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Re: [Qemu-block] [Qemu-devel] [PATCH] raw-posix: add 'offset' and 'size'

From: Paolo Bonzini
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH] raw-posix: add 'offset' and 'size' options
Date: Mon, 3 Oct 2016 11:20:44 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0

On 03/10/2016 10:52, Daniel P. Berrange wrote:
> On Sun, Oct 02, 2016 at 09:13:29PM +0200, Tomáš Golembiovský wrote:
>> Added two new options 'offset' and 'size'. This makes it possible to use
>> only part of the file as a device. This can be used e.g. to limit the
>> access only to single partition in a disk image or use a disk inside a
>> tar archive (like OVA).
>> For now this is only possible for files in read-only mode. It should be
>> possible to extend it later to allow read-write mode, but would probably
>> require that the size of the device is kept constant (i.e. no resizing).
>> Signed-off-by: Tomáš Golembiovský <address@hidden>
>> ---
>>  block/raw-posix.c | 97 
>> +++++++++++++++++++++++++++++++++++++++++++++++++++----
>>  1 file changed, 91 insertions(+), 6 deletions(-)
> An equivalent change is needed to raw-win32.c

Actually, it should be done _only_ in block/raw_bsd.c.


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