[arch-general] root on NFS and archlinux init scripts
Hi all, one of my systems is booting over PXE and running diskless. The root-filesystem is mounted over NFS by the kernel (with the help of the net-hook in initcpio). On shutdown there is a message '/: device is busy'. I found out, that this is originated by the netfs-script in /etc/rc.d. It tries to umount everything on the network. By removing this hook the warning went away. I think this is not as meant. Its not a critical error, only a warning, because of that i would hear you opinion on that. Additionally i discoverd following piece of code in rc.shutdown: stat_busy "Unmounting Filesystems" /bin/umount -a -r -t noramfs,notmpfs,nosysfs,noproc,nodevtmpfs -O no_netdev stat_done Here, only non-network filesystems are unmounted, right? So, an NFS-root is not unmounted on shutdown. That is not good, i think it should be looked for a solution. What do you think? Would be nice to hear from you. Greetings Thomas Bahn Here are my settings related with nfs: kernel-parameter: rootfstype=nfs root=/dev/nfs nfsroot=192.168.1.2:/srv/nfs/erich,v3,rsize=16384,wsize=16384 ip=dhcp /etc/fstab entry for the root: none / none /etc/rc.conf: NETWORK_PERSIST = "yes" /etc/mkinitcpio.conf: MODULES="nfs" HOOKS="base udev autodetect net filesystems"
Am 15.01.2011 21:13, schrieb Thomas Bahn:
This is known. If you have ideas, they are welcome. I only tested whether NFS root works in general, but I never figured out all the small problems.
You cannot unmount the root file system. It should remount it read-only at a later stage though. I don't think umounting is NFS even necessary, is there a problem when you don't?
What do you think? Would be nice to hear from you.
I'll accept any improvements in that area, but I never used NFS root with Arch for more than basic testing.
Am Samstag 15 Januar 2011, 21:32:23 schrieb Thomas Bächler:
I will try to fix it properly.
Ok, i did not know this. I assumed it will be unmounted because otherwise there will be an filesystem check on next start.
I don't think umounting is NFS even necessary, is there a problem when you don't?
Mh, i do not know. I thought some caches are written out when unmounting. But i will google for it ;)
How i can contribute to the initscripts? Should i mail an patch to this list?
On 15.01.2011 21:13, Thomas Bahn wrote:
/etc/rc.conf: NETWORK_PERSIST = "yes"
With the spaces that should cause an error. -- Florian Pritz -- {flo,bluewind}@server-speed.net
Am Samstag 15 Januar 2011, 21:42:24 schrieb Florian Pritz:
My fault ;) I did not do copy and paste. in the real rc.conf there are no spaces.
participants (3)
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Florian Pritz
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Thomas Bahn
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Thomas Bächler