[libvirt] [PATCH v2 5/6] virsh: Report errors from stream callbacks

[Daniel P. Berrange]

On Thu, Jun 01, 2017 at 03:43:06PM +0200, Michal Privoznik wrote:
> On 06/01/2017 03:39 PM, Daniel P. Berrange wrote:
> > On Thu, Jun 01, 2017 at 02:02:13PM +0200, Michal Privoznik wrote:
> >> There are couple of callbacks we pass to virStreamSendAll(),
> >> virStreamRecvAll() or its sparse variants. However, none of these
> >> callbacks reports error if one occurs and neither do the
> >> virStream* functions leaving user with very unhelpful error
> >> message:
> >>
> >>   error: cannot receive data from volume fedora.img
> >>   error: An error occurred, but the cause is unknown
> > 
> > If we change the code to honour errno set in the callbacks,
> > we only need to deal with ensuring  virFileInData sets
> > the errno correctly.
> 
> Okay, makes sense. Will post v3.
> 
> Meanwhile, do you have any clever idea on this?
> 
> https://www.redhat.com/archives/libvir-list/2017-June/msg00015.html

Hmm, no bright ideas, without spending some time peering into the
code.

Regards,
Daniel
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