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Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE
From: |
Richard W.M. Jones |
Subject: |
Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE |
Date: |
Mon, 10 Feb 2020 22:12:34 +0000 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Feb 10, 2020 at 03:37:20PM -0600, Eric Blake wrote:
> For now, only 2 of those 16 bits are defined: NBD_INIT_SPARSE (the
> image has at least one hole) and NBD_INIT_ZERO (the image reads
> completely as zero); the two bits are orthogonal and can be set
> independently, although it is easy enough to see completely sparse
> files with both bits set.
I think I'm confused about the exact meaning of NBD_INIT_SPARSE. Do
you really mean the whole image is sparse; or (as you seem to have
said above) that there exists a hole somewhere in the image but we're
not saying where it is and there can be non-sparse parts of the image?
Rich.
--
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- Cross-project NBD extension proposal: NBD_INFO_INIT_STATE, Eric Blake, 2020/02/10
- [qemu PATCH 0/3] NBD_INFO_INIT_STATE extension, Eric Blake, 2020/02/10
- [PATCH 1/3] nbd: Preparation for NBD_INFO_INIT_STATE, Eric Blake, 2020/02/10
- [PATCH 3/3] nbd: Add .bdrv_known_zeroes() server support, Eric Blake, 2020/02/10
- [PATCH 2/3] nbd: Add .bdrv_known_zeroes() client support, Eric Blake, 2020/02/10
- Re: [qemu PATCH 0/3] NBD_INFO_INIT_STATE extension, no-reply, 2020/02/10
- Re: [qemu PATCH 0/3] NBD_INFO_INIT_STATE extension, no-reply, 2020/02/10
- Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE,
Richard W.M. Jones <=
- Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE, Eric Blake, 2020/02/10
- Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE, Richard W.M. Jones, 2020/02/10
- Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE, Eric Blake, 2020/02/11
- Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE, Wouter Verhelst, 2020/02/12
- Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE, Eric Blake, 2020/02/12
- Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE, Richard W.M. Jones, 2020/02/12
- Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE, Eric Blake, 2020/02/12
Re: Cross-project NBD extension proposal: NBD_INFO_INIT_STATE, Max Reitz, 2020/02/17