"Alan Altmark" wrote:
> On Sunday, 05/19/2002 at 03:02 AST, Dave Myers <[EMAIL PROTECTED]>
> wrote:
> > This is confusing....can you expand on your reply...
> > If I still need ECKD for Z/VM,
> > then how does this new feature benefit
> > the Linux environment...since most of us
> > will be running Linux under z/VM??
>
> It means that your Linux guests can access all of that SCSI-resident data,
> but the data on those devices is meaningless to z/VM itself.
>
> Maybe someday VM will itself be able to use SCSI instead of ECKD, but that
> day has not yet arrived. And as there is not yet any way to boot from
> SCSI (from zSeries), the Linux kernel must also be booted from ECKD. Once
> booted, Linux can then mount the SCSI drives.
Actually, all that would be needed is a first-stage boot loader
that knows how to load the second stage boot loader off a SCSI drive.
Perhaps it might want to use some parameters passed in whatever
method seems appropriate.
The boot loader itself could, in theory, be stored on a tiny
VM minidisk and shared among all Linux guests.
(in a way, the VM minidisk would be equivalent to a BIOS ROM
on some other platforms...)
--
Willem Konynenberg <[EMAIL PROTECTED]>
