[2/2] snapshot/tests: Try loadvm twice

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

It's legal to loadvm twice, modify the existing save/loadvm test
to do it twice.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 tests/qemu-iotests/068     | 2 +-
 tests/qemu-iotests/068.out | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

On Fri, Aug 25, 2017 at 03:19:40PM +0100, Dr. David Alan Gilbert (git) wrote:
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
> 
> It's legal to loadvm twice, modify the existing save/loadvm test
> to do it twice.
> 
> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

Reviewed-by: Peter Xu <peterx@redhat.com>

(a question below though)

> ---
>  tests/qemu-iotests/068     | 2 +-
>  tests/qemu-iotests/068.out | 4 ++++
>  2 files changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/tests/qemu-iotests/068 b/tests/qemu-iotests/068
> index cfa0f2aed5..e7fca6a494 100755
> --- a/tests/qemu-iotests/068
> +++ b/tests/qemu-iotests/068
> @@ -78,7 +78,7 @@ for extra_args in \
>      # Give qemu some time to boot before saving the VM state
>      { sleep 1; printf "savevm 0\nquit\n"; } | _qemu $extra_args
>      # Now try to continue from that VM state (this should just work)
> -    echo quit | _qemu $extra_args -loadvm 0
> +    { sleep 1; printf "loadvm 0\nloadvm 0\nquit\n"; } | _qemu $extra_args -S

Curious about why there are both "sleep 1" and "-S" added - I thought
"-S" means CPU won't really run, then why wait for one more second?

>  done
>  
>  # success, all done
> diff --git a/tests/qemu-iotests/068.out b/tests/qemu-iotests/068.out
> index aa063cf711..f07a938a38 100644
> --- a/tests/qemu-iotests/068.out
> +++ b/tests/qemu-iotests/068.out
> @@ -7,6 +7,8 @@ QEMU X.Y.Z monitor - type 'help' for more information
>  (qemu) savevm 0
>  (qemu) quit
>  QEMU X.Y.Z monitor - type 'help' for more information
> +(qemu) loadvm 0
> +(qemu) loadvm 0
>  (qemu) quit
>  
>  === Saving and reloading a VM state to/from a qcow2 image (-object iothread,id=iothread0 -set device.hba0.iothread=iothread0) ===
> @@ -16,5 +18,7 @@ QEMU X.Y.Z monitor - type 'help' for more information
>  (qemu) savevm 0
>  (qemu) quit
>  QEMU X.Y.Z monitor - type 'help' for more information
> +(qemu) loadvm 0
> +(qemu) loadvm 0
>  (qemu) quit
>  *** done
> -- 
> 2.13.5
>

* Peter Xu (peterx@redhat.com) wrote:
> On Fri, Aug 25, 2017 at 03:19:40PM +0100, Dr. David Alan Gilbert (git) wrote:
> > From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
> > 
> > It's legal to loadvm twice, modify the existing save/loadvm test
> > to do it twice.
> > 
> > Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
> 
> Reviewed-by: Peter Xu <peterx@redhat.com>
> 
> (a question below though)
> 
> > ---
> >  tests/qemu-iotests/068     | 2 +-
> >  tests/qemu-iotests/068.out | 4 ++++
> >  2 files changed, 5 insertions(+), 1 deletion(-)
> > 
> > diff --git a/tests/qemu-iotests/068 b/tests/qemu-iotests/068
> > index cfa0f2aed5..e7fca6a494 100755
> > --- a/tests/qemu-iotests/068
> > +++ b/tests/qemu-iotests/068
> > @@ -78,7 +78,7 @@ for extra_args in \
> >      # Give qemu some time to boot before saving the VM state
> >      { sleep 1; printf "savevm 0\nquit\n"; } | _qemu $extra_args
> >      # Now try to continue from that VM state (this should just work)
> > -    echo quit | _qemu $extra_args -loadvm 0
> > +    { sleep 1; printf "loadvm 0\nloadvm 0\nquit\n"; } | _qemu $extra_args -S
> 
> Curious about why there are both "sleep 1" and "-S" added - I thought
> "-S" means CPU won't really run, then why wait for one more second?

Mostly because I copied it from the savevm line above :-)

Dave

> >  done
> >  
> >  # success, all done
> > diff --git a/tests/qemu-iotests/068.out b/tests/qemu-iotests/068.out
> > index aa063cf711..f07a938a38 100644
> > --- a/tests/qemu-iotests/068.out
> > +++ b/tests/qemu-iotests/068.out
> > @@ -7,6 +7,8 @@ QEMU X.Y.Z monitor - type 'help' for more information
> >  (qemu) savevm 0
> >  (qemu) quit
> >  QEMU X.Y.Z monitor - type 'help' for more information
> > +(qemu) loadvm 0
> > +(qemu) loadvm 0
> >  (qemu) quit
> >  
> >  === Saving and reloading a VM state to/from a qcow2 image (-object iothread,id=iothread0 -set device.hba0.iothread=iothread0) ===
> > @@ -16,5 +18,7 @@ QEMU X.Y.Z monitor - type 'help' for more information
> >  (qemu) savevm 0
> >  (qemu) quit
> >  QEMU X.Y.Z monitor - type 'help' for more information
> > +(qemu) loadvm 0
> > +(qemu) loadvm 0
> >  (qemu) quit
> >  *** done
> > -- 
> > 2.13.5
> > 
> 
> -- 
> Peter Xu
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK