Date: Mon, 03 Aug 1998 12:28:48 -0700 From: Mike Smith <mike@smith.net.au> To: Parag Patel <parag@cgt.com> Cc: Mike Smith <mike@smith.net.au>, freebsd-current@FreeBSD.ORG Subject: Re: NFS diskless booting (NFS root/swap) broken in -current? Message-ID: <199808031928.MAA00572@dingo.cdrom.com> In-Reply-To: Your message of "Mon, 03 Aug 1998 12:15:01 PDT." <199808031915.MAA20516@pinhead.parag.codegen.com>
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> > >Do you have 'options NFS_ROOT' in your kernel config? > > Yup, sure do. > > > >It might help to check the nfs_diskless_valid flag, and maybe dump the > >nfs_diskless structure just to see whether it's coming in correctly. > >The family is set by the bootstrap, so if it's not copied, it's not > >going to work. > > It's set to 0 (not valid). If it's set to zero, then locore.c has not copied the structure in from low memory. You might want to be looking at this fragment there: #ifdef NFS #ifndef BOOTP_NFSV3 /* * If we have a nfs_diskless structure copy it in */ movl BI_NFS_DISKLESS(%ebx),%esi cmpl $0,%esi je olddiskboot movl $R(_nfs_diskless),%edi movl $NFSDISKLESS_SIZE,%ecx cld rep movsb movl $R(_nfs_diskless_valid),%edi movl $1,(%edi) #endif #endif The nfs_diskless_valid flag is also fiddled in sys/nfs/bootp_subr.c; a quick look at the code leaves me a little seasick, but it's not clear at all that the nfs_diskless structure is properly populated in that case. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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