[PLUG] Mediasonic failure?

[John Jason Jordan]

I rebooted the laptop and that finally got the laptop to see and mount
the Mediasonic, although it is not working completely right. But before
tackling that, once it was mounted I ran my rsync command to back it up
to the Synology. That finished OK, so everything is safe, but, again,
something is wrong.

What is wrong? Access time. During the backup I watched in the terminal
and after finishing a file rsync would take five or ten seconds before
it would start the next file, and sometimes in the middle of a file it
would pause before continuing. (Rsync displays its progress verbosely.)
At one point it paused so long that I physically jiggled the USB
connector and then it immediately started again.

The laptop has three regular USB 3.0 jacks and a fourth that is
also something else (can't remember, e-sata?). Three are on the right
side and they are constantly being used, things plugged in and then
removed. One is in the back and it has a ΗοοΤοο (sic) USB 3.0 extension
with three jacks and an ethernet jack on the end. The Mediasonic has
always been plugged into the HooToo, and the HooToo is plugged in and
unplugged only once a month when I take the laptop to the Clinic. My
point is that if USB jacks are failing, the one in back with the HooToo
has had the least wear and tear. More to the point, previously I tried
all jacks and got the same failure. It is unlikely in the extreme that
all four jacks are suddenly failing at the same time.


wes <plug at the-wes.com> dijo:

>Sounds like it's time for a reboot.
>
>-wes
>
>On Wed, Mar 21, 2018 at 11:48 AM, John Jason Jordan <johnxj at gmx.com>
>wrote:
>
>> Why didn't I think of that?
>>
>> OK, first I unplugged it from the laptop and plugged it into the
>> Desktop. It appeared immediately and the Desktop happily mounted it
>> and ls displayed all folders and individual files. Yay! (So far
>> anyway.) Then I went back to the laptop and tried various USB jacks,
>> but nada. However, dmesg gave me this:
>>
>> [234517.633973] usb 4-1: Disable of device-initiated U1 failed.
>> [234517.637438] usb 4-1: Disable of device-initiated U2 failed.
>> [234517.746532] usb 4-1: reset SuperSpeed USB device number 6 using
>> xhci_hcd [234517.762595] usb 4-1: device firmware changed
>>
>> None of that makes any sense to me.
>>
>> On Wed, 21 Mar 2018 11:20:57 -0700
>> wes <plug at the-wes.com> dijo:
>>
>> >I would watch /var/log/messages or dmesg output as I plug in the
>> >device (maybe try a couple of systems to see if there's a
>> >difference).
>> >
>> >If there's no output, the enclosure is dead and your drives are
>> >probably ok.
>> >
>> >If you get some output, there may be a hint as to the problem there.
>> >Could be anything at this point.
>> >
>> >-wes
>> >
>> >On Wed, Mar 21, 2018 at 11:15 AM, John Jason Jordan <johnxj at gmx.com>
>> >wrote:
>> >
>> >> The command ls -la has always displayed all the directories first
>> >> and then individual files. Suddenly it just displayed the
>> >> directories. But then I discovered that it did display individual
>> >> files for other folders, the problem was only with one
>> >> folder: /media/jjj/Movies. And that folder is a Mediasonic USB
>> >> enclosure holding a 6TB and an 8TB SATA3 disk set up as Raid0.
>> >>
>> >> I decided to umount it and then mount it again, but I kept getting
>> >> busy error messages, even though anything that might be accessing
>> >> it is shut down. Finally I just powered it down and then turned
>> >> it back on. The display lights on the front of the case look
>> >> normal, but it does not appear. I also swapped the cables, but no
>> >> joy.
>> >>
>> >> The device is 99.9% backed up to my Synology; the only thing I
>> >> might lose is one movie that I ripped this morning from a DVD
>> >> that I own.
>> >>
>> >> A quick check tells me that I bought the Mediasonic case and the
>> >> 8TB WD drive in the summer of 2016. The 6TB is also WD, but a
>> >> couple years older.
>> >>
>> >> Where would you start to sleuth out what went wrong?
>> >> _______________________________________________
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>> >>
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