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--- linux:discover_devices [2021/12/01 12:41]
manu
+++ linux:discover_devices [2022/03/20 22:05] (current)
manu
@@ Line 100: / Line 100: @@
 [root@fedora22 multipath]# rescan-scsi-bus.sh -r
 </cli>
+===== systool =====
+<cli prompt='#'>
+# systool
+Supported sysfs buses:
+        scsi
+        usb
+...
+Supported sysfs classes:
+        sas_host
+        scsi_device
+        scsi_disk
+        scsi_generic
+        scsi_host
+        usbmon
+...
+Supported sysfs devices:
+        cpu
+        system
+...
+Supported sysfs modules:
+        tpm_tis
+        usbnet
+        vt
+        xfs
+...
+# systool -c fc_host -v | more
+Class = "fc_host"
+  Class Device = "host5"
+  Class Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:15:00.0/host5/fc_host/host5"
+    dev_loss_tmo        = "30"
+    fabric_name         = "0x1000000533b6dd57"
+    issue_lip           = <store method only>
+    max_npiv_vports     = "254"
+    node_name           = "0x20000024ff3434e4"
+    npiv_vports_inuse   = "0"
+    port_id             = "0x010000"
+    port_name           = "0x21000024ff3434e4"
+    port_state          = "Online"
+    port_type           = "NPort (fabric via point-to-point)"
+    speed               = "8 Gbit"
+    supported_classes   = "Class 3"
+    supported_speeds    = "1 Gbit, 2 Gbit, 4 Gbit, 8 Gbit"
+    symbolic_name       = "QLE2562 FW:v5.08.00 DVR:v8.04.00.08.06.4-k"
+    system_hostname     = ""
+    tgtid_bind_type     = "wwpn (World Wide Port Name)"
+    uevent              =
+    vport_create        = <store method only>
+    vport_delete        = <store method only>
+</cli>
+If you only want to get host5 info, then here you go
+<cli prompt='#'>
+# systool -c fc_host -v -d host5
+Well, module detail info
+# systool -m qla2xxx -v
+Module = "qla2xxx"
+  Attributes:
+    initstate           = "live"
+    refcnt              = "288"
+    srcversion          = "C5EBE96340369EB294E6D44"
+    version             = "8.04.00.08.06.4-k"
+  Parameters:
+    ql2xallocfwdump     = "1"
+    ql2xasynclogin      = "1"
+...
+</cli>
+To get HBA info
+<cli prompt='#'>
+# systool -c fc_host -A port_name
+Class = "fc_host"
+  Class Device = "host5"
+    port_name           = "0x21000024ff3434e4"
+    Device = "host5"
+  Class Device = "host6"
+    port_name           = "0x21000024ff3434e5"
+    Device = "host6"
+</cli>
+Check scsi disk path
+<cli prompt='#'>
+# systool -c scsi_disk  -d 0:5:0  -p
+Class = "scsi_disk"
+  Class Device = "0:5:0"
+  Class Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:15:00.0/host5/rport-5:0-7/target5:0:5/5:0:5:0/scsi_disk/5:0:5:0"
+    Device = "5:0:5:0"
+    Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:15:00.0/host5/rport-5:0-7/target5:0:5/5:0:5:0"
+  Class Device = "0:5:0"
+  Class Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:15:00.1/host6/rport-6:0-8/target6:0:5/6:0:5:0/scsi_disk/6:0:5:0"
+    Device = "6:0:5:0"
+    Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:15:00.1/host6/rport-6:0-8/target6:0:5/6:0:5:0"
+</cli>
+Get usb info
+<cli prompt='#'>
+# systool -b usb -d usb1  -v
+Bus = "usb"
+  Device = "usb1"
+  Device path = "/sys/devices/pci0000:00/0000:00:1a.7/usb1"
+    authorized          = "1"
+...
+</cli>
+Check local disk
+<cli prompt='#'>
+#  systool -c scsi_disk -v 1:0:0
+Class = "scsi_disk"
+  Class Device = "1:0:0"
+  Class Device path = "/sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/host0/target0:1:0/0:1:0:0/scsi_disk/0:1:0:0"
+    FUA                 = "0"
+    allow_restart       = "0"
+    app_tag_own         = "0"
+    cache_type          = "write through"
+    manage_start_stop   = "0"
+    protection_mode     = "none"
+    protection_type     = "0"
+    provisioning_mode   = "full"
+    thin_provisioning   = "0"
+    uevent              =
+    Device = "0:1:0:0"
+    Device path = "/sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/host0/target0:1:0/0:1:0:0"
+      delete              = <store method only>
+      device_blocked      = "0"
+      dh_state            = "detached"
+      evt_media_change    = "0"
+      iocounterbits       = "32"
+      iodone_cnt          = "0x28eab"
+      ioerr_cnt           = "0x35"
+      iorequest_cnt       = "0x28eab"
+      modalias            = "scsi:t-0x00"
+      model               = "Logical Volume  "
+      queue_depth         = "128"
+      queue_ramp_up_period= "120000"
+      queue_type          = "simple"
+      rescan              = <store method only>
+      rev                 = "3000"
+      sas_address         = "0x0396c469eb687835"
+      sas_device_handle   = "0x00b5"
+      scsi_level          = "7"
+      state               = "running"
+      timeout             = "30"
+      type                = "0"
+      uevent              = "DEVTYPE=scsi_device
+DRIVER=sd
+MODALIAS=scsi:t-0x00"
+      vendor              = "LSI     "
+FC remote port info
+#  systool -c fc_remote_ports -v -d 0-8
+Class = "fc_remote_ports"
+  Class Device = "0-8"
+  Class Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:15:00.0/host5/rport-5:0-8/fc_remote_ports/rport-5:0-8"
+    dev_loss_tmo        = "30"
+    fast_io_fail_tmo    = "off"
+    node_name           = "0x20000024ff3434d4"
+    port_id             = "0x010200"
+    port_name           = "0x21000024ff3434d4"
+    port_state          = "Online"
+    roles               = "FCP Initiator"
+    scsi_target_id      = "-1"
+    supported_classes   = "Class 3"
+    uevent              =
+    Device = "rport-5:0-8"
+    Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:15:00.0/host5/rport-5:0-8"
+      uevent              =
+  Class Device = "0-8"
+  Class Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:15:00.1/host6/rport-6:0-8/fc_remote_ports/rport-6:0-8"
+    dev_loss_tmo        = "30"
+    fast_io_fail_tmo    = "off"
+    node_name           = "0x20060080e52d2652"
+    port_id             = "0x011200"
+    port_name           = "0x20460080e52d2652"
+    port_state          = "Online"
+    roles               = "FCP Target"
+    scsi_target_id      = "5"
+    supported_classes   = "Class 3"
+    uevent              =
+    Device = "rport-6:0-8"
+    Device path = "/sys/devices/pci0000:00/0000:00:03.0/0000:15:00.1/host6/rport-6:0-8"
+      uevent              =
+</cli>
+===== Rescan Iscsi =====
+<cli prompt='>'>
+iscsiadm -m session                     # Obtain the list of all the current sessions
+iscsiadm -m session --sid=N --rescan    # Rescan a specific session N is the specific session ID.
+iscsiadm -m session --rescan            # Rescan all the sessions
+/usr/bin/rescan-scsi-bus.sh             # Rescan using the SCSI rescan script
+</cli>

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