25.18. Adding/Removing a Logical Unit Through rescan-scsi-bus.sh
sg3_utilspackage provides the
rescan-scsi-bus.shscript, 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.shscript can also perform an
issue_lipon supported devices. For more information about how to use this script, refer to
To install the
yum install sg3_utils.
Known Issues with rescan-scsi-bus.sh
When using the
rescan-scsi-bus.shscript, take note of the following known issues:
- In order for
rescan-scsi-bus.shto work properly,
LUN0must be the first mapped logical unit. The
rescan-scsi-bus.shcan only detect the first mapped logical unit if it is
rescan-scsi-bus.shwill 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.shbe run twice if logical units are mapped for the first time. During the first scan,
LUN0; all other logical units are added in the second scan.
- A bug in the
rescan-scsi-bus.shscript incorrectly executes the functionality for recognizing a change in logical unit size when the
--removeoption is used.
rescan-scsi-bus.shscript does not recognize ISCSI logical unit removals.