RTM-ATCA-SXXX Overview
6806800H62B ATCA‐S201InstallationandUseGuide88
7.1.6 iSCSI 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
