Re: [Xen-users] blktap howto

[marek cervenka <cervajs@xxxxxxxxxx>]

> try
>
> disk = [ 'tap:aio:/var/lib/xen/test.img,xvda1,w', 
> 'tap:aio:/var/lib/xen/test.swap,xvda2,w' ]
this does not help

Using IPI Shortcut mode
XENBUS: Timeout connecting to device: device/vbd/51713 (state 3)
XENBUS: Timeout connecting to device: device/vbd/51714 (state 3)
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
VFS: Cannot open root device "xvda1" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on 
unknown-block(0,0)

> Itamar Reis Peixoto
>
> e-mail: itamar@xxxxxxxxxxxxxxxx
> msn: itamarjp@xxxxxxxxxxxxx
> skype: itamarjp
> icq: 81053601
> +55 34 3238 3845
> +55 11 4063 5033
> ----- Original Message ----- From: "marek cervenka" <cervajs@xxxxxxxxxx>
> To: <xen-users@xxxxxxxxxxxxxxxxxxx>
> Sent: Tuesday, March 20, 2007 1:28 PM
> Subject: [Xen-users] blktap howto
>
>
> > hi,
> >
> > i'm trying move from file: based disk to tap:aio but things don't work
> >
> > i have centos4 dom0 with centos4 domU
> > xen 3.0.4-testing changeset:   13138:d401cb96d8a0 self compiled
> >
> > [root@xen linux-2.6.16.38-xen]# grep XEN_BLKDEV_TAP .config
> > CONFIG_XEN_BLKDEV_TAP=m
> >
> > config
> > disk = [ 'file:/var/lib/xen/test.img,hda1,w', 
> > 'file:/var/lib/xen/test.swap,hda2,w' ]
> > changed to
> > disk = [ 'tap:aio:/var/lib/xen/test.img,hda1,w', 
> > 'tap:aio:/var/lib/xen/test.swap,hda2,w' ]
> > blktapctrl do nothing
> >
> > domU cannot start, fail when mounting root
> >
> > what i'm doing wrong?
> > i dont have any kernel module for blktap, is this ok?
> >
> > ---------------------------------------
> > Marek Cervenka
> > Centrum Vypocetni Techniky
> > CVT - http://cvt.fpf.slu.cz
> > FPF SLU OPAVA - http://www.fpf.slu.cz
> > LCNA - http://lcna.slu.cz
> > =======================================
> >
> >
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---------------------------------------
Marek Cervenka
Centrum Vypocetni Techniky
CVT             - http://cvt.fpf.slu.cz
FPF SLU OPAVA   - http://www.fpf.slu.cz
LCNA            - http://lcna.slu.cz
=======================================


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