Xen users - Aug 2007 - Re: Adding a new virtual block device to a guest

Hi!

It seems i already have udev...

mydom0:~# apt-get install udev
Reading package lists... Done
Building dependency tree... Done
udev is already the newest version.
mydom0:~#

I notice when i mkfs -ext 3 my new vbd with dd, it says it''s not a
block
device.. i have a feeling im doing this wrong. can you suggest steps in:

1. creating a new block device
2. preparing it (mkfs)
3. attaching it (block-attach)
4. mounting it (inside the domU)

Will really help!

On 8/15/07, xen-users-request@lists.xensource.com <
xen-users-request@lists.xensource.com> wrote:
>
>
> Message: 2
> Date: Wed, 15 Aug 2007 02:37:47 +0200
> From: Denny Schierz <linuxmail@4lin.net>
> Subject: Re: [Xen-users] Adding a new virtual block device to a guest
>         os
> To: "''xen-users@lists.xensource.com''"
<xen-users@lists.xensource.com>
> Message-ID: <46C24ADB.6020704@4lin.net>
> Content-Type: text/plain; charset="iso-8859-1"
>
> hi,
>
> Trung Hoang schrieb:
>
> > My system configuration:
> > - dom0 running debian etch w/ xen 3.2 (i think) (how can i find out)
> > - my guest os is running debian etch.
>
> apt-get install udev
>
> and after that, remove the new block-device and add it again.
>
> cu denny
>
> --
> Stoppt den Überwachungswahn - Stoppt den Schäuble Katalog:
> http://www.nopsis.de
>
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hi,

Trung Hoang schrieb:
> It seems i already have udev...
> udev is already the newest version.
> mydom0:~#
is that really the Dom0? If so, you wrong. You need udev inside the
Guest (DomU), cause what you doing is hotplugging a hard disc.

> I notice when i mkfs -ext 3 my new vbd with dd, it says it''s not a
block
> device.. i have a feeling im doing this wrong. can you suggest steps in:
it''s quite normal, you can ignore that warning message.

cu denny

-- 
Stoppt den Überwachungswahn - Stoppt den Schäuble Katalog:
http://www.nopsis.de



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Thats true u need udev inside domU ..

and if that too doesn''t helps .. have ur reboot setting to preserve for
the
domU .. after a block-attach .. reboot your domU.. that should help ....



On 8/16/07, Denny Schierz <linuxmail@4lin.net>
wrote:
>
> hi,
>
> Trung Hoang schrieb:
> > It seems i already have udev...
>
> > udev is already the newest version.
>
> > mydom0:~#
>
> is that really the Dom0? If so, you wrong. You need udev inside the
> Guest (DomU), cause what you doing is hotplugging a hard disc.
>
>
> > I notice when i mkfs -ext 3 my new vbd with dd, it says it''s
not a block
> > device.. i have a feeling im doing this wrong. can you suggest steps
in:
>
> it''s quite normal, you can ignore that warning message.
>
> cu denny
>
> --
> Stoppt den Überwachungswahn - Stoppt den Schäuble Katalog:
> http://www.nopsis.de
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
>

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On Thu, Aug 16, 2007 at 11:01:10AM +1000, Trung Hoang
wrote:
> 
> I notice when i mkfs -ext 3 my new vbd with dd, it says it''s not a
block
> device.. i have a feeling im doing this wrong. can you suggest steps in:
> 
> 1. creating a new block device
> 2. preparing it (mkfs)
> 3. attaching it (block-attach)
> 4. mounting it (inside the domU)
The steps are correct:

dom0> dd if=/dev/zero of=/mnt/storage/xen/diskfile bs=128M count=1 
dom0> xm block-attach 82 tap:aio:/mnt/storage/xen/flux_diskfile sdd w 0
dom0> ssh sles10sp1
domU> cat /proc/partitions |tail -1 # now new space comes up
   8    48     131072 sdd
domU> mkfs.ext3 /dev/sdd # and is usable

Also added to http://fluxcoil.net/doku.php/xen/docs .


Christian

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