vSAN disk goes offline frequently and vSAN disk error is seen in vSAN Skyline Health
Article ID: 395246
Updated On:
Products
Issue/Introduction
Symptoms:
-
The following error event is seen on the vSphere Client "
Lost connectivity to storage device naa.################. Path vmhba#:C#:T#:L# is down."
Where "naa.################" is a vSAN storage device. -
The vSAN disk group appears to be unhealthy:
Environment
VMware vSAN 7.x
Cause
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vmkernel logs on the ESXi host with the affected disk display IO errors for the disk and no connect SCSI code:
YYYY-MM-DDTHH:MM:SS.SSSZ cpu24:2101735)WARNING: ScsiDeviceIQ: 12146: READ CAPACITY on device "naa.################" from Plugin "HPP" failed. I/0 errorYYYY-MM-DDTHH:MM:SS.SSSZ cpu47:2097290)ScsiDeviceIO: 4167: Cmd(0x45c940f52dc8) 0x25, CmdSN 0x47c2d8 from world 0 to dev "naa.################" failed H:0x1 D:0x0 P:0x0 -
Due to this NO_CONNECT (H:0x1) SCSI code, the error for lost connectivity is seen.
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The NO_CONNECT error is seen if the disk has either been removed or if it has any issues.
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The SCSI sense code "0xb 0x44" from vmkernel log for the faulty device indicates an "Internal Target Failure":
YYYY-MM-DDTHH:MM:SS.SSSZ cpu41:2098370)ScsiDeviceIO: 4115: Cmd(0x45c940e989c8) 0x28, CmdSN 0x969 from world 0 to dev "naa.################" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0xb 0x44 0x0 - These indicates a hardware issue with the physical disk.
Resolution
To resolve this issue:
- Contact the hardware vendor to investigate the Internal Target Failure for the faulty disk.
- Replace the faulty disk from the disk group - Requirements when replacing disks in a vSAN cluster.
Additional Information
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