Date: Sat, 22 May 1999 01:55:20 -0400 (EDT) From: "John W. DeBoskey" <jwd@unx.sas.com> To: freebsd-current@freebsd.org Subject: Re: 4.0-current install problem(s)(error mounting root) Message-ID: <199905220555.BAA86299@bb01f39.unx.sas.com> In-Reply-To: From "John W. DeBoskey" at "May 21, 1999 2:51:45 pm"
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Hi,
The following patch and John Birrell's patch posted earlier appear
to fix the problem when booting a 4.0-current install floppy(kern.flp).
The DEVT_FASCIST macro is incorrect and does the wrong thing
when the device id 'x' passed into makedev is 255.
Thanks,
John
Index: kern_conf.c
===================================================================
RCS file: /mirror/ncvs/src/sys/kern/kern_conf.c,v
retrieving revision 1.40
diff -u -r1.40 kern_conf.c
--- kern_conf.c 1999/05/18 13:14:43 1.40
+++ kern_conf.c 1999/05/22 05:32:59
@@ -200,6 +200,8 @@
makedev(int x, int y)
{
#ifdef DEVT_FASCIST
+ if (x == 255)
+ return ((dev_t) ((x << 8) | y));
return ((dev_t) (((255 - x) << 8) | y));
#else
return ((dev_t) ((x << 8) | y));
John Birrell's patch:
Index: vfs_conf.c
===================================================================
RCS file: /mirror/ncvs/src/sys/kern/vfs_conf.c,v
retrieving revision 1.26
diff -u -r1.26 vfs_conf.c
--- vfs_conf.c 1998/09/14 19:56:40 1.26
+++ vfs_conf.c 1999/05/22 03:15:41
@@ -52,6 +52,7 @@
* on SMP reentrancy
*/
#include "opt_bootp.h"
+#include "opt_mfs.h"
#include <sys/param.h> /* dev_t (types.h)*/
#include <sys/kernel.h>
@@ -136,6 +137,9 @@
/*
* Attempt the mount
*/
+#ifdef MFS_ROOT
+ err = VFS_MOUNT(mp, NULL, NULL, NULL, p);
+#else
err = ENXIO;
orootdev = rootdev;
if (rootdevs[0] == NODEV)
@@ -154,6 +158,7 @@
if (err != ENXIO)
break;
}
+#endif
if (err) {
/*
* XXX should ask the user for the name in some cases.
> Hi,
>
> I build a 4.0-current SNAP each evenning, and thought I'd give a new
> install a try since the dev_t issue appears to have been resolved..
>
> Unfortunately, booting from either a CD or boot floppies, after
> probing the ppi0(or maybe plip0) device, the system spontaniously
> reboots (and I can't easily read the last few message lines).
>
> I then went into the /snap/release area and starting re-running
> the release.8 target while removing devices from the GENERIC
> config file used for the boot floppies.
>
> I finally got it down to the point where I get the following:
>
> error 6: panic: cannot mount root (2)
> syncing disks... done
> Automatic reboot in 15 seconds...
>
> etc, etc, etc
>
>
>
> So, I'll continue to see if I can narrow down the problem, but
> it looks like we have a problem mounting an MFSROOT root partition
> which the boot/install system requires.
>
> Comments & critiques are welcome!
>
>
> Thanks!
> - -John
>
>
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