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    SubjectRe: mount --bind and -o [re: nosuid/noexec/nodev handling]
    On Sun, 14 Oct 2001, Ville Herva wrote:
    > $ mount --bind -o nosuid,noexec,ro /bin /tmp/test
    > $ mount --bind -o nosuid,noexec,ro /bin /tmp/test
    > $ mount --bind -o remount,nosuid,noexec,ro /tmp/test

    Ignore the that, sorry.

    For simplicity's sake, I changed the dirs in the above example. In reality
    the situation was more like this:

    /mnt1 and /mnt2 are separate fs's.

    /mnt2/test1 is symlink to /mnt1/directory


    mount --bind -o ro /mnt2/test1 /mnt2/test2
    mount --bind -o remount,ro /mnt2/test2

    but it seems I'm longer able to duplicate that either. (The reason I was
    able to duplicate it in the first place was propably that the first hanging
    mount process kept /mnt2/test1 somehow busy and I retried with mount --bind
    -o ro /mnt2/test1 /mnt2/test3.)

    I'll drop you a note if I figure out how to reproduce it.

    BTW: This should be reproducible (for what it's worth):

    $ mount
    /dev/hde1 on /mnt/ext2-2 type reiserfs (rw,noatime,nodiratime)
    $ touch /mnt/ext2-2/a
    $ rm /mnt/ext2-2/a
    $ mount --bind -o ro /mnt/ext2-2 /tmp/test
    $ mount --bind -o remount,ro /tmp/test
    $ mount
    /dev/hde1 on /mnt/ext2-2 type reiserfs (rw,noatime,nodiratime)
    /mnt/ext2-2 on /tmp/test type none (ro,bind)
    $ touch /mnt/ext2-2/a
    touch: /mnt/ext2-2/a: Read-only file system
    $ umount /tmp/test
    $ mount
    /dev/hde1 on /mnt/ext2-2 type reiserfs (rw,noatime,nodiratime)
    $ touch /mnt/ext2-2/a
    touch: /mnt/ext2-2/a: Read-only file system
    $ mount -o remount,rw /mnt/ext2-2
    $ touch /mnt/ext2-2/a

    -- v --
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