[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extensio
From: |
Alex Bligh |
Subject: |
Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension |
Date: |
Tue, 5 Apr 2016 08:13:45 +0100 |
On 5 Apr 2016, at 00:08, Wouter Verhelst <address@hidden> wrote:
>
> if bit 0 in the latter field is set, that means the block is allocated
> on the original device
> if bit 1 is set, that means the block is allocated on the first-level
> snapshot
> if bit 2 is set, that means the block is allocated on the second-level
> snapshot
This is what I originally thought Eric was proposing. The issue
is that in common servers the 'dirtiness' is at a different
allocation / blocksize from the allocation status. So you
really want 2 different bitmaps.
--
Alex Bligh
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, (continued)
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Alex Bligh, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Paolo Bonzini, 2016/04/05
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Alex Bligh, 2016/04/05
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Paolo Bonzini, 2016/04/05
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Alex Bligh, 2016/04/05
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Paolo Bonzini, 2016/04/05
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Wouter Verhelst, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Eric Blake, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Wouter Verhelst, 2016/04/05
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Wouter Verhelst, 2016/04/05
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension,
Alex Bligh <=
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Alex Bligh, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Denis V. Lunev, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Alex Bligh, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Denis V. Lunev, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Alex Bligh, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Denis V. Lunev, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Eric Blake, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Denis V. Lunev, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Alex Bligh, 2016/04/04
- Re: [Qemu-devel] [Nbd] [PATCH v2] doc: Add NBD_CMD_BLOCK_STATUS extension, Eric Blake, 2016/04/04