Re: [PATCH 4/4] iotests/108: Test new refcount rebuild algorithm

2021-03-10 Thread Eric Blake
On 3/10/21 9:59 AM, Max Reitz wrote: > One clear problem with how qcow2's refcount structure rebuild algorithm > used to be before "qcow2: Improve refcount structure rebuilding" was > that it is prone to failure for qcow2 images on block devices: There is > generally unused space after the actual i

[PATCH 4/4] iotests/108: Test new refcount rebuild algorithm

2021-03-10 Thread Max Reitz
One clear problem with how qcow2's refcount structure rebuild algorithm used to be before "qcow2: Improve refcount structure rebuilding" was that it is prone to failure for qcow2 images on block devices: There is generally unused space after the actual image, and if that exceeds what one refblock c