xe sr-probe type=lvmohba device-config:device=/dev/disk/by-id/scsi-<your scsi id>

xe sr-introduce uuid=<device uuid> shared=true type=lvmohba name-label=<name>

xe pbd-create sr-uuid=<device uuid> device-config:device=/dev/disk/by-id/scsi-<scsi id> host-uuid=<host uuid>

xe pbd-plug uuid=<pbd uuid>

xe sr-scan uuid=<uuid>

systool -c fc_host -v

or specified for only one host:

systool -c fc_host host0 -v

lspci |grep -i "fibre channel"

/opt/QLogic_Corporation/QConvergeConsoleCLI/scli -t

shows the target system node and port name / lun count of disks

/opt/QLogic_Corporation/QConvergeConsoleCLI/scli -i

shows local hba info

/opt/QLogic_Corporation/QConvergeConsoleCLI/scli -l

shows attached LUNs

systool -c fc_host -v |grep port_name

or

systool -A port_name -c fc_host host0

systool -A port_name -c fc_host 

systool -c fc_host -v |grep node_name

systool -c fc_remote_ports -v -d

systool -c fc_transport -v

systool -m <controller> -v

* controller

• qla2xxx = QLogic
• lpfc = Emulex

-x also show bus, chan, id, lun and type

sg_map -n -x

systool -b scsi -v

systool -c scsi_disk -v

cat /proc/scsi/scsi

echo "- - -" > /sys/class/scsi_host/<host>/scan

The three dash (“- - -”) of the command act as wildcards meaning rescan everything. Remember that the three values usually stand for channel, SCSI target ID, and LUN.

multipathd -k"show paths"
multipathd -k"show multipaths topology"

Run the following command to show the current multipath topology:

multipath -l
multipath -ll

Run the following command to show the verbosity and print all paths and multipaths:

multipath -v 2

Run the following command to refresh information what is supplied by previous commands:

multipath -v 3

Script to scan all the LUNs and update the SCSI layer to reflect new devices:

/usr/bin/rescan-scsi-bus.sh

If you notice that “multipath –ll” shows you all the paths correctly and XenCenter shows you that some paths are not connected, you can refresh the information by:

/opt/xensource/sm/mpathcount.py

/usr/bin/rescan-scsi-bus.sh

• https://linoxide.com/storage/scandetect-luns-redhat-linux-outputs-remember/ How to identify the HBA cards/ports and WWN in Linux
• http://fibrevillage.com/storage/61-systool-a-useful-tool-for-san-as-well-for-sysfs-devices
• https://blog.osnexus.com/2012/03/20/understanding-fc-fabric-configuration-5-paragraphs/
  
  Authors:

  • Jochen Schnuerle