diff --git a/xCAT-test/autotest/testcase/kdump/linux_diskless_kdump b/xCAT-test/autotest/testcase/kdump/linux_diskless_kdump
index 6c44e3f27..f3f872594 100644
--- a/xCAT-test/autotest/testcase/kdump/linux_diskless_kdump
+++ b/xCAT-test/autotest/testcase/kdump/linux_diskless_kdump
@@ -1,17 +1,10 @@
 start:linux_diskless_kdump
 os:Linux
-cmd:fdisk -l
-cmd:df -T
 cmd:chdef -t node -o $$CN servicenode= monserver=$$MN nfsserver=$$MN tftpserver=$$MN  xcatmaster=$$MN
 check:rc==0
 
 cmd:makedns -n
 check:rc==0
-cmd:makeconservercf $$CN
-check:rc==0
-cmd:cat /etc/conserver.cf | grep $$CN
-check:output=~$$CN
-cmd:sleep 20
 cmd:if [[ "__GETNODEATTR($$CN,arch)__" = "ppc64" ]] && [[ "__GETNODEATTR($$CN,mgt)__" != "ipmi" ]]; then getmacs -D $$CN; fi
 check:rc==0
 cmd:makedhcp -n
@@ -25,16 +18,22 @@ check:rc==0
 
 cmd:rootimgdir=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep rootimgdir|awk -F'=' '{print $2}'`; if [ -d $rootimgdir ]; then mv $rootimgdir $rootimgdir.regbak -f;fi
 check:rc==0
+
+cmd:pkglistfile=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep pkglist|awk -F'=' '{print $2}'`;cp $pkglistfile $pkglistfile.bak
 cmd:pkglistfile=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep pkglist|awk -F'=' '{print $2}'`; if grep SUSE /etc/*release;then echo -e "kdump\nkexec-tools\nmakedumpfile\n" >> $pkglistfile; elif grep "Red Hat" /etc/*release;then echo -e "kexec-tools\ncrash\n" >> $pkglistfile;fi
 check:rc==0
 
+cmd:exlistfile=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep exlist|awk -F'=' '{print $2}'`;cp $exlistfile $exlistfile.bak
 cmd:exlistfile=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep exlist|awk -F'=' '{print $2}'`; sed -i '/boot/d' $exlistfile
 check:rc==0
 
+cmd:postinstallfile=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep postinstall|awk -F'=' '{print $2}'`;cp $postinstallfile $postinstallfile.bak
 cmd:postinstallfile=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep postinstall|awk -F'=' '{print $2}'`; if grep SUSE /etc/*release;then sed -i "/\/tmp/ s/10/200/g" $postinstallfile; elif grep "Red Hat" /etc/*release;then sed -i /devpts/a"tmpfs         /var/tmp    tmpfs   defaults,size=200m   0 2" $postinstallfile;fi
 check:rc==0
 
 cmd:if [ ! -d /kdumpdir ]; then mkdir -p /kdumpdir && chmod 777 /kdumpdir; fi
+cmd:if [ ! -f /etc/exports ] ;then touch /etc/exports;else cp /etc/exports /etc/exports.bak;fi
+cmd:echo -e "/kdumpdir *(rw,no_root_squash,sync,no_subtree_check)" >> /etc/exports && exportfs /etc/exports  fi;
 cmd:chdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute dump=nfs://$$MN/kdumpdir
 check:rc==0
 
@@ -54,7 +53,6 @@ cmd:rinstall $$CN osimage=__GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-ne
 check:rc==0
 check:output=~Provision node\(s\)\: $$CN
 
-cmd:if [[ -f /var/lib/dhcp/db/dhcpd.leases ]]; then cat /var/lib/dhcp/db/dhcpd.leases; elif [[ -f /var/lib/dhcpd/dhcpd.leases ]];then cat /var/lib/dhcpd/dhcpd.leases;elif [[ -f /var/lib/dhcp/dhcpd.leases ]];then cat /var/lib/dhcp/dhcpd.leases; fi
 cmd:sleep 900
 cmd:a=0;while ! `lsdef -l $$CN|grep status|grep booted >/dev/null`; do sleep 10;((a++));if [ $a -gt 60 ];then break;fi done
 
@@ -67,18 +65,17 @@ check:output=~booted
 cmd:xdsh $$CN date
 check:rc==0
 check:output=~\d\d:\d\d:\d\d
-cmd:xdsh $$CN mount
-check:rc==0
-check:output=~on / type tmpfs
-cmd:sleep 120
-cmd:ping $$CN -c 3
-check:rc==0
-check:output=~64 bytes from $$CN
 
 cmd:xdsh $$CN echo 1 > /proc/sys/kernel/sysrq
 cmd:xdsh $$CN echo c > /proc/sysrq-trigger
 cmd:sleep 600
 
-cmd:find /kdumpdir -name vmcore
-check:rc==0
+cmd:if [[ -s /hello ]]; then echo "this file is not empty";else echo "this file is empty"; fi
+check:output=~not empty
+
+cmd:pkglistfile=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep pkglist|awk -F'=' '{print $2}'`;mv -f $pkglistfile.bak $pkglistfile
+cmd:exlistfile=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep exlist|awk -F'=' '{print $2}'`;mv -f $exlistfile.bak $exlistfile
+cmd:postinstallfile=`lsdef -t osimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute|grep postinstall|awk -F'=' '{print $2}'`;mv -f $postinstallfile.bak $postinstallfile
+
+cmd:if [ -f /etc/exports.bak ] ;then mv -f /etc/exports.bak /etc/exports; fi
 end