[Libvir] RFC: PATCH 3/5: verbose job progress in virsh

[Richard W.M. Jones]

Daniel P. Berrange wrote:
> This patch updates virsh to make use of any APIs with
> new *Job variants. This means the 'create', 'start',
> 'save', 'restore', 'dump', 'net-create' and 'net-start'
> methods all now take a '--verbose' option. If this
> option is given, it will invoke the *Job variant of
> the API and print out increment progress information.
> 
> eg, As an example of a job which has a bounded time,
> 
>    $ ./virsh --connect test:///default save --verbose test foo
>    save [=====       18%          ] Duration: 9 s, ETA: 41 s
>    error: Cancelled domain save operation
> 
> eg, As an example which is unbounded
> 
>    $ ./virsh --connect test:///default save --verbose test foo
>    save [         =               ] Duration: 9 s
>    error: Cancelled domain save operation
> 
> In the latter case, the '=' will bounce back & forth while
> the job is running.
> 
> Both cases illustrate how the 'Ctrl-C' / SIGINT handler is
> hooked up such that 'virJobCancel' is run. Pressing Ctrl-C
> twice in quick succession will still immediately exit the
> program - useful if cancellation fails for some reason.

Looks sensible.

Rich.

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