Snap refresh or new install stuck at 'Run configure hook of "core" snap if present'

[Selene Scriven]

* Joseph Rushton Wakeling <joseph.wakeling at webdrake.net> wrote:
> On 24/02/17 14:08, Martin Winter wrote:
> >Curious if anyone has seen the same. All my Ubuntu 16.04 
> >Servers have this issue.  (Approx 10 Servers which are part of 
> >my CI system)
> 
> Saw the same on a Debian Sid install that I was using to test 
> my ldc2 snap package a couple of days ago.  However, it didn't 
> persist -- a few minutes ago I was able to successfully install 
> the core and ldc2 snaps.

I'm not sure if it's the same thing, but one of my devices got 
stuck for a while yesterday.  Every snap command got stuck for 
about 8 minutes, and I found this in the syslog right before that 
started:

Mar  1 05:55:33 localhost /usr/lib/snapd/snapd[1371]: taskrunner.go:353: DEBUG: Running task 29 on Do: Generate device key

After that finished, snapd started responding again and other 
snap commands were able to complete.  Not sure what was on the 
console at the time.

I noticed this because my automated tests froze while trying to 
get in contact with a fresh-flashed device...  ssh was already 
confirmed to work, and it stopped while attempting to run "snap 
version".


-- Selene