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Esx Reservation Error Timeout

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Tweet Storage Performance and Timeout Issues Posted on April 10, 2012 by Rick Blythe Here's our second log deep-dive from Nathan Small scsi reservation conflict vmware (Twitter handle: vSphereStorage). If you missed the first one, here it is. reservation state on device is unknown. History of the issue General storage performance issue while experiencing timeouts and SCSI reservation issues (Timeout/conflict) on what is scsi reservation ESX 4.1 (VMware View) and ESX 5.0 environments. Need to determine why these events are being seen and how we can improve performance.The first step when troubleshooting this type scsi reservation conflict linux of issue is to take a frame of reference that is visible across all hosts. Here is the issue observed on one of the ESX 4.1 host:ESXi 4.1:Mar 28 17:12:58 vmkernel: 34:11:37:08.013 cpu13:4262)NMP: nmp_PathDetermineFailure: SCSI cmd RESERVE failed on path vmhba1:C0:T2:L1, reservation state on device naa.60060480000190100554533032324644 is unknown.Mar 28 17:12:58 vmkernel: 34:11:37:08.013 cpu13:4262)ScsiDeviceIO: 1688: Command 0x16 to

Vmware Scsi Device Reset

device "naa.60060480000190100554533032324644" failed H:0x5 D:0x0 P:0x0 Possible sense data: 0x0 0x0 0x0.Mar 28 17:12:58 vmkernel: 34:11:37:08.013 cpu13:4262)WARNING: NMP: nmp_DeviceRequestFastDeviceProbe: NMP device "naa.60060480000190100554533032324644" state in doubt; requested fast path state update…Mar 28 17:12:58 vmkernel: 34:11:37:08.013 cpu14:4134)WARNING: FS3: 7120: Reservation error: TimeoutWhen reviewing the logs from the ESX 5.0 host, we see the issue observed at the same time:ESXi 5.0:2012-03-28T17:12:56.481Z cpu11:4107)NMP: nmp_PathDetermineFailure:2084: SCSI cmd RESERVE failed on path vmhba2:C0:T3:L23, reservation state on device naa.60060480000190100554533033364445 is unknown.2012-03-28T17:12:56.481Z cpu11:4107)NMP: nmp_ThrottleLogForDevice:2318: Cmd 0x16 (0x4124003d4740, 0) to dev "naa.60060480000190100554533033364445" on path "vmhba2:C0:T3:L23" Failed: H:0x8 D:0x0 P:0x0 Possible sense data: 0x0 0x0 0x0. Act:EVAL2012-03-28T17:12:56.481Z cpu11:4107)WARNING: NMP: nmp_DeviceRequestFastDeviceProbe:237:NMP device "naa.60060480000190100554533033364445" state in doubt; requested fast path state update…2012-03-28T17:12:56.481Z cpu11:4107)ScsiDeviceIO: 2322: Cmd(0x4124003d4740) 0x16, CmdSN 0x23102 from world 0 to dev "naa.60060480000190100554533033364445" failed H:0x8 D:0x0 P:0x0 Possible sense data: 0x0 0x0 0x0.2012-03-28T17:12:56.481Z cpu1:4132)WARNING: FS3: 1835: Reservation error: TimeoutThese logs show that the ESX storage stack is not aware of what the SCSI reservation state of the device is. This will happen when a SCSI RESERVE command is sent, doesn't not complete

 

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