LU-17667 tests: Handle more than 1 IP returned by 'ip' cmd

An interface could have more than one IP address. This may
be not normal and is a corner case. This patch handles case
where 'ip' command returns more than single IP and also adds
new info/debug messages.

Corner Case:
ip -o -4 a s enp0s8 | awk '{print $4}' | sed 's/\/.*//'
192.168.50.188
192.168.1.12

Before patch:
sanity-lnet.sh line 1174: ((: 188 12: syntax error in expression
(error token is "12")

After patch:
...
IP for enp0s8 found [2]
Interface:IP are
enp0s8:192.168.50.188
enp0s8:192.168.1.12
Using GW_NID:192.168.50.189@tcp
...

Test-Parameters: trivial testlist=sanity-lnet
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: I783a6b67508a4497d18db94b5d2bdab616b4ade5
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/54547
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lustre/tests/sanity-lnet.sh b/lustre/tests/sanity-lnet.sh
index 9369723..614cca9 100755 (executable)
--- a/lustre/tests/sanity-lnet.sh
+++ b/lustre/tests/sanity-lnet.sh
@@ -1164,8 +1164,14 @@ append_net_tunables() {
                awk '/^\s+tunables:$/,/^\s+CPT:/' >> $TMP/sanity-lnet-$testnum-expected.yaml
 }
 
-IF0_IP=$(ip -o -4 a s ${INTERFACES[0]} |
-        awk '{print $4}' | sed 's/\/.*//')
+ARR_IF0_IP=($(ip -o -4 a s ${INTERFACES[0]} |
+           awk '{print $4}' | sed 's/\/.*//'))
+echo "Total IP for ${INTERFACES[0]} found [${#ARR_IF0_IP[@]}]"
+echo "Interface:IP are"
+for i in ${ARR_IF0_IP[@]}; do
+       echo "${INTERFACES[0]}:$i"
+done
+IF0_IP=${ARR_IF0_IP[0]}
 IF0_NET=$(awk -F. '{print $1"."$2"."$3}'<<<"${IF0_IP}")
 IF0_HOSTNUM=$(awk -F. '{print $4}'<<<"${IF0_IP}")
 if (((IF0_HOSTNUM + 5) > 254)); then
@@ -1174,6 +1180,8 @@ else
        GW_HOSTNUM=$((IF0_HOSTNUM + 1))
 fi
 GW_NID="${IF0_NET}.${GW_HOSTNUM}@${NETTYPE}"
+echo "Using GW_NID:$GW_NID"
+
 test_100() {
        [[ ${NETTYPE} == tcp* ]] || skip "Need tcp NETTYPE"