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, could not optimize > for NBD. The NBD specification is now considering an extension that > will allow passing on those semantics; this patch updates the new > protocol bits and 'qemu-nbd --list' output to recognize the bit, as > well as the new errno value possible when using the new flag; while > upcoming patches will improve the client to use the feature when > present, and the server to advertise support for it. > > Signed-off-by: Eric Blake<[email protected]>
Reviewed-by: Vladimir Sementsov-Ogievskiy <[email protected]> -- Best regards, Vladimir _______________________________________________ Libguestfs mailing list [email protected] https://www.redhat.com/mailman/listinfo/libguestfs
