Re: [Qemu-devel] [PATCH v2 1/5] qapi/block: Add "fatal" to BLOCK_IMAGE_CORRUPTED

[Eric Blake]

On 09/05/2014 08:07 AM, Max Reitz wrote:
> Not every BLOCK_IMAGE_CORRUPTED event must be fatal; for example, when
> reading from an image, they should generally not be. Nonetheless, even
> an image only read from may of course be corrupted and this can be
> detected during normal operation. In this case, a non-fatal event should
> be emitted, but the image should not be marked corrupt (in accordance to
> "fatal" set to false).
> 

Question - what happens if management misses the signal?  For example,
if libvirt opens qemu on a read-only image, then goes away, then
corruption is detected, then libvirt reconnects.  Does query-block need
to also be updated to report whether a read-only BDS is currently
detected as fatal, but that an event has already been delivered?

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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