Boot from virtio block device - Revision history

Bsd: added categories

2015-05-31T13:41:23Z

added categories

← Older revision		Revision as of 09:41, 31 May 2015
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	* You will be prompted once again to install the driver.		* You will be prompted once again to install the driver.

			[[Category:Virtio]][[Category:Docs]][[Category:HowTo]]

Bkw at 20:24, 4 April 2010

2010-04-04T20:24:19Z

← Older revision		Revision as of 16:24, 4 April 2010
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	# in guest os, change /boot/grub/menu.list from "root=/dev/sda1" to "root=/dev/vda1", if you are using UUID, then no need to do this step.		# in guest os, change /boot/grub/menu.list from "root=/dev/sda1" to "root=/dev/vda1", if you are using UUID, then no need to do this step.
	# enable para-virtualization by changing "-hda <your_disk_image" to "-drive file=<your_disk_image>,if=virtio,boot=on"		# enable para-virtualization by changing "-hda <your_disk_image" to "-drive file=<your_disk_image>,if=virtio,boot=on"

			note: current debian lenny default kernel (2.6.26-2-amd64) will '''not''' give any output when running "dmesg \| grep virtio"

	== Error 18 ==		== Error 18 ==

Jcheger at 08:56, 3 February 2010

2010-02-03T08:56:07Z

← Older revision		Revision as of 04:56, 3 February 2010
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	= Windows XP =		= Windows XP =
	Windows driver installation is a bit tricky.		Windows driver installation is a bit tricky.
	* In your guest, download ~~thee~~[[WindowsGuestDrivers/Download_Drivers\|Windows driver]]		* In your guest, download the [[WindowsGuestDrivers/Download_Drivers\|Windows driver]]
	* Stop the machine and create a new image that you will add as a second disk		* Stop the machine and create a new image that you will add as a second disk
	kvm-img create -f qcow2 fake.qcow2 1G		kvm-img create -f qcow2 fake.qcow2 1G

Jcheger at 08:55, 3 February 2010

2010-02-03T08:55:48Z

@@ Line 1: / Line 1: @@
-== Introduction ==
+= Introduction =
 Virtio block device is a para-virtualized device for kvm guest. It is different from normal emulated hard drive, because it is simply faster. This small how-to is about how to make a disk para-virtualized and boot from it.
 == Steps ==
@@ Line 33: / Line 34: @@
 == Updating the guest initramfs with the virtio driver ==
 If you are hosting a debian guest then you may want to update its initramfs with the virtio driver as explained in [[Using VirtIO NIC]]

Pierro78 at 12:12, 24 May 2009

2009-05-24T12:12:35Z

← Older revision		Revision as of 08:12, 24 May 2009
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	where vda1 is your boot partition		where vda1 is your boot partition

	== Updating the initramfs with the virtio driver ==		== Updating the guest initramfs with the virtio driver ==
	If you are ~~using~~ debian then you may want to update ~~your~~ initramfs with the virtio driver as explained in [[Using VirtIO NIC]]		If you are hosting a debian guest then you may want to update its initramfs with the virtio driver as explained in [[Using VirtIO NIC]]

Pierro78 at 11:17, 24 May 2009

2009-05-24T11:17:55Z

← Older revision		Revision as of 07:17, 24 May 2009
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	where vda1 is your boot partition		where vda1 is your boot partition

	== ~~updating~~ the initramfs with the virtio driver ==		== Updating the initramfs with the virtio driver ==
	If you are using debian then you may want to update your initramfs with the virtio driver as explained in [[Using VirtIO NIC]]		If you are using debian then you may want to update your initramfs with the virtio driver as explained in [[Using VirtIO NIC]]

Pierro78: initramfs

2009-05-24T11:17:26Z

initramfs

← Older revision		Revision as of 07:17, 24 May 2009
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	where vda1 is your boot partition		where vda1 is your boot partition

			== updating the initramfs with the virtio driver ==
			If you are using debian then you may want to update your initramfs with the virtio driver as explained in [[Using VirtIO NIC]]

WikiSysop at 13:42, 4 February 2009

2009-02-04T13:42:25Z

New page

== Introduction ==
Virtio block device is a para-virtualized device for kvm guest. It is different from normal emulated hard drive, because it is simply faster. This small how-to is about how to make a disk para-virtualized and boot from it.

== Steps ==

# create a disk and install os to it by appending "-hda <your_disk_image>" to your virtual machine
# in your guest os, upgrade kernel to 2.6.25 which contains virtio_* drivers. or ubuntu 8.04 also has it.
# in guest os, change /boot/grub/device.map from "(hd0) /dev/sda" to "(hd0) /dev/vda"
# in guest os, change /boot/grub/menu.list from "root=/dev/sda1" to "root=/dev/vda1", if you are using UUID, then no need to do this step.
# enable para-virtualization by changing "-hda <your_disk_image" to "-drive file=<your_disk_image>,if=virtio,boot=on"

== Error 18 ==

you may experience this error while grub is booting. I solved it by making the /boot the first partition and make it 32MB.

== qcow2 ==

I have problem to boot from qcow2 format image, it will hang while kernel booting. you may convert your disk image to raw format by "qemu-img convert -f qcow2 <your_disk_image> -O raw <a_new_location>".

== Booting with lilo ==

You must add this to your lilo.conf:

boot=/dev/vda
disk=/dev/vda bios=0x80 max-partitions=7

and after your image clausule change:

root=/dev/vda1

where vda1 is your boot partition