On 29/05/2024 17.43, jro...@linux.ibm.com wrote:
From: Jared Rossi <jro...@linux.ibm.com>
This patch set primarily adds support for the specification of multiple boot
devices, allowing for the guest to automatically use an alternative device on
a failed boot without needing to be reconfigured. It additionally provides the
ability to define the loadparm attribute on a per-device bases, which allows
boot devices to use different loadparm values if needed.
In brief, an IPLB is generated for each designated boot device (up to a maximum
of 8) and stored in guest memory immediately before BIOS. If a device fails to
boot, the next IPLB is retrieved and we jump back to the start of BIOS.
Devices can be specified using the standard qemu device tag "bootindex" as with
other architectures. Lower number indices are tried first, with "bootindex=0"
indicating the first device to try.
Is this supposed with multiple scsi-hd devices, too? I tried to boot a guest
with two scsi disks (attached to a single virtio-scsi-ccw adapter) where
only the second disk had a bootable installation, but that failed...?
Thomas
