|
| From: | Paul Brook |
| Subject: | Re: [Qemu-devel] [PATCH - V3] Port codes from qemu-kvm to support booting from SCSI disk image |
| Date: | Wed, 18 Aug 2010 16:08:55 +0100 |
| User-agent: | KMail/1.13.5 (Linux/2.6.35-trunk-amd64; KDE/4.4.5; x86_64; ; ) |
> The qemu-kvm could boot from SCSI disk image by utilizing seabios, this > patch ported codes > from qemu-kvm to let upstream qemu to support booting from SCSI disk image. No. This has nothing to do with SCSI. What it does is add a really cheap and nasty block storage device that aliases one of the other block devices in the system. This is bad. The OS has no way of knowing which devices are aliased, and we really don't want yet another braindead guest visible interface (c.f. recent performance issues where - kernel/fw_cfg were being abused) This has been discussed several times before. The proper solution is to teach the bios how to boot off SCSI devices. IIRC support for virtio devices already exists, implementing support for the SCSI controller shouldn't be that much harder. Paul
| [Prev in Thread] | Current Thread | [Next in Thread] |