See also:
http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/release-notes/as-s390/RELEASE-NOTES-U3-s390-en.htmlSupport for fabric rediscovery through sysfs is now available in Red Hat Enterprise Linux 4 Update 3. For the Qlogic (qla2xxx) and Emulex (lpfc) Fibre Channel HBA drivers, run the following commands to perform redisocvery and rescan for new storage:
echo "1" > /sys/class/fc_host/hostXYZ/issue_lip
echo "- - -" > /sys/class/scsi_host/hostXYZ/scan
In some Fibre Channel configurations, an operating system will automatically detect the addition of a new target device while the system is running. In other configurations, it is necessary to issue the following command to detect a new target device:
echo 1 > /sys/class/fc_host/hostn/issue_lip
Where hostn corresponds to the appropriate adapter.
When a new Logical Unit is created on a particular target, a command such as the following is required to detect and configure it:
echo "b t l" > /sys/class/scsi_host/hostn/scan
Where b is the bus, t is the target, and l is the LUN to be scanned on hostn.
Wild cards can also be used, such as the following example:
echo "- - -" > /sys/class/scsi_host/host2/scan
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
