Date: Sun, 17 Feb 2008 23:05:28 -0800 From: perryh@pluto.rain.com To: freebsd-questions@freebsd.org Subject: Mounting a read-only md FS as read-only Message-ID: <47b92e38.PPjllqvtMAVuJE1V%perryh@pluto.rain.com>
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I'm trying to mount an ext2fs image (in a file), following sec. 17.13.2 of the Handbook and the mdconfig(8) manpage. Since I don't want to change the image, just examine it, I specified -o readonly to mdconfig and the equivalent to mount. Is there some reason why this should not work? The backing file, and the mountpoint, do exist. # ls -ld [filename] -rw-r--r-- 1 perryh perryh 104857600 Mar 16 2007 [filename] # mdconfig -a -t vnode -f [filename] -o readonly md0 # ls -ld /dev/md0 /[mountpoint] crw-r----- 1 root operator 1, 15 Nov 24 21:17 /dev/md0 drwxr-xr-x 2 perryh perryh 512 Feb 17 21:57 /[mountpoint] # mount -r -o noexec -t ext2fs /dev/md0 /[mountpoint] mount_ext2fs: /dev/md0: Read-only file system # mount -o ro,noexec -t ext2fs /dev/md0 /[mountpoint] mount_ext2fs: /dev/md0: Read-only file system # /sbin/mount_ext2fs -o ro,noexec /dev/md0 /[mountpoint] mount_ext2fs: /dev/md0: Read-only file system # mdconfig -l -u 0 md0 vnode 100M /[mountpoint] # uname -a FreeBSD fbsd61 6.1-RELEASE FreeBSD 6.1-RELEASE #30: Mon Jan 1 23:01:34 PST 2007 perryh@fbsd61:/usr/src/sys/i386/compile/GENERIC i386
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