#!/bin/bash
#############################################################
# Name:        Supportconfig Plugin for Xen
# Description: Gathers important troubleshooting information
#              about Xen and its tools
#############################################################

# TODO:
# - Anything needed for UEFI?
#

RCFILE="/usr/lib/supportconfig/resources/supportconfig.rc"
OF="output-xen.txt"

GRUB2_CONF_FILES="/etc/default/grub"
XEN_CONF_FILES="/etc/xen/xl.conf /etc/sysconfig/xencommons /etc/sysconfig/xendomains"
XEN_SERVICES="xencommons xendomains xen-watchdog"
PERSISTENT_VM_CONF_FILES=""
ACTIVE_VM_CONF_FILES=""
XEN_LOG_FILES=""

if [ -s $RCFILE ]; then
    if ! source $RCFILE; then
        log_write $OF "ERROR: Initializing resource file: $RCFILE"
        exit 1
    fi
fi

# if no xen package we are done
rpm_verify $OF xen || exit 111

# if not a xen host (dom0) we are done
log_write $OF "#==[ Checking if booted Xen ]=================================#"
if [ ! -d /proc/xen ] || [ ! -e /proc/xen/capabilities ] || [ `cat /proc/xen/capabilities` != "control_d" ]; then
    log_write $OF "No"
    log_write $OF "Skipped"
    exit 0
else
    log_write $OF "Yes"
fi

# basic system information:
log_cmd $OF "uname -r"
for service in $XEN_SERVICES; do
    log_cmd $OF "systemctl status $service"
    log_cmd $OF "systemctl is-enabled $service"
done
log_cmd $OF "lscpu"
log_cmd $OF "xl info --numa"
log_cmd $OF "xl list"
log_cmd $OF "xl pci-assignable-list"
log_cmd $OF "xenstore-ls"
log_cmd $OF "ps -ef | grep xen"
# dump grub2-related conf files
conf_files $OF "$GRUB2_CONF_FILES"
# dump Xen-related conf files
conf_files $OF "$XEN_CONF_FILES"

# detailed system info:
log_cmd $OF "xl list --long"
log_cmd $OF "xl dmesg"
# network-related info often useful for debugging
if [ systemctl is-enabled NetworkManager.service 2>&1 > /dev/null ]; then
    log_write $OF "NOTE: NetworkManager should not be enabled on a Xen host"
fi
log_cmd $OF "route -n"
log_cmd $OF "arp -v"
log_cmd $OF "ip link show type bridge"
log_cmd $OF "bridge link show"
# list contents of common config and image directories
log_cmd $OF "ls -alR /etc/xen/vm/"
log_cmd $OF "ls -alR /etc/xen/auto/"
log_cmd $OF "ls -alR /var/lib/xen/images/"
# dump VM-related conf files
test -d /etc/xen/vm && PERSISTENT_VM_CONF_FILES=$(find -L /etc/xen/vm/ -type f | sort)
conf_files $OF "$PERSISTENT_VM_CONF_FILES"
test -d /var/lib/xen && ACTIVE_VM_CONF_FILES=$(find -L /var/lib/xen/userdata* -type f | sort)
conf_files $OF "$ACTIVE_VM_CONF_FILES"
# dump log files
test -d /var/log/xen && XEN_LOG_FILES="$(find -L /var/log/xen/ -type f | grep 'log$' | sort)"
log_files $OF 0 "$XEN_LOG_FILES"