I installed on ESXi 5.0 offline bundle 5.1, and after this installed offline bundle 5.1.0а. Now, I have ~ # vmware -v
VMware ESXi 5.1.0 build-838463.
And in my log watching interesting situation /var/log/vmkernel.log
2012-11-28T10:05:42.290Z cpu7:5039)WARNING: ScsiDeviceIO: 1211: Device naa.600605b0049021e017579dc7047fff41 performance has deteriorated. I/O latency increased from average value of 19209 microseconds to 577155 microseconds.
2012-11-28T10:05:44.296Z cpu11:4107)WARNING: ScsiDeviceIO: 1211: Device naa.600605b0049021e017579dc7047fff41 performance has deteriorated. I/O latency increased from average value of 19264 microseconds to 580562 microseconds.
2012-11-28T10:05:51.541Z cpu3:37757)WARNING: ScsiDeviceIO: 1211: Device naa.600605b0049021e017579dc7047fff41 performance has deteriorated. I/O latency increased from average value of 19406 microseconds to 602629 microseconds.
2012-11-28T10:06:39.775Z cpu9:6338)WARNING: ScsiDeviceIO: 1211: Device naa.600605b0049021e017579dc7047fff41 performance has deteriorated. I/O latency increased from average value of 20438 microseconds to 618588 microseconds.
2012-11-28T10:06:50.950Z cpu0:6338)WARNING: ScsiDeviceIO: 1211: Device naa.600605b0049021e017579dc7047fff41 performance has deteriorated. I/O latency increased from average value of 20666 microseconds to 743760 microseconds.
2012-11-28T10:07:31.248Z cpu9:6339)ScsiDeviceIO: 1191: Device naa.600605b0049021e017579dc7047fff41 performance has improved. I/O latency reduced from 743760 microseconds to 145638 microseconds.
2012-11-28T10:07:31.930Z cpu9:37983)VSCSI: 2370: handle 8198(vscsi0:0):Reset request on FSS handle 5188905 (67 outstanding commands)
2012-11-28T10:07:31.930Z cpu0:4202)VSCSI: 2648: handle 8198(vscsi0:0):Reset [Retries: 0/0]
2012-11-28T10:07:31.930Z cpu0:4202)megasas: ABORT sn 1436974 cmd=0x8a retries=0 tmo=0
2012-11-28T10:07:31.930Z cpu0:4202)<5>0 :: megasas: RESET -1436974 cmd=8a retries=0
2012-11-28T10:07:31.930Z cpu0:4202)megaraid_sas: HBA reset handler invoked without an internal reset condition.
2012-11-28T10:07:31.994Z cpu1:4097)WARNING: LinScsi: SCSILinuxQueueCommand:1193:queuecommand failed with status = 0x1055 Host Busy vmhba1:2:0:0 (driver name: LSI Logic SAS based MegaRAID driver) - Message repeated 1 time
2012-11-28T10:07:31.994Z cpu1:4097)ScsiDeviceIO: 2303: Cmd(0x412400735100) 0x2a, CmdSN 0x800201a0 from world 6336 to dev "naa.600605b0049021e017579dc7047fff41" failed H:0x0 D:0x8 P:0x0 Possible sense data: 0x0 0x0 0x0.
2012-11-28T10:07:32.017Z cpu1:6335)ScsiDeviceIO: 2303: Cmd(0x41240077cd40) 0x2a, CmdSN 0x5542 from world 4173 to dev "naa.600605b0049021e017579dc7047fff41" failed H:0x0 D:0x8 P:0x0 Possible sense data: 0x0 0x0 0x0.
2012-11-28T10:07:32.941Z cpu0:4202)<7>megaraid_sas: megasas_wait_for_outstanding: line 2156: AFTER HBA reset handler invoked without an internal reset condition: took 1 seconds. Max is 180.
2012-11-28T10:07:32.941Z cpu0:4202)megaraid_sas: no more pending commands remain after reset handling.
2012-11-28T10:07:32.941Z cpu0:4202)<5>megasas: reset successful
2012-11-28T10:07:32.941Z cpu0:4202)megasas: ABORT sn 1436980 cmd=0x2a retries=0 tmo=0
2012-11-28T10:07:32.941Z cpu0:4202)<5>0 :: megasas: RESET -1436980 cmd=2a retries=0
2012-11-28T10:07:32.942Z cpu0:4202)megaraid_sas: HBA reset handler invoked without an internal reset condition.
2012-11-28T10:07:32.942Z cpu0:4202)<7>megaraid_sas: megasas_wait_for_outstanding: line 2156: AFTER HBA reset handler invoked without an internal reset condition: took 0 seconds. Max is 180.
2012-11-28T10:07:32.942Z cpu0:4202)megaraid_sas: no more pending commands remain after reset handling.
2012-11-28T10:07:32.942Z cpu0:4202)<5>megasas: reset successful
2012-11-28T10:07:32.942Z cpu0:4202)megasas: ABORT sn 1437298 cmd=0x8a retries=0 tmo=0
2012-11-28T10:07:32.942Z cpu0:4202)<5>0 :: megasas: RESET -1437298 cmd=8a retries=0
2012-11-28T10:07:32.942Z cpu0:4202)megaraid_sas: HBA reset handler invoked without an internal reset condition.
2012-11-28T10:07:32.942Z cpu0:4202)<7>megaraid_sas: megasas_wait_for_outstanding: line 2156: AFTER HBA reset handler invoked without an internal reset condition: took 0 seconds. Max is 180.
2012-11-28T10:07:32.942Z cpu0:4202)megaraid_sas: no more pending commands remain after reset handling.
2012-11-28T10:07:32.942Z cpu0:4202)<5>megasas: reset successful
Now periodically latensi disk subsystem rolls over to the upper grades, respectively guest VMs very slow. I suspect that the problem is in the new drivers of raid controller, tell where to dig?