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Re: plugged in thumb drive, which disconnected another USB drive



Quoting Curt (curty@free.fr):
> On 2015-03-12, David Wright <deblis@lionunicorn.co.uk> wrote:
> >> >> 
> >> >> Is that Iomega USB drive healthy? 
> >
> > Do you mean "was it healthy before this incident"
> > or are you expressing concern for its health since
> > being disconnected.
> 
> I meant the former, though I'm sure you know more about
> everything than I do.

I'm not sure what that's about.

> > Yes, I'd certainly think the latter, and fsck/chkdsk it.
> 
> Why not?  How about those smartmon thingies? 

Oo, gosh, that's far too modern for me. I'm only just catching up on
those tools and am not sure I always understand what's reported.

> >> > I haven't noticed any other issues with it, and I do scan
> >> > /var/log/syslog for warning and error messages.  That said, the drive
> >> > *is* 5 years old, and I'd been planning to replace it this year just
> >> > based on its age.  Maybe I should do that sooner rather than later.
> >> 
> >> I think you got some error messages (the ones you showed us).
> >
> > It might help if you'd quote the lines you're worried about, rather
> > than just referring us all back to a long list of diagnostics.
> 
> <snip> Buffer I/O error on device sdb1, logical block 39027202
> <snip> lost page write due to I/O error on sdb1
> <snip> JBD2: Error -5 detected when updating journal superblock for
> sdb1-8.

Oh, OK. I think that's just a symptom of the disconnect:

- Mar  9 18:01:37 allegro kernel: [34452.783990] usb 1-4.3: USB disconnect, device number 6

The plug "pulled", as it were.

- Mar  9 18:01:37 allegro udisksd[1059]: Cleaning up mount point /media/kupfer/external (device 8:17 no longer exist)

udisks daemon notices it's gone (no timing info)

- Mar  9 18:01:37 allegro kernel: [34453.236267] Buffer I/O error on device sdb1, logical block 39027202
- Mar  9 18:01:37 allegro kernel: [34453.236272] lost page write due to I/O error on sdb1
- Mar  9 18:01:37 allegro kernel: [34453.236275] JBD2: Error -5 detected when updating journal superblock for sdb1-8.

Either the process that was writing to the device when it suddenly disappeared,
or perhaps something to do with udisks's actions.

- Mar  9 18:01:38 allegro kernel: [34453.327437] usb 1-4.3: new high-speed USB device number 7 using ehci-pci
Now it's "plugged" back in.

- [...]
- Mar  9 18:01:38 allegro kernel: [34453.623357] usb 1-4.4: new high-speed USB device number 8 using ehci-pci
And here comes the thumbdrive.

Could it be nothing more than a dicky plug contact?
I don't use automount so I'd rattle the connectors around and see if I
got lots of connect/disconnect messages. If it's a powered hub running
off a wall-wart, it might be the power rather than the data cable.

Cheers,
David.


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