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--- projects:homelab:inspur_hotswap_cages [2024/10/16 16:44] – [PHY Mapping] note about phy0-phy11 Andrew Yong
+++ projects:homelab:inspur_hotswap_cages [2026/10/26 02:13] (current) – add spindown commands Andrew Yong
@@ Line 34: / Line 34: @@
 phy0-phy11 are mapped to the mini-SAS HD connectors.
 ==== LED Control ====
@@ Line 48: / Line 49: @@
   * ''failure'': Red status LED
   * All other patterns cause LED color(s) to get stuck until valid patterns are used to set and clear stuck LED color(s)
+==== Spindown on Shutdown ====
+<code - /etc/udev/rules.d/60-sas-exp-spindown.rules>
+# Stop (spin down) disks behind a SAS expander at poweroff
+ACTION=="add|change", SUBSYSTEM=="scsi_disk", DEVPATH=="*/expander-*/*", ATTR{manage_shutdown}="1"
+</code>
 ===== Useful Utilities =====
   * sasutils
-    * ''sas_discover -vv''
+    * ''sas_discover -vv'' - SAS devices, topology (tree) view
-    * ''sas_devices [-v...]''
+    * ''sas_devices [-v...]'' - SAS devices, list view
   * ''ledctl''
     * OpenZFS' ''zed'' [[https://github.com/openzfs/zfs/blob/master/cmd/zed/zed.d/statechange-led.sh|automatically indicates vdev failures on supported enclosures' drive failure LED(s)]], if failed drives are replaced into other enclosures/bays, the failure LED may get stuck; ''ledctl'' can be used to clear the failure indicator
+  * udisks2
+    * ''%%find /dev/disk/by-path -name "*sas-exp0x56c92bf*lun-0" -exec sudo udisksctl power-off -b {} ';'%%'' - spindown all disks in all expander backplanes

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