Source: open-iscsi
Severity: normal
Tags: patch
When booting with iBFT, the network configuration is performed by
open-iscsi as part of initramfs.local-top instead of by klibc-ipconfig
as it would be during for example a PXE boot. This includes populating
/run/net-*.conf which is consumed among other things, by cloud-init.
Currently no attempt to determine PROTO is made, and PROTO=none is hard
coded into the file which cloud-init does not recognise and crashes out.
Recent versions of open-iscsi (such as that currently in unstable)
correctly export this information from "iscsistart -f" so I am attaching
a patch to export that information into /run/net-*.conf
The approach I took is simply to take the output from iscsistart (which
as best I can tell will be either 'dhcp' or 'static' and then pipe it
through 'tr' to lowercase it to match the output created by
klibc-ipconfig. I could not find a specific standard on the format of
/run/net-*.conf so that was the best I could go with. It works at least
for the 2 most likely situations of dhcp/static.
This requires a new-ish (last couple years) version of open-iscsi but
that is already in debian unstable [would only matter if someone
attempted to backport this functionality, probably irrelevant for this
bug]
If you want to test this, it is possible to simulate an iBFT environment
using qemu & iPXE with a "kernel command line" or manually entering a
script similar to the following:
ifconf -c dhcp && set username x && set password x && sanhook --drive
0x80 iscsi:100.64.1.254::3261:0:iqn.2017-04.net.lathiat:target1 ||
prompt ; autoboot
Cheers,
Trent
-- System Information:
Debian Release: buster/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.11.0-8-generic (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
diff -Nru open-iscsi-2.0.874/debian/extra/initramfs.local-top
open-iscsi-2.0.874/debian/extra/initramfs.local-top
--- open-iscsi-2.0.874/debian/extra/initramfs.local-top 2017-05-10
00:23:32.000000000 +0800
+++ open-iscsi-2.0.874/debian/extra/initramfs.local-top 2017-06-23
16:32:53.000000000 +0800
@@ -159,6 +159,7 @@
iface.primary_dns) IPV4DNS0="${v}" ;;
iface.secondary_dns) IPV4DNS1="${v}" ;;
iface.net_ifacename) DEVICE="${v}" ;;
+ iface.bootproto) PROTO="$(echo ${v} | tr
'[:upper:]' '[:lower:]')" ;;
esac
done
fi
