Remus dom0 requirements

Modern Kernels

Remus requires a Xen capable dom0 with the following kernel modules:

• sch_plug
• sch_prio
• sch_ingress
• cls_basic
• cls_tcindex
• cls_u32
• act_mirred
• ifb

Upstream Linux 3.5+ includes these modules natively, which can usually be enabled by listing them in /etc/modules. Verify you have each module using 'modprobe' first.

For testing you can run Remus with '--no-net' if you don't have these modules, but would like to try it out anyways.

Older kernels

Config options for Linux 2.6.32 pvops dom0 kernel for Remus

This is example is based on Linux 2.6.32 pvops (jeremy's xen.git xen/stable-2.6.32.x branch).

These are the .config options required by Remus:

CONFIG_IFB=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_FILTER=m
CONFIG_NET_SCHED=y
CONFIG_NET_SCH_PRIO=m
CONFIG_NET_SCH_INGRESS=m
CONFIG_NET_SCH_PLUG=m
CONFIG_NET_CLS=y
CONFIG_NET_CLS_BASIC=m
CONFIG_NET_CLS_TCINDEX=m
CONFIG_NET_CLS_U32=m
CONFIG_NET_CLS_ACT=y
CONFIG_NET_ACT_MIRRED=m

Using Linux kernel v3.x < v3.5 as dom0 kernel for Remus Xen hosts

Upstream Linux v3.x kernel < v3.5 contains Xen pvops dom0 support, but it does not contain "sch_plug" driver which is required for Remus. It's possible to manually add that driver to your custom upstream Linux v3.x kernel build. The "sch_plug" driver is available for example from: http://pasik.reaktio.net/xen/remus/linux3x/ .