[patch] Re: Loading mfsroot read-write on FreeBSD 6.0-RELEASE
Dinesh Nair
dinesh at alphaque.com
Sun Nov 13 05:25:03 GMT 2005
On 11/12/05 21:02 Dinesh Nair said the following:
> how does one specify a read/write mount of mfsroot in 6.0 in the
> bootloader ?
apparently, the behaviour of vfs_mountroot_try() has changed in 6.0.
previously, if the root filesystem was mounted from a memory disk, as would
be the case with an mfsroot.gz, it would be mounted R/W while other fs
types would be mounted R/O before /etc/rc scripts upgraded the mount to
R/W. however, in 6.0, all root filesystems are mounted R/O.
the following patch mounts all root filesystems R/W. it's a quick and dirty
fix however, for a cleaner fix would be to duplicate 5.x behaviour of only
mounting memory disks R/W and other disks R/O. the kernel needs to be
rebuilt for this patch to take effect.
is there enough interest in having memory root file systems mounted R/W at
boot ? if there is, i could put in a little bit more effort into
duplicating 5.x behaviour on this and submitting it as a PR to 6.0.
--- CUT HERE ---
--- sys/kern/vfs_mount.c.orig Sat Nov 12 23:22:07 2005
+++ sys/kern/vfs_mount.c Sat Nov 12 23:59:50 2005
@@ -1297,7 +1297,7 @@
strcpy(path, ROOTNAME);
error = kernel_vmount(
- MNT_RDONLY | MNT_ROOTFS,
+ MNT_ROOTFS,
"fstype", vfsname,
"fspath", "/",
"from", path,
--- CUT HERE ---
--
Regards, /\_/\ "All dogs go to heaven."
dinesh at alphaque.com (0 0) http://www.alphaque.com/
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