Allow -c arg override in badblocks run

disk-burnin.sh

@@ -29,7 +29,7 @@ readonly USAGE=\
     $(basename "$0") -- disk burn-in program
 
 SYNOPSIS
-    $(basename "$0") [-h] [-e] [-f] [-o <directory>] [-x] <disk>
+    $(basename "$0") [-h] [-c <num_blocks>] [-e] [-f] [-o <directory>] [-x] <disk>
 
 DESCRIPTION
     A script to simplify the process of burning-in disks. Only intended for use
@@ -46,6 +46,7 @@ DESCRIPTION
 OPTIONS
     -h                Show help text
     -e                Show extended help text
+    -c <num_blocks>   Override concurrent number of blocks tested
     -f                Force script to run in destructive mode
                       ALL DATA ON THE DISK WILL BE LOST!
     -o <directory>    Write log files to <directory> (default: $(pwd))
@@ -218,13 +219,19 @@ VERSIONS
         Changed disk type detection so that we assume all drives are mechanical drives
         unless they explicitly return 'Solid State Drive' for Rotational Rate.
         Removed datestamp from every line of log output, only emitting it in log headers.
-        Minor reformatting."
+        Minor reformatting.
+
+    KY, 30 May 2022
+        Added -c option to control the badblocks -c option."
 
 # badblocks default -e option is 1, stop testing if a single error occurs
 BB_E_ARG=1
 
+# badblocks default -c option is 64, and this allows overriding
+BB_C_ARG=64
+
 # parse options
-while getopts ':hefo:x' option; do
+while getopts ':hefo:c:x' option; do
   case "${option}" in
     h)  echo "${USAGE}"
         exit
@@ -237,7 +244,9 @@ while getopts ':hefo:x' option; do
         ;;
     o)  LOG_DIR="${OPTARG}"
         ;;
-    x)  BB_E_ARG=0  
+    c)  BB_C_ARG="${OPTARG}"
+        ;;
+    x)  BB_E_ARG=0
         ;;
     :)  printf 'Missing argument for -%s\n' "${OPTARG}" >&2
         echo "${USAGE}" >&2
@@ -262,6 +271,7 @@ fi
 ################################################################################
 
 readonly BB_E_ARG
+readonly BB_C_ARG
 
 # Drive to burn-in
 DRIVE="$1"
@@ -559,7 +569,7 @@ run_smart_test() {
 run_badblocks_test() {
   log_header "Running badblocks test"
   if [ "${DISK_TYPE}" != "SSD" ]; then
-    dry_run_wrapper "badblocks -b 8192 -wsv -e ${BB_E_ARG} -o \"${BB_File}\" \"${DRIVE}\""
+    dry_run_wrapper "badblocks -b 8192 -wsv -c ${BB_C_ARG} -e ${BB_E_ARG} -o \"${BB_File}\" \"${DRIVE}\""
   else
     log_info "SKIPPED: badblocks for ${DISK_TYPE} device"
   fi