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From: Artyom Tarasenko <atar4qemu@googlemail.com>
Date: Mon, 3 May 2010 19:29:45 +0200
Message-ID: <o2ifb8d4f71005031029la188a663ja7085b718e95d228@mail.gmail.com>
Subject: Re: [Qemu-devel] [PATCH] block: add logical_block_size property
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To: Christoph Hellwig <hch@lst.de>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>, qemu-devel@nongnu.org

2010/3/4 Christoph Hellwig <hch@lst.de>:
>
> Add a logical block size attribute as various guest side tools only
> increase the filesystem sector size based on it, not the advisory
> physical block size.
>
> For scsi we already have support for a different logical block size
> in place for CDROMs that we can built upon. =A0Only my recent block
> device characteristics VPD page needs some fixups. =A0Note that we
> leave the logial block size for CDROMs hardcoded as the 2k value
> is expected for it in general.

By "general" do you mean qemu, or the guests?

Solaris 2.0 - 2.5.1 and SunOS 4.x expect CDROM block size of 512 bytes.
Would have been nice to have the block size for CDROM configurable too.

Currently the CDROMs mentioned above have to be plugged as hard disks
in order to function.

--=20
Regards,
Artyom Tarasenko

solaris/sparc under qemu blog: http://tyom.blogspot.com/