Emerson ATCA-S201 manual ISCSI Discovery filter configuration expert mode

RTM-ATCA-SXXX Overview

7.1.6iSCSI Discovery filter configuration (expert mode)

The iSCSI service running on the storage blade includes the ability to limit the targets each host will see during discovery; this can often significantly reduce the iSCSI boot time. The filter mechanism uses the host IP address as criteria to expose or hide iSCSI targets listed in discovery.

Note: This mechanism is not meant to replace the CHAP security features used to authenticate a host and target.

The iSCSI discovery filter is configured via simple edits to a pair of text based configuration files:

/etc/initiators.allow

/etc/initiators.deny

The file syntax is explained in the next section. File changes become active immediately upon save, no reboot is necessary.

Notes: Comment lines must start with a ‘#’ as first character.

-The file consists of one or more iSCSI iqn Target names.

-If a target iSCSI iqn is not listed in these files, no filtering is applied (this is default case)

-To establish a discovery filter, a target’s iSCSI iqn name must appear in both files.

/etc/initiators.allow

Enter the iSCSI iqn followed by one or more ip addresses. Use a comma to separate multiple IP address entries. (Note: Entries must not use tabs)

iqn.1995-07.com.emerson:BladeHost.Target0 192.168.1.109 iqn.1995-07.com.emerson:BladeHost.Target1 192.168.1.108, 192.168.1.110

/etc/initiators.deny

For each iSCSI iqn listed above, make a corresponding entry as shown. Each entry should consist of the iSCSI iqn, followed by the word ALL (Note: Entries must not use tabs).

iqn.1995-07.com.emerson:BladeHost.Target0 ALL

iqn.1995-07.com.emerson:BladeHost.Target1 ALL

6806800H62B ATCA‐S201 Installation and Use Guide 88