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Re: [Xen-users] adding fourth device to pvhvm config causes DomU launch fail @ "device_disk_add: device already exists in xenstore" ?
El 22/2/16 a les 17:21, suse.dev@xxxxxx ha escrit:
> This one works
>
> ...
> disk = [ 'phy:/dev/VG0/tEFI,hda,w',
> 'phy:/dev/VG0/tBOOT,hdb,w',
> 'phy:/dev/VG0/tSWAP,hdc,w',
> 'phy:/dev/VG0/tROOT,xvde,w',
>
> 'file:/home/test/archlinux-2016.02.01-dual.iso,hdd:cdrom,r',]
> ...
>
> The 1st 3 apparently have to be 'hdX'
Hm, what error do you get if you translate all them to xvd* except for
the CD device?
> The 4th has to be ">=" 'xvde'
> The cdr has to be 'hdd'; 'xvdd' does not work.
AFAICT there's some quirk on Linux when running as a PVHVM guest, and
the CD device always has to be emulated. The reason behind this seem to
be that using a PV CD on older Xen versions was broken:
http://lxr.free-electrons.com/source/drivers/block/xen-blkfront.c#L1604
Roger.
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