7 Replies Latest reply on Jan 23, 2019 6:55 AM by ameyd

    Too many scsi reservation conflicts

    eseldura Lurker

      We've been seeing several reservation errors in our ESX

      environment. 

      Environment details:

      IBM Bladecenter with LS20 blades, QLogic QLA2xxx 2gb adapters

      Brocade fiber switch module

      Connected to IBM SAN Volume Controller (SVC) ver 4.2.1.5

      Running SVC Global Mirror to another site

      10 Nodes running ESX 3.5.0 update 2

      12 LUNs assigned to the cluster

       

      We don't see any fabric events on the switches.  SVC is not

      showing any errors as well.  The VMWAre ESX logs show numerous

      reservation errors on the LUNs and a few instances of VMs getting

      corrupted have occured.

      Any tuning parameter in the Qlogic HBAs that might help?

      Anyone out there with similar experience? 

       

      Thanks in advance!

       

      Sample log entries below:

       

      vmkernel:Feb  7 23:57:01 vmesx09 vmkernel: 0:03:26:09.775

      cpu3:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict

      vmkernel:Feb  7 23:57:06 vmesx09 vmkernel: 0:03:26:15.371

      cpu3:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict

      vmkernel:Feb  7 23:57:12 vmesx09 vmkernel: 0:03:26:21.153

      cpu3:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict

      vmkernel:Feb  7 23:57:18 vmesx09 vmkernel: 0:03:26:27.025

      cpu3:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict

      vmkernel.2:Feb  4 17:12:32 vmesx09 vmkernel: 1:23:07:39.378

      cpu2:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict

      vmkernel.2:Feb  4 17:12:38 vmesx09 vmkernel: 1:23:07:45.362

      cpu0:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict

      vmkernel.2:Feb  4 21:57:40 vmesx09 vmkernel: 2:03:52:48.163

      cpu0:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict

      vmkernel.2:Feb  5 01:27:37 vmesx09 vmkernel: 2:07:22:44.686

      cpu3:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict

      vmkernel.2:Feb  5 02:42:49 vmesx09 vmkernel: 2:08:37:57.252

      cpu2:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict

      vmkernel.2:Feb  5 02:57:35 vmesx09 vmkernel: 2:08:52:42.747

      cpu0:1039)WARNING: FS3: 4785: Reservation error: SCSI reservation

      conflict