LPFC warning/error messages in the vmkernel logs

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

Emulex lpfc driver error messages appear in vmkernel log, located at var/log/.

 

• Message: WARNING: lpfc: lpfc_slave_alloc:3355: 0:(0):0704 At limitation of 2048 preallocated command buffers
  
  Entries in the boot log (boot.gz):
  boot:2014-08-05T06:07:40.480Z cpu4:32968)WARNING: lpfc: lpfc_slave_alloc:3355: 0:(0):0704 At limitation of 2048 preallocated command buffers
  boot:2014-08-05T06:07:40.480Z cpu8:32971)WARNING: lpfc: lpfc_slave_alloc:3355: 0:(0):0704 At limitation of 2048 preallocated command buffers
  boot:2014-08-05T06:07:40.480Z cpu5:32967)WARNING: lpfc: lpfc_slave_alloc:3355: 0:(0):0704 At limitation of 2048 preallocated command buffers
  
   
• Message: lpfc: lpfc_scsi_cmd_iocb_cmpl:2145: 1:(0):3271: FCP cmd x1a failed <2/134> sid x029000, did x03bb00, oxid xffff SCSI Reservation
  
  SCSI reservation conflicts in the boot log (boot.gz):
  boot:2014-08-05T06:07:53.306Z cpu12:32791)lpfc: lpfc_scsi_cmd_iocb_cmpl:2145: 1:(0):3271: FCP cmd x1a failed <2/134> sid x029000, did x03bb00, oxid xffff SCSI Reservation Conflict
  boot:2014-08-05T06:07:55.394Z cpu12:33265)lpfc: lpfc_scsi_cmd_iocb_cmpl:2145: 1:(0):3271: FCP cmd x1a failed <0/1> sid x029000, did x029480, oxid xffff SCSI Reservation Conflict
  boot:2014-08-05T06:07:55.473Z cpu12:33509)lpfc: lpfc_scsi_cmd_iocb_cmpl:2145: 1:(0):3271: FCP cmd x1a failed <0/1> sid x029000, did x029480, oxid xffff SCSI Reservation Conflict
  boot:2014-08-05T06:07:55.553Z cpu12:32791)lpfc: lpfc_scsi_cmd_iocb_cmpl:2145: 1:(0):3271: FCP cmd x1a failed <0/1> sid x029000, did x029480, oxid xffff SCSI Reservation Conflict

 

 

Environment

VMware ESXi 4.0.x Embedded
VMware ESXi 4.1.x Embedded
VMware vSphere ESXi 6.0
VMware vSphere ESXi 5.1
VMware ESXi 4.0.x Installable
VMware vSphere ESXi 5.5
VMware vSphere ESXi 5.0
VMware ESXi 4.1.x Installable
VMware ESXi 3.5.x Embedded
VMware ESXi 3.5.x Installable
VMware vSphere ESXi 6.5

Cause

• Message: WARNING: lpfc: lpfc_slave_alloc:3355: 0:(0):0704 At limitation of 2048 preallocated command buffers
  
  This is not an issue, it is the driver logging that it cannot allocate any more buffers. All the buffers are available for use. The driver does not release scsi buffers from slave_allocate and it does make a best effort not to grow the buffer list.
   
• Message: lpfc: lpfc_scsi_cmd_iocb_cmpl:2145: 1:(0):3271: FCP cmd x1a failed <2/134> sid x029000, did x03bb00, oxid xffff SCSI Reservation Conflict
  
  Possible firmware/driver conflict combination if no other storage errors are observed.

Resolution

These two messages are resolved in newer lpfc driver/firmware releases:

 

1. Message: WARNING: lpfc: lpfc_slave_alloc:3355: 0:(0):0704 At limitation of 2048 preallocated command buffers
   
   Resolution: Newer lpfc drivers prevent this driver spew.
   
   Note: The new lpfc driver is included in newer builds of ESXi.
    
2. Message: lpfc: lpfc_scsi_cmd_iocb_cmpl:2145: 1:(0):3271: FCP cmd x1a failed <2/134> sid x029000, did x03bb00, oxid xffff SCSI Reservation Conflict
   
   In vmkernel.log you see entries similar to:
   2013-05-18T07:16:17.931Z cpu3:1000776572)***lpfc_module_desc:1: Unsupported SLI Rev 2
   2013-05-18T07:16:17.939Z cpu3:1000776572)***lpfc_module_desc:0: Unsupported SLI Rev 2
   
   Resolution: Update the HBA firmware.