Chapter 2HPSS Planning74September 2002HPSS Installation GuideRelease 4.5, Revision 26.Now, rebuild the kernel configuration by running the "make config" command andanswering "yes" when questioned about AIO support. The default value of 4096 should besufficient for the number of system-wide AIO requests.At this time, you should also configure the kernel to support your disk or tape devices. Iftape device access is required, be sure to also enable the kernel for SCSI tape support. Seethe following section for information on device support on the Linux platform.Note that the Linux kernel configuration varibles that control the KAIO facility areCONFIG_AIOandCONFIG_AIO_MAX.7.Follow your procedure for rebuilding your Linux kernel. For example:% make dep% make bzImage8.Copy the new kernel image to the boot directory, update the lilo configuration, and recyclethe system. For example:% cd /boot% cp /usr/src/linux-2.4.18/arch/i386/boot/bzImage vmlinux-2.4.18% vi /etc/lilo.conf% /sbin/lilo% shutdown -Fr 09.If you need to rebuild the HPSS Mover, make a link from/usr/src/linux/include/linux/aio.hto/usr/include/linux/aio.h. For example:% cd /usr/include/linux% ln -s /usr/src/linux-2.4.18/include/linux/aio.h2.6.10.2Tape Devices2.6.10.2.1AIXAll tape devices that will be used for HPSS data must be set to handle variable block sizes (to allowfor the ANSI standard 80-byte volume label and file section headers).To set the devices to use variable blocks on an AIX platform, either use thechdevcommand(substituting the appropriate device name forrmt0- also take into accounts differences in theinterface based on the specific device driver supporting the device):chdev -l rmt0 -a block_size=0orsmitty:smitty tape
