[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-block] [Qemu-devel] [RFC PATCH 18/18] nbd: Implement NBD_CMD_W
|
From: |
Alex Bligh |
|
Subject: |
Re: [Qemu-block] [Qemu-devel] [RFC PATCH 18/18] nbd: Implement NBD_CMD_WRITE_ZEROES on client |
|
Date: |
Sun, 10 Apr 2016 06:27:31 +0100 |
On 10 Apr 2016, at 00:17, Eric Blake <address@hidden> wrote:
> No, the code is correct. In both functions, the logic is that if the
> lower-level knows that the server respects FUA, then it clears the flag
> before returning (flags is passed by reference, not value). Then at
> this higher level, if FUA is still set, the server is too old, so we do
> a fallback flush to get the same semantics for the write in question,
> but at higher cost of a full flush.
OK, thanks.
--
Alex Bligh
signature.asc
Description: Message signed with OpenPGP using GPGMail