Re: klibc

Nix
2006-06-09T08:04:01Z

On 7 Jun 2006, H. Peter Anvin noted:
> Followup to: <bda6d13a0606062351i5c94414fpa03ee2ce3dd180ae@mail.gmail.com>
> By author: "Joshua Hudson" <joshudson@gmail.com>
> In newsgroup: linux.dev.kernel
>>
>> Did anybody ever fix the can't pivot_root() the rootfs filesystem;
>> hense can't use on a loopback system backed by NTFS?
>
> You shouldn't pivot_root the rootfs filesystem.

What happens if you do? I mean, it doesn't make even conceptual sense,
really. The rootfs is always there: that's its entire purpose.

> Use the run-init
> utility or something similar instead (which does a mount with
> MS_MOVE.)

busybox has a switch_root tool which (conceptually) rm -rf's everything
on the root filesystem and then does such a mount. (After all whatever
is on that filesystem is inaccessible after the overmount, so keeping
it around is just a waste of memory.)

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