1.5 Multipathing

Vérifier l'état des cartes fibre

 #systool -c fc_host -A port_state
   Class = "fc_host"


   Class Device = "host0"
     port_state          = "Offline"


     Device = "host0"



   Class Device = "host1"
     port_state          = "Online"


     Device = "host1"

Vérifier l'état des chemins SAN

 # multipath -ll
 36005076304ffc62c0000000000008402 dm-14 IBM,2107900
 [size=30G][features=1 queue_if_no_path][hwhandler=0]
 \_ round-robin 0 [prio=1][active]
  \_ 1:0:0:3  sds  65:32  [active][ready]
 36005076304ffc4890000000000009002 dm-6 IBM,2107900
 [size=30G][features=1 queue_if_no_path][hwhandler=0]
 \_ round-robin 0 [prio=1][active]
  \_ 1:0:1:4  sdab 65:176 [active][ready]
 36005076304ffc4890000000000009102 dm-15 IBM,2107900
 [size=130G][features=1 queue_if_no_path][hwhandler=0]
 \_ round-robin 0 [prio=1][active]
 \_ 1:0:1:1  sdaa 65:160 [active][ready]
 \_ 0:0:0:1  sdb  8:16   [failed][faulty]

ou

 # multipathd -k"show topo"

Le premier chiffre de la chaine SCSI des luns correspond au numéro/nom de la carte fibre.

Afficher les WWN (carte emulex)

 # hbacmd listhbas

Activer une carte fibre (carte emulex)

 # hbacmd setportenabled ${wwn} 1 1>/dev/null
 # hbacmd enablebootcode ${wwn} E 1>/dev/null
 # hbacmd setbootparams ${wwn} x86 EnableBootFromSAN 1 1>/dev/null

Reseter une carte fibre (carte emulex)

 # hbacmd reset ${wwn}

Tester une carte fibre (carte emulex)

 # hbacmd posttest ${wwn}
 # hbacmd loopback ${wwn} 0 5 1 1a2b3c4d
 # hbacmd loopback ${wwn} 1 5 1 1a2b3c4d
 # hbacmd echotest ${wwn} ${wwpn} 5 1 1a2b3c4d