From: George Dunlap <george.dunlap@citrix.com>
To: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Anthony Perard <anthony.perard@citrix.com>,
Olaf Hering <olaf@aepfle.de>, Wei Liu <Wei.Liu2@citrix.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: 4.7 qemu regression: HVM guests fail to boot from xvda
Date: Mon, 6 Jun 2016 12:43:00 +0100 [thread overview]
Message-ID: <575561C4.9060902@citrix.com> (raw)
In-Reply-To: <22357.22010.918175.356907@mariner.uk.xensource.com>
On 06/06/16 11:52, Ian Jackson wrote:
> George Dunlap writes ("Re: [Xen-devel] 4.7 qemu regression: HVM guests fail to boot from xvda"):
>> On 03/06/16 12:45, Ian Jackson wrote:
>>> Secondly, the proposal above involves changing both the semantics of
>>> existing `hdtype' parameter values, and the default hdtype value. The
>>> resulting situation would be that even specifying vdev=hda wouldn't
>>> get you an emulated device, by default, unless you specified `hdtype'
>>> too. I don't think that is right.
>>
>> I don't quite understand this.
>>
>> First of all, if I make a disk with "vdev=xvda,hdtype=ide", what
>> happens? I presume that the 'hdtype' field is effectively ignored?
>
> hdtype is not a field in the disk specification. It is a global
> config option specifying what kind of emulated controller to have.
>
> It affects all disks for which the code determines that an emulated
> disk should be provided, but does not affect pv-only disks.
>
> It defaults to `ide'.
Oh, right; sorry I missed that.
/me goes back and re-reads IanJ's mail in that light
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next prev parent reply other threads:[~2016-06-06 11:43 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-30 20:42 4.7 qemu regression: HVM guests fail to boot from xvda Olaf Hering
2016-05-31 11:02 ` George Dunlap
2016-05-31 11:16 ` Olaf Hering
2016-05-31 11:32 ` George Dunlap
2016-05-31 11:41 ` Olaf Hering
2016-05-31 12:00 ` George Dunlap
2016-05-31 12:04 ` Olaf Hering
2016-06-01 13:17 ` Olaf Hering
2016-06-01 21:40 ` Olaf Hering
2016-06-02 11:49 ` Wei Liu
2016-06-02 12:06 ` Olaf Hering
2016-05-31 12:15 ` Jan Beulich
2016-06-01 9:48 ` Wei Liu
2016-06-01 13:34 ` Olaf Hering
2016-06-01 14:11 ` Wei Liu
2016-06-01 14:32 ` Olaf Hering
2016-06-01 15:36 ` Ian Jackson
2016-06-03 10:13 ` George Dunlap
2016-06-03 11:20 ` Olaf Hering
2016-06-03 11:27 ` George Dunlap
2016-06-03 11:45 ` Ian Jackson
2016-06-06 10:39 ` George Dunlap
2016-06-06 10:52 ` Ian Jackson
2016-06-06 11:43 ` George Dunlap [this message]
2016-06-06 12:49 ` George Dunlap
2016-06-07 14:08 ` George Dunlap
2016-06-07 14:27 ` Olaf Hering
2016-06-08 10:17 ` Ian Jackson
2016-06-07 19:06 ` Olaf Hering
2016-06-08 10:18 ` Ian Jackson
2016-06-08 10:23 ` George Dunlap
2016-06-08 10:30 ` Ian Jackson
2016-06-08 10:49 ` George Dunlap
2016-06-08 11:13 ` Olaf Hering
2016-06-08 15:56 ` Konrad Rzeszutek Wilk
2016-06-03 11:50 ` Olaf Hering
2016-05-31 12:10 ` Jan Beulich
2016-05-31 13:41 ` George Dunlap
2016-05-31 14:10 ` Jan Beulich
2016-05-31 16:15 ` Konrad Rzeszutek Wilk
2016-06-08 11:38 ` Wei Liu
2016-06-08 12:04 ` Olaf Hering
2016-06-08 12:09 ` Wei Liu
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