** Description changed:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
In working on the ec2/uec ramdisk-less boot [1] I recently verified that
the -virtual kernel has sufficient disk drivers to boot on hardware
presented by UEC.
I'd like to request that we have driver support built in to -virtual for
the other reasonable kvm interfaces. kvm man page shows the following as
options for '-drive if=':
- ide, scsi, sd, mtd, floppy, pflash, virtio.
+ ide, scsi, sd, mtd, floppy, pflash, virtio.
I quickly tested vmlinuz-2.6.32-7-server kernel for amd64 and found:
- - [X] kvm if=ide (this is the same as '-hda <file>')
- - [ ] kvm if=scsi (used by eucalyptus)
- - [ ] kvm if=sd
- - [ ] kvm if=mtd
- - [ ] kvm if=floppy
- - [ ] kvm if=pflash
- - [ ] kvm if=virtio
The 'X' marks success. I previously believed 'scsi' to have worked, but
couldn't get it to function today. Of the list above, the ones that I
think are 'reasonable' or relavant are:
- ide
- scsi
- virtio
+ ide
+ scsi
+ virtio
To test, I had disk.img.dist as a root filesystem that would boot. Then:
$ qemu-img create -f qcow2 -b disk.img.dist disk.img
$ kvm -drive file=disk.img,bus=0,index=0,if=${iface} \
- -kernel lucid-uec-amd64-vmlinuz-virtual \
- -append "quiet nosplash single"
+ -kernel lucid-uec-amd64-vmlinuz-virtual \
+ -append "nosplash single"
Note: I'm not certain on the correctness of 'bus=0,index=0' or
effectiveness for all drivers.
- --
[1] https://wiki.ubuntu.com/ServerLucidCloudKernelRamdisk
- affects ubuntu/linux
- assignee jjohansen
- importance low
- subscribe smoser
- subscribe kirkland
+ affects ubuntu/linux
+ assignee jjohansen
+ importance low
+ subscribe smoser
+ subscribe kirkland
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
iEYEARECAAYFAksfyksACgkQDZzbdwr3wEc1TwCfUuCctW1QwCv9IlpIIRO48aWE
9uAAoI0ehIkghJSqvP02m296e0nMPAgO
=O7db
-----END PGP SIGNATURE-----
** Description changed:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
In working on the ec2/uec ramdisk-less boot [1] I recently verified that
the -virtual kernel has sufficient disk drivers to boot on hardware
presented by UEC.
I'd like to request that we have driver support built in to -virtual for
the other reasonable kvm interfaces. kvm man page shows the following as
options for '-drive if=':
ide, scsi, sd, mtd, floppy, pflash, virtio.
I quickly tested vmlinuz-2.6.32-7-server kernel for amd64 and found:
- - [X] kvm if=ide (this is the same as '-hda <file>')
- - [ ] kvm if=scsi (used by eucalyptus)
- - [ ] kvm if=sd
- - [ ] kvm if=mtd
- - [ ] kvm if=floppy
- - [ ] kvm if=pflash
- - [ ] kvm if=virtio
The 'X' marks success. I previously believed 'scsi' to have worked, but
couldn't get it to function today. Of the list above, the ones that I
think are 'reasonable' or relavant are:
ide
scsi
virtio
To test, I had disk.img.dist as a root filesystem that would boot. Then:
$ qemu-img create -f qcow2 -b disk.img.dist disk.img
$ kvm -drive file=disk.img,bus=0,index=0,if=${iface} \
-kernel lucid-uec-amd64-vmlinuz-virtual \
- -append "nosplash single"
+ -append "nosplash single root=/dev/sda1"
Note: I'm not certain on the correctness of 'bus=0,index=0' or
effectiveness for all drivers.
- --
[1] https://wiki.ubuntu.com/ServerLucidCloudKernelRamdisk
affects ubuntu/linux
assignee jjohansen
importance low
subscribe smoser
subscribe kirkland
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
iEYEARECAAYFAksfyksACgkQDZzbdwr3wEc1TwCfUuCctW1QwCv9IlpIIRO48aWE
9uAAoI0ehIkghJSqvP02m296e0nMPAgO
=O7db
-----END PGP SIGNATURE-----
--
support ramdiskless boot for relavant kvm drive interfaces in -virtual
https://bugs.launchpad.net/bugs/494565
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
