Xen users - Feb 2008 - Problem with p2v - device /dev/ida/c0d0p2

Hello,

I''m doing one emergencial migrate for one very old machine, because we
will have one IMPLOSION (!!!) very close from here, and I''m thinking
that this old IDE disk will not survive... :-/

[root@registro-2 /root]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/ida/c0d0p2       3.8G  2.3G  1.4G  62% /
/dev/ida/c0d0p8        26G   20G  4.4G  82% /data
/dev/ida/c0d0p6       984M  128k  934M   0% /tmp
/dev/ida/c0d0p7       984M  166M  768M  18% /var

Red Hat Linux release 6.2 (Zoot)
Kernel 2.4.16 on a 4-processor i686

I did one copy with ''dd'' of device /dev/ida/c0d0 and imported
inside one
LVM device, called "/dev/Vol_LVM/registro-2", but I''m getting
problems
to boot this VM:

Booting from Hard Disk
Boot from Hard Disk Failed: Could not read the boot disk
FATAL: no bootable device

I don''t know how can I configure the /etc/fstab of this VM... using
"/dev/ida/c0d0px" or the good and old "/dev/hdax".
I''ve tried a lot of
combinations, but I really can''t boot this:

name = "registro-2"
builder = "hvm"
memory = "500"
disk = [
"phy:/dev/Vol_LVM/registro-2,hda2,w","phy:/dev/Vol_LVM/registro-2,hda5,w"
]
root = "/dev/ida/hda2 ro"
extra = "3"
vif = [ "type=ioemu, mac=00:16:3e:60:92:5d, bridge=xenbr0", ]

I''ve tried too:
root = "/dev/ida/c0d0p2 ro"
disk = [
"phy:/dev/Vol_LVM/registro-2,c0d0p2,w","phy:/dev/Vol_LVM/registro-2,c0d0p5,w"
]

But without success.
Can anyone help me?

Thanks

-- 
Tiago Cruz
http://everlinux.com
Linux User #282636



_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Hello, using:

disk = [ "phy:/dev/Vol_LVM/registro-2,hda,w",]

The boot as been better :) But I have one kernel-panic because kernel
can''t mount the root filesystem.

Using rsync+ssh and copy all "/" from inside LVM device, I
can''t boot
too ("Searching for boot device...").

Question: Whats the better way to "migrate" the MBR? Using dd getting
the 512 bytes was not work (the lilo was frozen with a "LI" screen).

Thanks!!

On Thu, 2008-02-14 at 11:46 -0200, Tiago Cruz wrote:
> [root@registro-2 /root]# df -h
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/ida/c0d0p2       3.8G  2.3G  1.4G  62% /
> /dev/ida/c0d0p8        26G   20G  4.4G  82% /data
> /dev/ida/c0d0p6       984M  128k  934M   0% /tmp
> /dev/ida/c0d0p7       984M  166M  768M  18% /var
> 
> Red Hat Linux release 6.2 (Zoot)
> Kernel 2.4.16 on a 4-processor i686


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Le Thu, Feb 14, 2008 at 06:01:19PM -0200, Tiago Cruz [tiagocruz@forumgdh.net] a
écrit:
> Hello, using:
> 
> disk = [ "phy:/dev/Vol_LVM/registro-2,hda,w",]
> 
> The boot as been better :) But I have one kernel-panic because kernel
> can''t mount the root filesystem.
> 
> Using rsync+ssh and copy all "/" from inside LVM device, I
can''t boot
> too ("Searching for boot device...").
> 
> Question: Whats the better way to "migrate" the MBR? Using dd
getting
> the 512 bytes was not work (the lilo was frozen with a "LI"
screen).
You didn''t say if you use HVM or PV for the domain.
If going HVM, you should check that your kernel and/or initrd contains
support for IDE (hdax). And also update the "root=xxx" parameter to be
the correct hdaX


-- 
Dominique Rousseau 
Neuronnexion, Prestataire Internet & Intranet
57, route de Paris 80000 Amiens
tel: 03 22 71 61 90 - fax: 03 22 71 61 99 - http://www.neuronnexion.fr

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

On Thursday 14 February 2008 08:46:06 am Tiago Cruz
wrote:
> I''m doing one emergencial migrate for one very old machine,
because we
> will have one IMPLOSION (!!!) very close from here, and I''m
thinking
> that this old IDE disk will not survive... :-/
>
> [root@registro-2 /root]# df -h
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/ida/c0d0p2       3.8G  2.3G  1.4G  62% /
> /dev/ida/c0d0p8        26G   20G  4.4G  82% /data
> /dev/ida/c0d0p6       984M  128k  934M   0% /tmp
> /dev/ida/c0d0p7       984M  166M  768M  18% /var
>
> Red Hat Linux release 6.2 (Zoot)
> Kernel 2.4.16 on a 4-processor i686
Very old, probably doesn''t have a xenified version of the kernel.
> I did one copy with ''dd'' of device /dev/ida/c0d0 and
imported inside one
I assume that means you copied the whole disk, not just a partition.
> LVM device, called "/dev/Vol_LVM/registro-2", but I''m
getting problems
> to boot this VM:
>
> Booting from Hard Disk
> Boot from Hard Disk Failed: Could not read the boot disk
> FATAL: no bootable device
>
> I don''t know how can I configure the /etc/fstab of this VM...
using
> "/dev/ida/c0d0px" or the good and old "/dev/hdax".
I''ve tried a lot of
> combinations, but I really can''t boot this:
>
> name = "registro-2"
> builder = "hvm"
> memory = "500"
> disk = [
>
"phy:/dev/Vol_LVM/registro-2,hda2,w","phy:/dev/Vol_LVM/registro-2,hda5,w"
]
> root = "/dev/ida/hda2 ro"
> extra = "3"
> vif = [ "type=ioemu, mac=00:16:3e:60:92:5d, bridge=xenbr0", ]
>
> I''ve tried too:
> root = "/dev/ida/c0d0p2 ro"
> disk = [
>
"phy:/dev/Vol_LVM/registro-2,c0d0p2,w","phy:/dev/Vol_LVM/registro-2,c0d0p5,
>w" ]
Since there is probably not a xen version of the kernel, you want hvm, so you 
are missing the lines:

kernel = "/usr/lib/xen/boot/hvmloader"
device_model = "/usr/lib/xen/bin/qemu-dm"

and the disk line should be as in your followup post:

disk = [ "phy:/dev/Vol_LVM/registro-2,hda,w",]

You probably don''t need the root= line, then. The
''dd'' got the MBR.
Good luck.


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Solved.

On Sat, 2008-02-16 at 22:29 -0500, jim burns wrote:
> > Red Hat Linux release 6.2 (Zoot)
> > Kernel 2.4.16 on a 4-processor i686
> 
> Very old, probably doesn''t have a xenified version of the kernel.
Yeah. The original kernel of Red Hat 6.2 was 2.2.x series, and not work
on Xen. This 2.4.x was one special prepared for xen.

> You probably don''t need the root= line, then. The
''dd'' got the MBR.
> Good luck.
Yeah... the ''root='' line was not working. I''ve got
one image from Red
Hat 6.2 on vmware website, and I''ve used this to solve my problem.

Thanks

-- 
Tiago Cruz
http://everlinux.com
Linux User #282636



_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users