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Date: Tue, 17 Jun 2014 13:15:29 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] block/iscsi: use 16 byte CDBs only when
 necessary
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To: Peter Lieven <pl@kamp.de>, Michael Tokarev <mjt@tls.msk.ru>, ronnie sahlberg <ronniesahlberg@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, Stefan Hajnoczi <stefanha@redhat.com>

Il 17/06/2014 08:14, Peter Lieven ha scritto:
>>
>
> BTW, while debugging a case with a bigger storage supplier I found
> that open-iscsi seems to do exactly this undeterministic behaviour.
> I have a 3TB LUN. If I access < 2TB sectors it uses READ10/WRITE10 and
> if I go beyond 2TB it changes to READ16/WRITE16.

Isn't that exactly what your latest patch does for >64K sector writes? :)

It's the reason why I haven't merged that patch yet.

Paolo