Preview mode that survives a reboot, and a fallback log that survives one too

Plugin/unraid/api/fallback_control.php

@@ -84,9 +84,11 @@ $scripts = rtrim(SCRIPTS_DIR, '/');
 $cmds = [
     'stop'       => 'bash ' . escapeshellarg("$scripts/Fallback/fallback.sh") . ' --stop 2>&1',
     'stop_test'  => 'bash ' . escapeshellarg("$scripts/Fallback/fallback_test.sh") . ' --stop 2>&1',
-    // setsid so it outlives this request; own log so the page can show what the preview said.
+    // setsid so it outlives this request. No redirect: fallback.sh writes its own persistent
+    // log when stdout is not a terminal, so an ad-hoc preview and the array-start daemon leave
+    // their record in the same file rather than one going to tmpfs and vanishing on reboot.
     'start_dry'  => 'setsid bash ' . escapeshellarg("$scripts/Fallback/fallback.sh")
-                  . ' --dry-run --log > /tmp/varaverk/fallback_dryrun.log 2>&1 < /dev/null & echo started',
+                  . ' --dry-run --log > /dev/null 2>&1 < /dev/null & echo started',
     'clear_lock' => 'rm -f /tmp/unraid_locks/fallback.lock /tmp/unraid_locks/fallback_test.lock && echo cleared',
 ];
 
@@ -119,8 +121,8 @@ if ($remoteDir === '') $remoteDir = '/boot/config/plugins/varaverk';
 $remoteCmds = [
     'stop'       => "bash '$remoteDir/Fallback/fallback.sh' --stop 2>&1",
     'stop_test'  => "bash '$remoteDir/Fallback/fallback_test.sh' --stop 2>&1",
-    'start_dry'  => "mkdir -p /tmp/varaverk; setsid bash '$remoteDir/Fallback/fallback.sh'"
-                  . " --dry-run --log > /tmp/varaverk/fallback_dryrun.log 2>&1 < /dev/null & echo started",
+    'start_dry'  => "setsid bash '$remoteDir/Fallback/fallback.sh'"
+                  . " --dry-run --log > /dev/null 2>&1 < /dev/null & echo started",
     'clear_lock' => 'rm -f /tmp/unraid_locks/fallback.lock /tmp/unraid_locks/fallback_test.lock && echo cleared',
 ];