[libvirt] [PATCH 2/3] Fix shrinking volumes with the delta flag

[John Ferlan]

On 05/27/2015 11:08 AM, Ján Tomko wrote:
> This never worked.
> 
> In 0.9.10 when this API was introduced, it was intended that
> the SHRINK flag combined with DELTA would shrink the volume by
> the specified capacity (to avoid passing negative numbers).
> See commit 055bbf4.
> 
> When the SHRINK flag was finally implemented for the first backend
> in 1.2.13 (commit aa9aa6a), it was only implemented for the absolute
> values and with the delta flag the volume is always extended,
> regardless of the SHRINK flag.
> 
> Treat the SHRINK flag as a minus sign when used together with DELTA,
> to allow shrinking volumes as was documented in the API since 0.9.10.
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1220213
> ---
>  src/storage/storage_driver.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 

ACK (seemingly safe too)

John