bitrot: Make number of signer threads configurable

The number of signing process threads (glfs_brpobj)
is set to 4 by default. The recommendation is to set
it to number of cores available. This patch makes it
configurable as follows

gluster vol bitrot <volname> signer-threads <count>

fixes: bz#1797869
Change-Id: Ia883b3e5e34e0bc8d095243508d320c9c9c58adc
Signed-off-by: Kotresh HR <khiremat@redhat.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/tests/bitrot/br-signer-threads-config-1797869.t b/tests/bitrot/br-signer-threads-config-1797869.t
new file mode 100644
index 00000000000..657ef3eedaf
--- /dev/null
+++ b/tests/bitrot/br-signer-threads-config-1797869.t
@@ -0,0 +1,73 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+. $(dirname $0)/../cluster.rc
+
+function get_bitd_count_1 {
+        ps auxww | grep glusterfs | grep bitd.pid | grep -v grep | grep $H1 | wc -l
+}
+
+function get_bitd_count_2 {
+        ps auxww | grep glusterfs | grep bitd.pid | grep -v grep | grep $H2 | wc -l
+}
+
+function get_bitd_pid_1 {
+        ps auxww | grep glusterfs | grep bitd.pid | grep -v grep | grep $H1 | awk '{print $2}'
+}
+
+function get_bitd_pid_2 {
+        ps auxww | grep glusterfs | grep bitd.pid | grep -v grep | grep $H2 | awk '{print $2}'
+}
+
+function get_signer_th_count_1 {
+        ps -eL | grep $(get_bitd_pid_1) | grep glfs_brpobj | wc -l
+}
+
+function get_signer_th_count_2 {
+        ps -eL | grep $(get_bitd_pid_2) | grep glfs_brpobj | wc -l
+}
+
+cleanup;
+
+TEST launch_cluster 2
+
+TEST $CLI_1 peer probe $H2;
+EXPECT_WITHIN $PROBE_TIMEOUT 1 peer_count;
+
+TEST $CLI_1 volume create $V0 $H1:$B1
+TEST $CLI_1 volume create $V1 $H2:$B2
+EXPECT 'Created' volinfo_field_1 $V0 'Status';
+EXPECT 'Created' volinfo_field_1 $V1 'Status';
+
+TEST $CLI_1 volume start $V0
+TEST $CLI_1 volume start $V1
+EXPECT 'Started' volinfo_field_1 $V0 'Status';
+EXPECT 'Started' volinfo_field_1 $V1 'Status';
+
+#Enable bitrot
+TEST $CLI_1 volume bitrot $V0 enable
+TEST $CLI_1 volume bitrot $V1 enable
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "1" get_bitd_count_1
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "1" get_bitd_count_2
+
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "4" get_signer_th_count_1
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "4" get_signer_th_count_2
+
+old_bitd_pid_1=$(get_bitd_pid_1)
+old_bitd_pid_2=$(get_bitd_pid_2)
+TEST $CLI_1 volume bitrot $V0 signer-threads 1
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "1" get_signer_th_count_1
+EXPECT_NOT "$old_bitd_pid_1" get_bitd_pid_1;
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "4" get_signer_th_count_2
+EXPECT "$old_bitd_pid_2" get_bitd_pid_2;
+
+old_bitd_pid_1=$(get_bitd_pid_1)
+old_bitd_pid_2=$(get_bitd_pid_2)
+TEST $CLI_1 volume bitrot $V1 signer-threads 2
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "2" get_signer_th_count_2
+EXPECT_NOT "$old_bitd_pid_2" get_bitd_pid_2;
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "1" get_signer_th_count_1
+EXPECT "$old_bitd_pid_1" get_bitd_pid_1;
+
+cleanup;