XenServer 7.1 commands cheat sheet

Welcome to my own XenServer cheat sheet where I will make notes about important commands used in basic and more advanced XenServer configuration.

Display information about disk

Display disk information
#ll /dev/disk/by-id

Display only information about physical disks
#fdisk -l |grep -n ‘Disk /dev/’ |grep -v ‘/dev/mapper’

Display information about disk controller

Detailed information about disk controller
# modinfo megaraid_sas

Driver version
# modinfo megaraid_sas |grep -i version

Display information about Fibre Channel HBA and target devices

• Basic information about FC HBA
  # lspci |grep -i Fibre

• Detailed information about FC HBA, Port Status, Driver

All vendors
# systool -c fc_host -v

Emulex
# hbacmd listhbas

• List FC target devices connected to the FC HBA
  # systool -c fc_remote_ports -v –d

• Display driver information

Emluex
# more /var/log/dmesg |grep -i emulex
or

QLogic
# lscpi |grep QLogic
or
# systool -m qla2xxx –v

• Display WWN details (instance name)

Emulex
# hbacmd listhbas |grep -i ‘port WWN’

QLogic
# scli –t

• Display HBA and port details (use WWN port address from previous command)

Emulex
# hbacmd hbaattrib WWNP
and
# hbacmd portattrib WWNP

• Display available LUNs

Emulex
# hbacmd TargetMapping WWPN

Qlogic
# scli –l Instance-Name

Display information about SCSI devices

• Detailed information about SCSI devices
  # systool -c scsi_host –v

• List SCSI disks connected to the system
  # systool -c scsi_disk –v

XenServer pool operations

• Display pool master
  # xe host-param-get param-name=name-label uuid=`xe pool-list |grep master | awk ‘{print $4}’`
• Display failed pool members
  # xe host-list params=uuid,name-label,host-metrics-live
  Any servers listed as host-metrics-live = false have failed
• Emergency pool master transfer
  On a new pool master execute the following command:
  # xe pool-emergency-transition-to-master
  Once the command has completed, recover connections to the other member servers using the following command:
  # xe pool-recover-slaves
  Verify that pool management has been restored by issuing a test command at the CLI
  # xe host-list