Date: Fri, 16 Feb 96 15:51:22 JST From: akiyama@kme.mei.co.jp (Shunsuke Akiyama) To: terry@lambert.org Cc: hackers@freebsd.org Subject: Re: Optical disk driver update and enhancement patch. Message-ID: <9602160651.AA13666@kmegate.kme.mei.co.jp> In-Reply-To: <199602141750.KAA25465@phaeton.artisoft.com> (message from Terry Lambert on Wed, 14 Feb 1996 10:50:54 -0700 (MST))
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> Terry Lambert <terry@lambert.org> writes:
>
>> Known problem:
>> UFS build on 1024 byte/sector media can not mount as root
>> filesystem.
>
> What are the failure symptoms? Is it the BIOS-based boot blocks,
> or does the kernel not recognize the device?
It's mostly boot blocks. The PC-BIOS can handle 512 byte/sector size
only. Kernel on 1024 byte/sector media never load into memeory, if
boot blocks uses the BIOS.
And another point, that's my patch. I reviewed my changes, then I
found mistake. I made fix patch like bellow.
I guess this patch may be fix mounting 1024 byte/sector media on root
filesystem, with booting kernel on DOS FS using fbsdboot.exe.
--
Shunsuke Akiyama
Kyushu Matsushita Electric Co., Ltd. Fukuoka, Japan.
akiyama@kme.mei.co.jp
----- Patch Here -----
===================================================================
RCS file: sys/ufs/ffs/RCS/ffs_vfsops.c,v
retrieving revision 1.35.0.2
diff -u -r1.35.0.2 sys/ufs/ffs/ffs_vfsops.c
--- 1.35.0.2 1996/02/12 07:45:48
+++ sys/ufs/ffs/ffs_vfsops.c 1996/02/15 14:02:35
@@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)ffs_vfsops.c 8.8 (Berkeley) 4/18/94
- * $Id: ffs_vfsops.c,v 1.35.0.2 1996/02/12 07:45:48 shun Exp $
+ * $Id: ffs_vfsops.c,v 1.35.0.3 1996/02/15 14:02:35 shun Exp $
*/
#include "opt_quota.h"
@@ -327,12 +327,11 @@
(void)VFS_STATFS(mp, &mp->mnt_stat, p);
if (fs == NULL) {
- /* root mounts, set default sector size */
- mp->mnt_stat.f_spare[0] = 512;
- } else {
- /* non-root mounts, set sector size */
- mp->mnt_stat.f_spare[0] = fs->fs_fsize / fs->fs_nspf;
+ ump = VFSTOUFS(mp);
+ fs = ump->um_fs;
}
+ /* set sector size */
+ mp->mnt_stat.f_spare[0] = fs->fs_fsize / fs->fs_nspf;
goto success;
----- Patch End -----
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