Extra Image Space, how?

[Frank Murphy]

As my default image space is almost full

  /dev/md0 => 99% Used. Warning. Disk Filling up.

I now want to add empty drives as new image space
/dev/sdc, /dev/sdd  (unformatted as yet, 320gb each)

What's the best method, as the host F14 has selinux-enforcing.
And I don't want to make a mess.

Google hasn't helped much for me:
http://tinyurl.com/2wu5d9q

-- 
Regards,

Frank Murphy
UTF_8 Encoded
Friend of Fedora

[Karol Zapolski]

I use as follows  (note that I use XFS):

1.) Create temporary file that will be extra space.
$> dd if=/dev/zero of=BLAH.tmp bs=1M count=41000

2.) Shut down the running Xen instance.
$> xm shutdown DOM_ID

3.) BACK UP Xen instance in case anything goes wrong.

4.) Append the temporary file to end of image.
$> cat BLAH.tmp >> xen_image_file.img

5.) Set up device mappings and loop device. This will create a
/dev/loop# and /dev/mapper/loop#p# devices to represent the virtual
loop "drive" and partitions, respectively. Use kpartx -l to show what
loop device will be created first.
$> kpartx -a xen_image_file.img

6.) Delete and resize the existing partition
$> fdisk /dev/loop#
d,p,#
n,p,# (proper paramaneters)
w(write)

7.) Run filesystem check to makes sure partition tables are still valid
$> e2fsck /dev/mapper/loop#p#
$> xfs_repair -L /dev/mapper/loop#p# (xfs partition)

8.) Delete mapped partitions and loop device
$> kpartx -d /dev/loop#
$> losetup -d /dev/loop#

9.) Start Xen Server. Begin online-resize of partition.
$> xm create xen_server_name
$> resize2fs /dev/xvda#


Regards
KaZ

On Sun, Nov 7, 2010 at 4:08 AM, Frank Murphy <frankly3d(a)gmail.com&gt; wrote:
>  As my default image space is almost full
>
>   /dev/md0 => 99% Used. Warning. Disk Filling up.
>
>  I now want to add empty drives as new image space
>  /dev/sdc, /dev/sdd  (unformatted as yet, 320gb each)
>
>  What's the best method, as the host F14 has selinux-enforcing.
>  And I don't want to make a mess.
>
>  Google hasn't helped much for me:
>  http://tinyurl.com/2wu5d9q
>
>  --
>  Regards,
>
>  Frank Murphy
>  UTF_8 Encoded
>  Friend of Fedora
>  _______________________________________________
>  virt mailing list
>  virt(a)lists.fedoraproject.org
>  https://admin.fedoraproject.org/mailman/listinfo/virt
>

[Richard W.M. Jones]

I'd suggest virt-resize for this.  (For Karol, not Frank).

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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