Differences

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--- en:services:storage_services:backup:tsm:admin:fc_stuff [2019/04/03 15:20]
bnachtw
+++ en:services:storage_services:backup:tsm:admin:fc_stuff [2020/09/10 15:32] (current)
bnachtw [multipathd commands]
@@ Line 13: / Line 13: @@
 /sys/class/scsi_host/host17/device/fc_host/host17/port_name 0x2100f4e9d45573c8
 /sys/class/scsi_host/host18/device/fc_host/host18/port_name 0x2100f4e9d45573c9
+</code>
+=== using systool ===
+according to [[https://www.thegeekdiary.com/how-to-identify-the-hba-cardsports-and-wwn-in-rheloel/| The Geek Diary]]
+  * To check the available HBA ports :
+<code>
+# systool -c fc_host
+Class = "fc_host"
+  Class Device = "host2"
+    Device = "host2"
+  Class Device = "host3"
+    Device = "host3"
+</code>
+  * To find the WWNs for the HBA ports :
+<code>
+# systool -c fc_host -v | grep port_name
+    port_name           = "0x500143802426baf4"
+    port_name           = "0x500143802426baf6"
+</code>
+  * To check the state of the HBA ports (online/offline) :
+<code>
+# systool -c fc_host -v | grep port_state
+    port_state          = "Online"
+    port_state          = "Online"
 </code>
 ===== multipathing =====
@@ Line 23: / Line 49: @@
 FIXME
+===== Rescaning the SCSI bus =====
+ordinarily you just use the ''rescan-scsi.sh'' command.
+thus, this only reads the configuration again, but does not reinitialize the HBA.
+this can be done by:
+<code>
+# echo "1" > /sys/class/fc_host/host<X>/issue_lip
+</code>
+replacing '<X'>  with the number of the HBA.