On 8/30/19 1:07 PM, Vladimir Sementsov-Ogievskiy wrote:
> 23.08.2019 17:37, Eric Blake wrote:
>> Commit fe0480d6 and friends added BDRV_REQ_NO_FALLBACK as a way to
>> avoid wasting time on a preliminary write-zero request that will later
>> be rewritten by actual data, if it is known that the write
23.08.2019 17:37, Eric Blake wrote:
> Commit fe0480d6 and friends added BDRV_REQ_NO_FALLBACK as a way to
> avoid wasting time on a preliminary write-zero request that will later
> be rewritten by actual data, if it is known that the write-zero
> request will use a slow fallback; but in doing so, co
31.08.2019 2:37, Eric Blake wrote:
> On 8/30/19 1:07 PM, Vladimir Sementsov-Ogievskiy wrote:
>> 23.08.2019 17:37, Eric Blake wrote:
>>> Commit fe0480d6 and friends added BDRV_REQ_NO_FALLBACK as a way to
>>> avoid wasting time on a preliminary write-zero request that will later
>>> be rewritten by a
On 8/30/19 1:07 PM, Vladimir Sementsov-Ogievskiy wrote:
> 23.08.2019 17:37, Eric Blake wrote:
>> Commit fe0480d6 and friends added BDRV_REQ_NO_FALLBACK as a way to
>> avoid wasting time on a preliminary write-zero request that will later
>> be rewritten by actual data, if it is known that the write
23.08.2019 17:37, Eric Blake wrote:
> Commit fe0480d6 and friends added BDRV_REQ_NO_FALLBACK as a way to
> avoid wasting time on a preliminary write-zero request that will later
> be rewritten by actual data, if it is known that the write-zero
> request will use a slow fallback; but in doing so, co
Commit fe0480d6 and friends added BDRV_REQ_NO_FALLBACK as a way to
avoid wasting time on a preliminary write-zero request that will later
be rewritten by actual data, if it is known that the write-zero
request will use a slow fallback; but in doing so, could not optimize
for NBD. The NBD specifica