[arch-releng] [archiso] keep name resolver settings

[Christian Hesse]

Ionut Biru <ibiru at archlinux.org> on Thu, 2012/04/19 23:56:
> On 04/19/2012 10:50 PM, Christian Hesse wrote:
> > Hello everybody,
> > 
> > I am not shure if this is the correct place to report or if there is any
> > better one... If so - please let me know.
> > 
> > Ok, the initrd hooks from archiso support PXE booting. In this case the
> > initrd is responsible for setting up the network. All these setting are
> > persistent, so are still valid after changing to the real system. With one
> > exception: name resolver settings (namely file /etc/resolv.conf) are lost,
> > which ends up in a system with network connectivity that can not resolve a
> > single host.
> > 
> > Even worse: When launching a dhcp client you may get a new address and
> > end up with something completely useless as nbd connection is lost.
> > 
> > I would like to write the final /etc/resolv.conf from within initrd. For
> > me this completely solves the problem. Patch is attached.
> 
> Please send the patch inline since our mailing list filters regular
> attachments.
> 

Sorry, did not know that.

Here we go:

--- archiso/archiso/hooks/archiso	2012-04-19 18:39:24.381454201 +0200
+++ archiso/archiso/hooks/archiso	2012-04-19 18:40:58.095839569 +0200
@@ -193,6 +193,13 @@ archiso_mount_handler() {
     if [[ "${copytoram}" == "y" ]]; then
         umount /run/archiso/bootmnt
     fi
+
+    if [[ -s "/etc/resolv.conf" ]]; then
+       echo "# These settings have been generated within initrd and moved" \
+        > /etc/resolv.conf
+       echo "# to main system by hook archiso." >> /etc/resolv.conf
+	cat "/etc/resolv.conf" >> "${newroot}/etc/resolv.conf"
+    fi
 }
 
 # vim:ft=sh:ts=4:sw=4:et:

-- 
Best regards,
Chris
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