Messages in this thread |  | | Date | Sun, 14 Oct 2001 13:32:31 -0400 (EDT) | From | Alexander Viro <> | Subject | Re: mount --bind and -o [re: nosuid/noexec/nodev handling] |
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On Sun, 14 Oct 2001, Ville Herva wrote:
> $═mount --bind -o ro /mnt/ext2-2 /tmp/test
i.e. mount --bind /mnt/ext2-2 /tmp/test
> $═mount --bind -o remount,ro /tmp/test
i.e. mount -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)
Confused mount(8) - apparently uses /etc/mtab and doesn't manage to deduce the changes done by remounting (/etc/mtab is maintained by userland; /proc/mounts is handled by kernel and is supposed to be accurate).
> $ touch /mnt/ext2-2/a > touch: /mnt/ext2-2/a: Read-only file system
Sure, read-only is per-superblock right now. Change it on one instance and you've changed it on all of them.
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