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Re: [Qemu-block] [PATCH 0/3] scsi-disk: Device Identification fixes

From: Eric Blake
Subject: Re: [Qemu-block] [PATCH 0/3] scsi-disk: Device Identification fixes
Date: Fri, 25 Jan 2019 14:52:21 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

On 1/25/19 11:46 AM, Kevin Wolf wrote:
> The vendor specific designator in the Device Identification VPD page has
> two problems:
> 1. It defaults to the BlockBackend name (-drive id=...), which everyone
>    expected to be a host detail that the guest never sees
> 2. With -blockdev based setups it defaults to an empty string; if this
>    default is used with more than one disk, the guest OS will interpret
>    this as a single multipath disk.
> We can address problem 2 immediately, and start running the deprecation
> clock for problem 1.
> Related bug reports:
> https://bugzilla.redhat.com/show_bug.cgi?id=1669446
> https://bugzilla.redhat.com/show_bug.cgi?id=1668248
> Kevin Wolf (3):
>   scsi-disk: Don't use empty string as device id
>   scsi-disk: Add device_id property
>   scsi-disk: Deprecate device_id fallback to BlockBackend name

Reviewed-by: Eric Blake <address@hidden>

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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