What is the meaning of lpfc driver messages in /var/log/messages?

Issue

• The /var/log/messages file contains the error messages from lpfc driver. What is the meaning of those error messgaes?

  Aug 23 04:06:49 xxxx kernel: lpfc 0000:0c:00.0: 0:0729 FCP cmd x28 failed <0/53> status: x1 result: x200 Data: x10c x9b8
  Aug 23 04:06:49 xxxx kernel: lpfc 0000:0c:00.0: 0:(0):0730 FCP command x28 failed: x0 SNS x0 x0 Data: x0 x6a x0 x0 x0
  Aug 23 04:06:49 xxxx kernel: lpfc 0000:0c:00.0: 0:(0):0734 FCP Read Check Error Data: x200 x6a x200 x28
  Aug 23 04:06:49 xxxx kernel: lpfc 0000:0c:00.0: 0:0710 Iodone <0/53> cmd ffff81042e5f5b00, error x70000 SNS x0 x0 Data: x0 x200
  Aug 23 04:06:49 xxxx kernel: device-mapper: multipath: Failing path 8:144.
  Aug 23 04:06:49 xxxx multipathd: dm-8: add map (uevent)
  Aug 23 04:06:49 xxxx multipathd: dm-8: devmap already registered
  Aug 23 04:06:49 xxxx multipathd: dm-16: add map (uevent)
  Aug 23 04:06:49 xxxx multipathd: dm-16: devmap already registered
  Aug 23 04:06:53 xxxx snmpd[7704]: Connection from UDP: [127.0.0.1]:19764
  Aug 23 04:06:53 xxxx snmpd[7704]: Received SNMP packet(s) from UDP: [127.0.0.1]:19764
  Aug 23 04:06:54 xxxx multipathd: sdc: readsector0 checker reports path is down
  Aug 23 04:06:54 xxxx multipathd: checker failed path 8:32 in map mpath1002
  Aug 23 04:06:54 xxxx kernel: lpfc 0000:0c:00.0: 0:0729 FCP cmd x28 failed <0/46> status: x1 result: x200 Data: x111 x9be
  Aug 23 04:06:54 xxxx kernel: lpfc 0000:0c:00.0: 0:(0):0730 FCP command x28 failed: x0 SNS x0 x0 Data: x0 xe6 x0 x0 x0
  Aug 23 04:06:54 xxxx kernel: lpfc 0000:0c:00.0: 0:(0):0734 FCP Read Check Error Data: x200 xe6 x200 x28
  Aug 23 04:06:54 xxxx kernel: lpfc 0000:0c:00.0: 0:0710 Iodone <0/46> cmd ffff81042e5f5b00, error x70000 SNS x0 x0 Data: x0 x200