wrapper script to overcome redirection + sudo behavior

Signed-off-by: Travis Glenn Hansen <travisghansen@yahoo.com>

Dockerfile

@@ -47,6 +47,7 @@ LABEL org.opencontainers.image.url https://github.com/democratic-csi/democratic-
 LABEL org.opencontainers.image.licenses MIT
 
 ENV DEBIAN_FRONTEND=noninteractive
+ENV DEMOCRATIC_CSI_IS_CONTAINER=true
 
 ARG TARGETPLATFORM
 ARG BUILDPLATFORM
@@ -96,6 +97,9 @@ RUN chmod +x /usr/local/sbin/iscsiadm
 ADD docker/multipath /usr/local/sbin
 RUN chmod +x /usr/local/sbin/multipath
 
+ADD docker/simple-file-writer /usr/local/bin
+RUN chmod +x /usr/local/bin/simple-file-writer
+
 ## USE_HOST_MOUNT_TOOLS=1
 ADD docker/mount /usr/local/bin/mount
 RUN chmod +x /usr/local/bin/mount

docker/simple-file-writer

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+echo ${1} > ${2}

src/driver/freenas/ssh.js

@@ -2021,11 +2021,22 @@ class FreeNASSshDriver extends ControllerZfsBaseDriver {
            *
            * midclt resync_lun_size_for_zvol tank/foo/bar
            * works on SCALE only ^
+           *
            */
-          command = execClient.buildCommand("sh", [
-            "-c",
-            `echo 1 > /sys/kernel/scst_tgt/devices/${kName}/resync_size`,
-          ]);
+
+          if (process.env.DEMOCRATIC_CSI_IS_CONTAINER == "true") {
+            // TODO: syntax fails with sudo
+            command = execClient.buildCommand("sh", [
+              "-c",
+              `echo 1 > /sys/kernel/scst_tgt/devices/${kName}/resync_size`,
+            ]);
+          } else {
+            // use the built-in wrapper script that works with sudo
+            command = execClient.buildCommand("simple-file-writer", [
+              "1",
+              `/sys/kernel/scst_tgt/devices/${kName}/resync_size`,
+            ]);
+          }
           reload = true;
         } else {
           switch (apiVersion) {