3:42 p.m.
Hi Gianluca
Thank you for the detailed instructions - these were excellent, I wasn't aware of the
"lsinitrd" command before now - thanks!
My VM still sticks at the same point when booting with the virtio-scsi configuration.
Meh!
I'm encouraged that the image booted ok in your environment => points to something
specific to my environment.
I've raised a case with Oracle as we are using OLVM. I don't think they'll
take an interest, let's see. If I get anywhere I'll report back here for the
record.
Thanks again
Angus
---- On Wed, 10 Apr 2024 23:59:22 +0200 Gianluca Cecchi <gianluca.cecchi(a)gmail.com>
wrote ---
On Wed, Apr 10, 2024 at 12:29 PM Angus Clarke <mailto:angus@ajct.uk> wrote:
Hi Gianluca
The software is free from HPE but requires a login, I've shared a link separately.
Thanks for taking an interest
Regards
Angus
Apart from other considerations we are privately sharing, in my env that is based on
Cascade Lake cpu on the host, with local storage domain on filesystem, the appliance is
able to boot and complete the initial configuration phase using your settings: Chipset
i440FX w/Bios for the IDE disk type, OS: RHEL7 x86_64. In my env graphics protocol=VNC,
video type=VGA
The constraint for your tweaks is caused by the appliance's operating system where all
the virtio modules are compiled as modules and they are not included into the initramfs.
So the system doesn't find the boot disk if you set it as virtio or virtio-scsi.
The layout is of bios type with one partition for /boot and other filesystems on LVM, /
included.
To modify the qcow2 image you can use some tools out there, or use manual steps this way:
. connect the disk to an existing rhel 7 / CentOS 7 helper VM where you have lvm2 package
installed
In my case my VM has one disk named /dev/sda and the HPE qcow2 disk when added is then
seen as /dev/sdb and its partitions as /dev/sdb1, ...
IMPORTANT: change the disk names below as it appears the appliance disk in your env,
otherwise you risk to compromise your existing data!!!
IMPORTANT: inside the appliance disk there is a volume group named vg01. Verify there is
no vg01 volume group already defined in your helper VM otherwise you get into troubles
. connect to the helper VM as root user
. the LVM structure of the added disk (PV/VG/LV) should be automatically detected
run the command "vgs" and you should see vg01 volume group listed
run the command "lvs vg01" and you should see some logical volumes listed
. mount the root filesystem of the appliance disk on a directory in your helper VM (on
/media directory in my case)
# mount /dev/vg01/lv_root /media/
. mount the /boot filesystem of the appliance disk under /media/boot
# mount /dev/sdb1 /media/boot/
. mount the /var filesystem of the appliance disk under /media/var
# mount /dev/vg01/lv_var /media/var/
. chroot into the appliance disk env
# chroot /media
. create a file with new kernel driver modules you want to include in the new initramfs
# vi /etc/dracut.conf.d/virtio.conf
its contents have to be this one line below (similar to the already present
platform.conf):
# cat /etc/dracut.conf.d/virtio.conf
add_drivers+="virtio virtio_blk virtio_scsi"
. backup the original initramfs
# cp -p /boot/initramfs-3.10.0-1062.1.2.el7.x86_64.img
/boot/initramfs-3.10.0-1062.1.2.el7.x86_64.bak
. replace the initramfs
# dracut -fv /boot/initramfs-3.10.0-1062.1.2.el7.x86_64.img 3.10.0-1062.1.2.el7.x86_64
...
*** Creating image file done ***
*** Creating initramfs image file '/boot/initramfs-3.10.0-1062.1.2.el7.x86_64.img'
done ***
#
. verify the new contents include virtio modules
# lsinitrd /boot/initramfs-3.10.0-1062.1.2.el7.x86_64.img | grep virtio
-rw-r--r-- 1 root root 7876 Sep 30 2019
usr/lib/modules/3.10.0-1062.1.2.el7.x86_64/kernel/drivers/block/virtio_blk.ko.xz
-rw-r--r-- 1 root root 12972 Sep 30 2019
usr/lib/modules/3.10.0-1062.1.2.el7.x86_64/kernel/drivers/char/virtio_console.ko.xz
-rw-r--r-- 1 root root 14304 Sep 30 2019
usr/lib/modules/3.10.0-1062.1.2.el7.x86_64/kernel/drivers/net/virtio_net.ko.xz
-rw-r--r-- 1 root root 8188 Sep 30 2019
usr/lib/modules/3.10.0-1062.1.2.el7.x86_64/kernel/drivers/scsi/virtio_scsi.ko.xz
drwxr-xr-x 2 root root 0 Apr 10 21:14
usr/lib/modules/3.10.0-1062.1.2.el7.x86_64/kernel/drivers/virtio
-rw-r--r-- 1 root root 4552 Sep 30 2019
usr/lib/modules/3.10.0-1062.1.2.el7.x86_64/kernel/drivers/virtio/virtio.ko.xz
-rw-r--r-- 1 root root 9904 Sep 30 2019
usr/lib/modules/3.10.0-1062.1.2.el7.x86_64/kernel/drivers/virtio/virtio_pci.ko.xz
-rw-r--r-- 1 root root 8332 Sep 30 2019
usr/lib/modules/3.10.0-1062.1.2.el7.x86_64/kernel/drivers/virtio/virtio_ring.ko.xz
. exit the chroot environment
# exit
. Now you exited from the chroot env, umount the appliance disk filesystems
# umount /media/var /media/boot
# umount /media
. disconnect the disk from the helper VM
. create a Red Hat 7.x VM in your oVirt/OLVM env as Q35 / Bios VM with the appliance disk
configured as virtio or virtio-scsi disk
. boot the VM and it should work, apart from the current problem of the display in your
env
Eventually if it boots ok and at the end it works, push HPE to add virtio modules that are
quite the standard for disk in Qemu/KVM based env.
The virtio network starts already ok because it is activated after boot as a module and it
is not needed in the initrd phase but only after it.
Gianluca