System Update froze - UbuntuMATE 16-04

[Sarunas Burdulis]

On 2018-06-21 13:23, Bret Busby wrote:
> On 22/06/2018, Sarunas Burdulis <sarunas at math.dartmouth.edu> wrote:
>> On 2018-06-21 11:46, Bret Busby wrote:
>> ...
>>>> I can post a copy of an excerpt (possibly, tail) of the file syslog,
>>>> if that helps.
>>> "
>>> root at bret-Inspiron-580-UbuntuMATE:/home/bret# tail -30 /var/log/syslog
>>> Jun 21 23:23:08 bret-Inspiron-580-UbuntuMATE kernel: [1718469.945845]
>>> sd 3:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK
>>> driverbyte=DRIVER_SENSE
>>> Jun 21 23:23:08 bret-Inspiron-580-UbuntuMATE kernel: [1718469.945852]
>>> sd 3:0:0:0: [sdb] tag#0 Sense Key : Hardware Error [current]
>> ...
>>
>> If you're not sure, whether its your external USB drive, you may check
>> with `dmesg` and see how it is initialized. I can't suggest a good grep
>> pattern, but you should look for lines where 'sdb' first appears and
>> then several lines above there might be usb-storage, usbcore messages,
>> similar to this:
>>
>> [69237.176353] usb 1-13: new high-speed USB device number 4 using xhci_hcd
>> [69237.425014] usb 1-13: New USB device found, idVendor=174c,
>> idProduct=5136
>> [69237.425017] usb 1-13: New USB device strings: Mfr=2, Product=3,
>> SerialNumber=1
>> [69237.425019] usb 1-13: Product: AS2105
>> [69237.425020] usb 1-13: Manufacturer: ASMedia
>> [69237.425022] usb 1-13: SerialNumber: 00000000000000000000
>> [69237.449081] usb-storage 1-13:1.0: USB Mass Storage device detected
>> [69237.449367] scsi host9: usb-storage 1-13:1.0
>> [69237.449495] usbcore: registered new interface driver usb-storage
>> [69237.451105] usbcore: registered new interface driver uas
>> [69238.461612] scsi 9:0:0:0: Direct-Access     ASMT     2105
>> 0    PQ: 0 ANSI: 6
>> [69238.461934] sd 9:0:0:0: Attached scsi generic sg1 type 0
>> [69238.470229] sd 9:0:0:0: [sda] Spinning up disk...
>> [
>>
> 
> 
> Response from dmesg ends with
> 
> "
> [1724770.326664] sd 3:0:0:0: [sdb] tag#0 FAILED Result:
> hostbyte=DID_OK driverbyte=DRIVER_SENSE
> [1724770.326671] sd 3:0:0:0: [sdb] tag#0 Sense Key : Hardware Error [current]
> [1724770.326678] sd 3:0:0:0: [sdb] tag#0 Add. Sense: Internal target failure
> [1724770.326685] sd 3:0:0:0: [sdb] tag#0 CDB: Write(10) 2a 00 09 de 44
> d8 00 00 f0 00

Yes, we know sdb is broken and is holding up all disk IO, including
sync, then initramfs.

If you know that sdb is your external USB drive, then you can pull it
from the USB port and the system may recover. If you're not sure what
sdb is, you can search dmesg messages for clues. For example

dmesg | grep -A8 usb

might show new USB device being initialized and then turned into sdb.

If instead sdb is your internal harddisk, then there probably is no
sense continuing with the upgrade. You may boot from live media and try
to salvage any data from it, if needed.


-- 
Sarunas Burdulis
Systems Administrator, Dartmouth Mathematics
math.dartmouth.edu/~sarunas

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