[systemd-devel] Problems with rootfs over nfs

[Mariusz Bialonczyk]

Hello
Last time I gave a try to systemd as my init replacement. I am using it on
debian sid system (systemd is from experimental), My rootfs is on NFS share
(I have "ip=dhcp root=/dev/nfs and nfsroot=..." appended as kernel parameters).
First problem in my configuration is remounting my root filesystem.
It cannot remount it in read-write because systemd is remounting it with the
following command:
mount -o remount /
and this gives the following error during bootup:
mount.nfs: remote share not in 'host:dir' format

so I have to patch /lib/systemd/system/remount-rootfs.service it like this:

--- remount-rootfs.service.original	2011-04-28 21:20:45.000000000 +0200
+++ remount-rootfs.service	2011-05-14 18:09:13.254955918 +0200
@@ -15,5 +15,5 @@
 [Service]
 Type=oneshot
 RemainAfterExit=yes
-ExecStart=/bin/mount / -o remount
+ExecStart=/bin/mount /dev/nfs / -o remount
 StandardOutput=syslog

After reboot my rootfs was remounted correctly in rw mode. I know this is a
specific and ugly workaround, but my point is to report this as an issue.
Just by the way: my system is starting up in about 25 seconds with sysvinit,
while with systemd it took about 20 seconds. Nice :)

Second issue is the powering down the machine. My sysvinit has no problems
with this. I took a photo of last onscreen messages:
http://skyboo.net/systemd/sysvinit.png
After this the computer is properly powered down.

While using systemd i've got the following:
http://skyboo.net/systemd/systemd.png
It seems that the kernel is trying to pull some data from NFS server and it
is not responding (don't know why - maybe the NIC was deconfigured too early,
or rootfs unmounted)... and it hung like this forever - so the only way to
power off is holding the power button :(

If you need further info, please let me know, I'll try to provide
as much as I can.

regards,
-- 
Mariusz Białończyk
jabber/e-mail: manio at skyboo.net
http://manio.skyboo.net