Iscsi discovery configuration and saving of nodes

Scenario: On Suse, the device discovery results are recorded in the/etc/iSCSI/node, which is effective upon startup and restart. In the RedHat system, the node found by the device is recorded in/var/lib/iSCSI/nodes. This file is created by the iSCSI initor program and can be found in/etc/init. d/iscsid service, view the START process, use this file.

From: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/5/html/Online_Storage_Reconfiguration_Guide/iscsiconfig.html

The default iSCSI configuration file is/etc/iSCSI/iscsid. conf. This file contains

Iscsi configuration provided to iscsid and iscsiadm commands

During device discovery, the iscsiadm tool uses the/etc/iSCSI/iscsid. conf file.

To create two types of records.

Node records in the/var/lib/iSCSI/nodes directory

When logging on to a device, iscsiadm uses the configuration in this file

Found records in/var/lib/iSCSI/discovery_type

When the same device is found, iscsiam uses the configuration of this file

When using different configurations, you must first Delete the current discovery record (

/Var/lib/iSCSI/discovery_type) use the following command:

Iscsiadm-M discovery-T discovery_type-P target_ip: Port-O Delete [1]

Here discovery_type can be

Sendtargets, isns, or FW

There are two methods to reconfigure the record configuration of the device.

1) directly edit the/etc/iSCSI/iscsid. conf file and execute the "Discover" command:

Iscsiadm-M discovery-T discovery_type-P target_ip: Port

2) directly change the iscsiadm device discovery record Configuration:

Iscsiadm-M discovery-T discovery_type-P target_ip: Port-o Update-N setting-V % value

Refer to man iscsiadm for more valid information,

Iscsi discovery configuration and saving of nodes