sg3_utils package provides the
rescan-scsi-bus.sh script, which can automatically update the logical unit configuration of the host as needed (after a device has been added to the system). The
rescan-scsi-bus.sh script can also perform an
issue_lip on supported devices. For more information about how to use this script, refer to
To install the
sg3_utils package, run
yum install sg3_utils.
Known Issues with rescan-scsi-bus.sh
When using the
rescan-scsi-bus.sh script, take note of the following known issues:
In order for
rescan-scsi-bus.sh to work properly,
LUN0 must be the first mapped logical unit. The
rescan-scsi-bus.sh can only detect the first mapped logical unit if it is
rescan-scsi-bus.sh will not be able to scan any other logical unit unless it detects the first mapped logical unit even if you use the
A race condition requires that
rescan-scsi-bus.sh be run twice if logical units are mapped for the first time. During the first scan,
rescan-scsi-bus.sh only adds
LUN0; all other logical units are added in the second scan.
A bug in the
rescan-scsi-bus.sh script incorrectly executes the functionality for recognizing a change in logical unit size when the
--remove option is used.
rescan-scsi-bus.sh script does not recognize ISCSI logical unit removals.