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Knowledge Base

Verbose logging and information for the software iSCSI initiator in VMware ESX 4.x and ESXi 4.x / 5.x (1013283)

Last Updated: 2/17/2017Categories: How toTotal Views: 21479Language:
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Purpose

This article describes how to enable and disable verbose logging of the VMware software initiator.

Resolution

Note: The commands in this article are executed from the ESX/ESXi command line interface. For more information on how to connect to the host via SSH or the local console, see Using Tech Support Mode in ESXi 4.1 and ESXi 5.x (1017910) or Tech Support Mode for Emergency Support (1003677).

Checking the current debugging level

To identify the current debugging level, run this command:

vmkiscsid -x "select * from internal;"

The output displays all configured control parameters in the daemon. For ESX 4.0, this includes these parameters:

discovery.ltime - The last logical time used in performing discovery. Do not modify this value.

option.LogLevel - The current daemon log level.

option.LogSync - Synchronous Log Enable. Do not modify this value.

Enabling verbose debugging

If the option.LogLevel parameter is not listed when you check the current bug level, it must be enabled and set.

To enable and set the option.LogLevel parameter, run this command:

vmkiscsid -x "insert into internal (key,value) VALUES('option.LogLevel','999');"

The output appears similar to:

Sending SQL Request select * from internal;
Record 0:
`key`='discovery.ltime'

`value`='21'
Request completed with status: 0

In the sample output, option.LogLevel and option.LogSync are not set.

If the option.LogLevel parameter already exists, you can change it using this command:

vmkiscsid -x "update internal set value='8' where key='option.LogLevel';"

Note: This example command raises the debug level to 8. You can enter a value from 0-999.

Disabling Verbose Debugging

To disable logging and return the system to defaults, run this command:

vmkiscsid -x "delete from internal where key='option.LogLevel';"

Retrieving the iSCSI Database

You can dump the entire iSCSI database to a file using this command:

vmkiscsid --dump-db=<filename>

Listing Running/Active Targets

To list currently running targets, run this command:

vmkiscsi-tool -T vmhba##

Listing Discovered Targets

This command lists all targets that are discovered but that may not be logged in or active:

vmkiscsi-tool -T vmhba##

Note: Targets may be inactive due to authentication problems, target compatibility issues, or target side filtering.

Related Information

Tech Support Mode for Emergency Support
Using Tech Support Mode in ESXi 4.1, ESXi 5.x, and ESXi 6.x

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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