From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Jonathan Phenix <jonathan.phenix@videotron.ca>
Subject: Re: [Qemu-devel] Block driver and constant sector size
Date: Fri, 18 May 2007 21:41:35 +0100 [thread overview]
Message-ID: <200705182141.36421.paul@codesourcery.com> (raw)
In-Reply-To: <4645ECE2.4050408@videotron.ca>
On Saturday 12 May 2007, Jonathan Phenix wrote:
> Hi,
>
> currently the block driver in qemu only handles blocks (or sectors)
> which are 512 bytes long,
>...
> Then, each probe functions should be modified to reject sector size
> which is not 512 bytes, except for the raw block driver, which will be
> modified to accept any block sizes. This change would probably solve the
> whole problem without having a negative impact on the rest of the code.
>
> Is it the right way to solve the problem? If this solution is accepted,
> I will code it and submit a patch.
Seems like it might just be simpler to have the qemu block ABI use bytes
rather than blocks. Maybe with some common helper functions for doing R/M/W
on hard sectored devices.
By adding variable sized sectors you're just shifting complexity from the
block backends to the device emulation.
Paul
next prev parent reply other threads:[~2007-05-18 20:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-12 16:35 [Qemu-devel] Block driver and constant sector size Jonathan Phenix
2007-05-18 20:41 ` Paul Brook [this message]
2007-05-20 20:27 ` Jonathan Phenix
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