Attributes for fcp
You can find the attributes for re-IPL type fcp in the /sys/firmware/reipl/fcp sysfs directory.
- device
- Device number of the FCP device that is used for re-IPL. For example, 0.0.7412. Note: IPL is possible only from subchannel set 0.
- wwpn
- World wide port number of the FCP re-IPL device.
- lun
- Logical unit number of the FCP re-IPL device.
- bootprog
- Boot program selector. Used to select the boot configuration in the zipl menu (if available).
- br_lba
- Boot record logical block address. Master boot record. Is always 0 for Linux®.
- scp_data
- Kernel parameters to be used for the next FCP re-IPL.
A leading equal sign (=) means that the existing kernel parameter line in the boot configuration is ignored and the boot process uses the kernel parameters in the scp_data attribute only.
- clear
- A flag that controls memory clearing for a reboot from the device. Valid values are 1 to clear
memory during the boot process, or 0 to omit clearing memory during the boot process. Booting
without clearing memory is faster and it is the default.
Regardless of the setting for memory clearing, all hotplug memory is offline after the reboot.
This attribute is present only for Linux in LPAR mode on z14 or later hardware.