Re: [Qemu-devel] [RFC PATCH 17/18] nbd: Implement NBD_CMD_WRITE_ZEROES on server

2016-04-09 Thread Alex Bligh
On 8 Apr 2016, at 23:05, Eric Blake wrote: > RFC because there is still discussion on the NBD list about > adding an NBD_OPT_ to let the client suggest server defaults > related to scanning for zeroes during NBD_CMD_WRITE, which may > tweak this patch. > > Upstream NBD

Re: [Qemu-devel] [RFC PATCH 17/18] nbd: Implement NBD_CMD_WRITE_ZEROES on server

2016-04-09 Thread Pavel Borzenkov
On Fri, Apr 08, 2016 at 04:05:57PM -0600, Eric Blake wrote: > RFC because there is still discussion on the NBD list about > adding an NBD_OPT_ to let the client suggest server defaults > related to scanning for zeroes during NBD_CMD_WRITE, which may > tweak this patch. > > Upstream NBD protocol

[Qemu-devel] [RFC PATCH 17/18] nbd: Implement NBD_CMD_WRITE_ZEROES on server

2016-04-08 Thread Eric Blake
RFC because there is still discussion on the NBD list about adding an NBD_OPT_ to let the client suggest server defaults related to scanning for zeroes during NBD_CMD_WRITE, which may tweak this patch. Upstream NBD protocol recently added the ability to efficiently write zeroes without having to