On Wed, Jan 11, 2012 at 16:04, Jan Engelhardt <jeng...@medozas.de> wrote:
> Therefore you can detect which programs where started inside the rootfs > vfsmount. That information can then influence killing decisions as > needed. > > Now, Kay Sievers claims (on IRC) pivot_root is "10 years ago stuff" and > points to util-linux's switchroot function for how things are supposedly > to be done today. But, as we look at > http://git.kernel.org/?p=utils/util-linux/util-linux.git;a=blob;f=sys-utils/switch_root.c;hb=HEAD#l150 > what can really be seen there is that the new root (/dev/sda3 in my > previous commands example) is just mounted atop the rootfs-type > vfsmount, thereby concealing it. > (That is not a replacement for what pivot_root does, really.) As far as I understand, the kernels own initial namespace, the initramfs where the cpio image is extracted to at bootup or the root= device is mounted to by the kernel, can not be replaced by pivot_root(), then same way it can not be umounted. For that reason, pivot_root during bootup is still 10 years old material, from the time we used initrd, which can be pivot_root()ed. I don't think any of the stuff above does matter here, it just can not be used. Kay _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
