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Re: [Qemu-block] [PATCH 3/3] hw/i386: Deprecate -drive if=scsi with PC m
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From: |
Markus Armbruster |
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Subject: |
Re: [Qemu-block] [PATCH 3/3] hw/i386: Deprecate -drive if=scsi with PC machine types |
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Date: |
Fri, 27 Jan 2017 20:40:20 +0100 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
Markus Armbruster <address@hidden> writes:
> The PC machines (pc-q35-* pc-i440fx-* pc-* isapc xenfv) automatically
> create lsi53c895a SCSI HBAs and SCSI devices to honor -drive if=scsi.
> For giggles, try -drive if=scsi,bus=25,media=cdrom --- this makes QEMU
> create 25 of them.
>
> lsi53c895a is thoroughly obsolete (PCI Ultra2 SCSI, ca. 2000), and
> currently has no maintainer in QEMU. megasas is a better choice,
> except with old OSes that lack drivers. virtio-scsi is a much better
> choice when you have a driver, but only (newish) Linux comes with one
> in the box. There is no good default that works for all guests.
>
> Encourage users to pick a non-obsolete SCSI HBA that works for them by
> deprecating -drive if=scsi.
>
> Signed-off-by: Markus Armbruster <address@hidden>
Missing: update doc (qemu-options.hx), and possibly qemu-iotests/051.
Will fix.