On Wed, Oct 16, 2013 at 06:18:12PM +0200, Warpme wrote: > Hi, > I want to switch init system from SysV to systemd-196. > Sys is PXE booted disk-less appliance with rootfs based on overlayfs. > > Currently I can PXEboot, successfully switch root from initrd to > overlayfs based root, systemd starts and executes many of it's > units. > Unfortunately user units are failing due / is read-only. > When I issue "mount -o remount,rw /" - root becomes rw - so it > looks like systemd for some reason isn't remounting root to rw. > Interesting is that exactly the same initrd->overlayfs script (see > below) works OK for SysV - so I think issue isn't in my pivot_root > procedure but rather systemd receives / in rw but leaves in ro (as > "mount -o remount,rw /" allows to write to /). > > Script switching initrd to overlayfs root looks following: > > /bin/mount -n -t tmpfs none /rw > /bin/mkdir -p /rw/rootfs > /bin/mount -n -t overlayfs -o > lowerdir=/rootfs-ro,upperdir=/rw/rootfs none /rootfs > cd /rootfs > /bin/mkdir -p initrd proc sys > /sbin/pivot_root . initrd > exec /usr/sbin/chroot . /usr/lib/systemd/systemd > > Where issue might be? What's in /etc/fstab?
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