947707] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3921.635997] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3921.636012] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3921.636016] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3921.636024] Info fld=0x0
[ 3921.636027] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3921.636035] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3921.636053] end_request: critical target error, dev sdb, sector 8
[ 3921.636059] Buffer I/O error on device sdb, logical block 1
[ 3924.224569] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3924.224574] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3924.224579] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3924.224584] Info fld=0x0
[ 3924.224586] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3924.224591] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3924.224602] end_request: critical target error, dev sdb, sector 8
[ 3924.224607] Buffer I/O error on device sdb, logical block 1
[ 3925.947697] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3925.947703] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3926.814043] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3926.814048] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3926.814054] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3926.814061] Info fld=0x0
[ 3926.814063] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3926.814069] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3926.814083] end_request: critical target error, dev sdb, sector 8
[ 3926.814088] Buffer I/O error on device sdb, logical block 1
[ 3931.780952] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3931.780957] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3931.780962] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3931.780969] Info fld=0x0
[ 3931.780971] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3931.780977] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 78 00 00 08 00
[ 3931.780991] end_request: critical target error, dev sdb, sector 120
[ 3931.780998] Buffer I/O error on device sdb, logical block 15
[ 3931.947758] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3931.947764] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3934.369544] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3934.369549] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3934.369554] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3934.369560] Info fld=0x0
[ 3934.369563] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3934.369569] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 78 00 00 08 00
[ 3934.369583] end_request: critical target error, dev sdb, sector 120
[ 3934.369589] Buffer I/O error on device sdb, logical block 15
[ 3937.036120] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3937.036125] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3937.036129] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3937.036134] Info fld=0x0
[ 3937.036136] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3937.036142] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3937.036154] end_request: critical target error, dev sdb, sector 8
[ 3937.036158] Buffer I/O error on device sdb, logical block 1
[ 3937.947710] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3937.947715] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3939.624582] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3939.624586] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3939.624590] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3939.624597] Info fld=0x0
[ 3939.624599] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3939.624604] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[ 3939.624615] end_request: critical target error, dev sdb, sector 8
[ 3939.624623] Buffer I/O error on device sdb, logical block 1
[ 3942.213165] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3942.213170] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3942.213175] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3942.213179] Info fld=0x0
[ 3942.213181] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3942.213187] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 10 00 00 08 00
[ 3942.213197] end_request: critical target error, dev sdb, sector 16
[ 3942.213202] Buffer I/O error on device sdb, logical block 2
[ 3943.947701] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3943.947708] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3944.802757] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3944.802763] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3944.802768] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3944.802774] Info fld=0x0
[ 3944.802777] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3944.802784] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 80 00 00 08 00
[ 3944.802796] end_request: critical target error, dev sdb, sector 128
[ 3944.802805] Buffer I/O error on device sdb, logical block 16
[ 3947.402209] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3947.402213] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3947.402218] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3947.402223] Info fld=0x0
[ 3947.402225] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3947.402230] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 80 00 00 08 00
[ 3947.402241] end_request: critical target error, dev sdb, sector 128
[ 3947.402247] Buffer I/O error on device sdb, logical block 16
[ 3949.947694] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3949.947700] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3951.702481] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3951.702488] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3951.702495] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3951.702503] Info fld=0x0
[ 3951.702506] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3951.702515] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 80 00 00 08 00
[ 3951.702533] end_request: critical target error, dev sdb, sector 128
[ 3951.702540] Buffer I/O error on device sdb, logical block 16
[ 3955.212961] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3955.212965] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3955.212970] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3955.212975] Info fld=0x0
[ 3955.212977] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3955.212982] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 10 00 00 08 00
[ 3955.212993] end_request: critical target error, dev sdb, sector 16
[ 3955.212999] Buffer I/O error on device sdb, logical block 2
[ 3955.947690] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3955.947695] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3959.513100] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3959.513104] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3959.513108] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3959.513114] Info fld=0x0
[ 3959.513116] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3959.513121] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 80 00 00 08 00
[ 3959.513131] end_request: critical target error, dev sdb, sector 128
[ 3959.513136] Buffer I/O error on device sdb, logical block 16
[ 3961.947929] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3961.947935] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3963.024582] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3963.024587] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3963.024591] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3963.024596] Info fld=0x0
[ 3963.024598] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3963.024603] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 40 00 00 08 00
[ 3963.024615] end_request: critical target error, dev sdb, sector 64
[ 3963.024619] Buffer I/O error on device sdb, logical block 8
[ 3967.323741] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3967.323746] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3967.323753] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3967.323761] Info fld=0x0
[ 3967.323764] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3967.323776] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 40 00 00 08 00
[ 3967.323787] end_request: critical target error, dev sdb, sector 64
[ 3967.323793] Buffer I/O error on device sdb, logical block 8
[ 3967.947668] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3967.947673] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3970.835219] sd 5:0:0:0: [sdb] Unhandled sense code
[ 3970.835223] sd 5:0:0:0: [sdb] Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[ 3970.835227] sd 5:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 3970.835232] Info fld=0x0
[ 3970.835234] sd 5:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 3970.835240] sd 5:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 40 00 00 08 00
[ 3970.835251] end_request: critical target error, dev sdb, sector 64
[ 3970.835256] Buffer I/O error on device sdb, logical block 8
[ 3973.948100] ERROR @wl_cfg80211_get_station : Could not get rate (-1)
[ 3973.948109] ERROR @wl_cfg80211_get_station : Could not get rssi (-1)
[ 3979.947962] ERROR @wl_cfg80211_get_station : Could not get rate (-1)

Any ideas?

Thanks

Phil

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