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Encrypted flash drives

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  Encrypted flash drives Mark Fletcher <mark27q1@gmail.com> - 2017-03-26 11:10 +0200
    Re: Encrypted flash drives Nicolas George <george@nsup.org> - 2017-03-26 11:20 +0200
      Re: Encrypted flash drives Mark Fletcher <mark27q1@gmail.com> - 2017-03-26 11:30 +0200
        Re: Encrypted flash drives Nicolas George <george@nsup.org> - 2017-03-26 11:40 +0200
          Re: Encrypted flash drives Mark Fletcher <mark27q1@gmail.com> - 2017-03-26 12:00 +0200
            Re: Encrypted flash drives <tomas@tuxteam.de> - 2017-03-26 12:10 +0200
            Re: Encrypted flash drives Nicolas George <george@nsup.org> - 2017-03-26 12:30 +0200
              Re: Encrypted flash drives Mark Fletcher <mark27q1@gmail.com> - 2017-03-27 01:40 +0200
                Re: Encrypted flash drives <tomas@tuxteam.de> - 2017-03-27 10:10 +0200
                  [off topic] Re: Encrypted flash drives "Thomas Schmitt" <scdbackup@gmx.net> - 2017-03-27 10:30 +0200
                    Re: [off topic] Re: Encrypted flash drives <tomas@tuxteam.de> - 2017-03-27 11:50 +0200
                      [off topic] Re: Encrypted flash drives "Thomas Schmitt" <scdbackup@gmx.net> - 2017-03-27 13:00 +0200
                        Re: [off topic] Re: Encrypted flash drives kAt <giathnygeia@openmailbox.org> - 2017-03-28 00:30 +0200
                          Re: [off topic] Re: Encrypted flash drives "Thomas Schmitt" <scdbackup@gmx.net> - 2017-03-28 12:50 +0200
                            Re: [way off topic] Re: Encrypted flash drives David Wright <deblis@lionunicorn.co.uk> - 2017-03-28 16:10 +0200
                  Re: Encrypted flash drives Mark Fletcher <mark27q1@gmail.com> - 2017-03-27 16:10 +0200
                    Re: Encrypted flash drives <tomas@tuxteam.de> - 2017-03-27 16:40 +0200
                  Re: Encrypted flash drives Mark Fletcher <mark27q1@gmail.com> - 2017-03-27 17:00 +0200
                    Re: Encrypted flash drives <tomas@tuxteam.de> - 2017-03-27 21:40 +0200
                      Re: Encrypted flash drives Mark Fletcher <mark27q1@gmail.com> - 2017-04-03 14:10 +0200
                        Re: Encrypted flash drives <tomas@tuxteam.de> - 2017-04-03 15:10 +0200
                          Re: Encrypted flash drives Mark Fletcher <mark27q1@gmail.com> - 2017-05-01 09:50 +0200
                        Re: Encrypted flash drives Cindy-Sue Causey <butterflybytes@gmail.com> - 2017-04-03 18:40 +0200

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#179736

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On Mon, Apr 03, 2017 at 09:01:59PM +0900, Mark Fletcher wrote:
> On Mon, Mar 27, 2017 at 09:32:33PM +0200, tomas@tuxteam.de wrote:
> > On Mon, Mar 27, 2017 at 11:58:51PM +0900, Mark Fletcher wrote:
> > > On Mon, Mar 27, 2017 at 10:02:27AM +0200, tomas@tuxteam.de wrote:
> > > > On Mon, Mar 27, 2017 at 08:31:45AM +0900, Mark Fletcher wrote:
> > > > 
> > > > [...]
> > > > 
> > > > > Tomas has tried to give me pointers on that but I'm afraid I don't 
> > > > > understand where to take that. Is there any chance someone who isn't a 
> > > > > self-proclaimed "desktop luddite" could comment?
> > > > 
> > > > There *must* be some place in your shiny desktop environment "disks"
> > > > or something like that where you configure media "known" to your
> > > > desktop environment.
> > > > 
> > > 
> > > Update -- it *almost* worked [...]
> > 
> > This looks bizarre. I think I must leave that to the DE gurus. I guess
> > it has to do with udisks (I think in its current incarnation it's
> > called "udisks2"), but it's beyond my depth.
> > 
> 
> Any way to reset udev?

No, udev doesn't "keep" that info. It's just the piece "routing" kernel
events to whatever user space software needs to know about it (e.g.
"an USB stick has been inserted" or "a block device just appeared" --
as you see, one phisical event may well lead to a whole flurry of
things happening).

> I'm still trying to find a way to make that ghost disk disappear. I am 
> fairly sure a reboot will sort it but solving the problem without 
> understanding it is something I only do when there is a good reason, 
> like some needed service is compromised or something. Not the case here.

But if I were you, I'd see whether udisks is managing your DE's
perception of "disks". See [1]. Do you have a binary called udiskctl?

Another way to try to home in on the problem would be to just "reset"
the DE's memory, e.g. by completely logging out and back in,
without rebooting. Is the ghost gone? Then you'd know your DE is
dreaming. Otherwise it's seeing "something out there".

regards

[1] https://udisks.freedesktop.org/docs/latest/
- -- tomás
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#180568

On Mon, Apr 03, 2017 at 03:05:18PM +0200, tomas@tuxteam.de wrote:
> 
> > I'm still trying to find a way to make that ghost disk disappear. I am 
> > fairly sure a reboot will sort it but solving the problem without 
> > understanding it is something I only do when there is a good reason, 
> > like some needed service is compromised or something. Not the case here.
> 
> But if I were you, I'd see whether udisks is managing your DE's
> perception of "disks". See [1]. Do you have a binary called udiskctl?
> 
> Another way to try to home in on the problem would be to just "reset"
> the DE's memory, e.g. by completely logging out and back in,
> without rebooting. Is the ghost gone? Then you'd know your DE is
> dreaming. Otherwise it's seeing "something out there".
> 

Just had the first occasion to reboot this machine since this issue 
occurred, and I can now report that a reboot solved it. Both thumb 
drives working as expected after a reboot.

Mark

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#179748

On 4/3/17, Mark Fletcher <mark27q1@gmail.com> wrote:
>
> Any way to reset udev? (in a way that doesn't nuke the system and
> require a reboot anyway)
>
> I'm still trying to find a way to make that ghost disk disappear. I am
> fairly sure a reboot will sort it but solving the problem without
> understanding it is something I only do when there is a good reason,
> like some needed service is compromised or something. Not the case here.


I'm sorry to ask, but that caught my eye. I missed where this first
came up. What ghost disk are you dealing with?

Is this anything like that deal I wrote about quite a while back where
rsync was throwing caution to the wind and creating ghost partitions
on the fly?

Rsync would do so when it couldn't find where I was pointing it to for
making backups. It once created some 3 or 4, if not more, of those.
Sometimes it would be because the target partition wasn't mounted so
it would just add things like "_" to the end of *its* new partition,
and then off it went.

I brought it up back when because it appeared to take up some very
real room even though it appeared to somehow possibly being virtual.
It was one good place to check off when hard drive rapidly disappears
for no apparent reason...

Just thinking out loud.. :)

Cindy :)

-- 
Cindy-Sue Causey
Talking Rock, Pickens County, Georgia, USA

* runs with duct tape *

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