Understanding SCSI plug-in NMP errors/conditions in ESX/ESXi 4.x/5.x/6.0/7.0
Article ID: 330644
Updated On:
Products
VMware vSphere ESXi
Issue/Introduction
This article provides information about the SCSI plug-in status messages that you may observe when reviewing NMP errors in the vmkernel log.
Environment
VMware vSphere ESXi 6.x
VMware vSphere ESXi 7.x
VMware ESX 4.x
VMware vSphere ESXi 5.x
VMware ESX 4.x
VMware vSphere ESXi 5.x
Resolution
This table explains the SCSI plug-in status messages that are defined and updated by VMware:
For more information on SCSI host, device, ASC/ASCQ, and Plugin codes, see Interpreting SCSI sense codes
ESXi 5.x/6.X/7.X Plugin Error codes
| Code | Description | Status |
| P:0x0 | No error. | VMK_SCSI_PLUGIN_GOOD |
| P:0x1 |
An unspecified error occurred.
Note: The I/O cmd should be tried.
|
VMK_SCSI_PLUGIN_TRANSIENT |
| P:0x2 |
The device is a deactivated snapshot.
Note: The I/O cmd failed because the device is a deactivated snapshot and so the LUN is read-only.
|
VMK_SCSI_PLUGIN_SNAPSHOT |
| P:0x3 | SCSI-2 reservation was lost. | VMK_SCSI_PLUGIN_RESERVATION_LOST |
| P:0x4 |
The plug-in wants to requeue the I/O back.
Note: The I/O will be retried.
|
VMK_SCSI_PLUGIN_REQUEUE |
| P:0x5 | The test and set data in the ATS request returned false for equality. | VMK_SCSI_PLUGIN_ATS_MISCOMPARE |
| P:0x6 |
Allocating more thin provision space.
Device server is in the process of allocating more space in the backing pool for a thin provisioned LUN.
|
VMK_SCSI_PLUGIN_THINPROV_BUSY_GROWING |
| P:0x7 | Thin provisioning soft-limit exceeded. | VMK_SCSI_PLUGIN_THINPROV_ATQUOTA |
| P:0x8 | Backing pool for thin provisioned LUN is out of space. | VMK_SCSI_PLUGIN_THINPROV_NOSPACE |
ESX/ESXi 4.x Plugin Error codes
| Code | Description | Status |
| P:0x0 | No error. | VMK_SCSI_PLUGIN_GOOD |
| P:0x1 |
An unspecified error occurred.
Note: The I/O cmd should be tried.
|
VMK_SCSI_PLUGIN_TRANSIENT |
| P:0x2 |
The device is a deactivated snapshot.
Note: The I/O cmd failed because the device is a deactivated snapshot and so the LUN is read-only.
|
VMK_SCSI_PLUGIN_SNAPSHOT |
| P:0x3 | SCSI-2 reservation was lost. | VMK_SCSI_PLUGIN_RESERVATION_LOST |
| P:0x4 |
Allocating more thin provision space
Note: Device server is in the process of allocating more space in the backing pool for a thin provisioned LUN.
|
VMK_SCSI_PLUGIN_THINPROV_BUSY_GROWING |
| P:0x5 | Thin provisioning soft-limit exceeded. | VMK_SCSI_PLUGIN_THINPROV_ATQUOTA |
| P:0x6 |
Backing pool for thin provisioned LUN is out of space.
|
VMK_SCSI_PLUGIN_THINPROV_NOSPACE |
| P:0x7 | The test and set data in the ATS request returned false for equality. | VMK_SCSI_PLUGIN_ATS_MISCOMPARE |
| P:0x8 |
The plugin wants to requeue the I/O back.
Note: The I/O will be retried.
|
VMK_SCSI_PLUGIN_REQUEUE |
For more information on SCSI host, device, ASC/ASCQ, and Plugin codes, see Interpreting SCSI sense codes
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