From: Ian Jackson <Ian.Jackson@eu.citrix.com>
To: Wei Liu <wei.liu2@citrix.com>
Cc: Anthony PERARD <anthony.perard@citrix.com>,
Xen-devel <xen-devel@lists.xenproject.org>,
George Dunlap <george.dunlap@eu.citrix.com>
Subject: Re: [RFC] libxl hotplug / unplug emulated devices
Date: Fri, 20 May 2016 17:38:44 +0100 [thread overview]
Message-ID: <22335.15764.94991.14504@mariner.uk.xensource.com> (raw)
In-Reply-To: <20160520163451.GB31272@citrix.com>
Wei Liu writes ("[RFC] libxl hotplug / unplug emulated devices"):
> Recently I got a report on xen-users@ about xl network-attach not
> working for HVM guest.
>
> I try to use
> xl network-attach jessie-hvm 'bridge=xenbr0'
> and vif-bridge script complains that it can't add vifXX-emu to bridge.
>
> The underlying issue is that the vif spec provided defaults to
> emulated nic, but libxl only populates a pv nic but doesn't call out
> via QMP to QEMU to populate one. Note that this issue not only affects
> nic device but essentially all device types.
Is it really sensible to offer emulated nic hotplug ? That'd be
presented to the guest as pci hotplug, I guess ?
> I also experimented with block device:
> xl block-attach jessie-hvm 'phy:/dev/DATA/disk,hdb,w'
> and it succeed, only pv disk is populated though.
That's what I would have expected.
Maybe the fix should be that xl network-attach should default hotplug
nics to pv only.
Ian.
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next prev parent reply other threads:[~2016-05-20 16:38 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-20 16:34 [RFC] libxl hotplug / unplug emulated devices Wei Liu
2016-05-20 16:38 ` Ian Jackson [this message]
2016-05-20 16:42 ` Wei Liu
2016-05-20 16:45 ` Andrew Cooper
2016-05-20 16:49 ` Wei Liu
2016-05-20 17:45 ` Wei Liu
2016-05-20 17:58 ` Ian Jackson
2016-05-20 18:04 ` Wei Liu
2016-05-20 18:05 ` Ian Jackson
2016-05-20 18:05 ` Wei Liu
2016-05-23 9:32 ` George Dunlap
2016-05-23 10:28 ` Wei Liu
2016-05-23 10:45 ` Wei Liu
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