[PATCH 1/6] kdump: Modify status() routine to check for firmware-assisted dump

This patch enables kdump script to check if firmware-assisted dump is enabled or not by reading value from '/sys/kernel/fadump_enabled'. Modify status() routine to check if firmware assisted dump is enabled or not by reading value from '/sys/kernel/fadump_enabled' file. If enabled and value from '/sys/kernel/fadump_registered' file is set to '1' then return status=0 else return status=1. 0 <= Firmware assisted is enabled and running 1 <= Firmware assisted is enabled but not running Signed-off-by: Mahesh Salgaonkar <mahesh(a)linux.vnet.ibm.com&gt; --- kdumpctl | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/kdumpctl b/kdumpctl index 46ae633..1255089 100755 --- a/kdumpctl +++ b/kdumpctl @@ -9,6 +9,8 @@ MKDUMPRD="/sbin/mkdumprd -f" SAVE_PATH=/var/crash SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa" DUMP_TARGET="" +FADUMP_ENABLED_SYS_NODE="/sys/kernel/fadump_enabled" +FADUMP_REGISTER_SYS_NODE="/sys/kernel/fadump_registered" . /lib/kdump/kdump-lib.sh @@ -358,8 +360,38 @@ function propagate_ssh_key() } +function is_fadump_capable() +{ + # Check if firmware-assisted dump is enabled + # if yes, check fadump status Otherwise fallback to kdump check + if [ -f $FADUMP_ENABLED_SYS_NODE ] && \ + [ -f $FADUMP_REGISTER_SYS_NODE ] + then + rc=`cat $FADUMP_ENABLED_SYS_NODE` + [ $rc -eq 1 ] && return 0 + fi + return 1 +} + +function is_fadump_registered() +{ + # Check if firmware-assisted has been registered. + rc=`cat $FADUMP_REGISTER_SYS_NODE` + [ $rc -eq 1 ] && return 0 + return 1 +} + function status() { + # Check if firmware-assisted dump is enabled + # if yes, check fadump status Otherwise fallback to kdump check + if is_fadump_capable; then + if is_fadump_registered; then + return 0 + fi + return 1 + fi + if [ ! -e /sys/kernel/kexec_crash_loaded ] then return 2