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Re: [Qemu-devel] [PATCH v5 1/7] block: add flag to indicate that no I/O
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [PATCH v5 1/7] block: add flag to indicate that no I/O will be performed |
Date: |
Fri, 18 Mar 2016 12:01:59 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Am 17.03.2016 um 18:51 hat Daniel P. Berrange geschrieben:
> When opening an image it is useful to know whether the caller
> intends to perform I/O on the image or not. In the case of
> encrypted images this will allow the block driver to avoid
> having to prompt for decryption keys when we merely want to
> query header metadata about the image. eg qemu-img info
>
> This flag is enforced at the top level only, since even if
> we don't want todo I/O on the 'qcow2' file payload, the
> underlying 'file' driver will still need todo I/O to read
> the qcow2 header, for example.
>
> Reviewed-by: Eric Blake <address@hidden>
> Signed-off-by: Daniel P. Berrange <address@hidden>
Looks good to me, but it needs a rebase because it conflicts with the
latest changes to qemu-img.
Kevin
- [Qemu-devel] [PATCH v5 0/7] Add new LUKS block driver (for 2.6), Daniel P. Berrange, 2016/03/17
- [Qemu-devel] [PATCH v5 2/7] qemu-img/qemu-io: don't prompt for passwords if not required, Daniel P. Berrange, 2016/03/17
- [Qemu-devel] [PATCH v5 3/7] tests: redirect stderr to stdout for iotests, Daniel P. Berrange, 2016/03/17
- [Qemu-devel] [PATCH v5 4/7] tests: refactor python I/O tests helper main method, Daniel P. Berrange, 2016/03/17
- [Qemu-devel] [PATCH v5 5/7] tests: add output filter to python I/O tests helper, Daniel P. Berrange, 2016/03/17
- [Qemu-devel] [PATCH v5 1/7] block: add flag to indicate that no I/O will be performed, Daniel P. Berrange, 2016/03/17
- Re: [Qemu-devel] [PATCH v5 1/7] block: add flag to indicate that no I/O will be performed,
Kevin Wolf <=
- [Qemu-devel] [PATCH v5 7/7] block: drop support for using qcow[2] encryption with system emulators, Daniel P. Berrange, 2016/03/17
- [Qemu-devel] [PATCH v5 6/7] block: add generic full disk encryption driver, Daniel P. Berrange, 2016/03/17