From 1a006d7cc82e31074c686c8827cb8824c630e31c Mon Sep 17 00:00:00 2001 From: Philipp Kern Date: Fri, 30 Nov 2012 20:52:50 +0000 Subject: update parmfile format; add cio_ignore --- en/boot-installer/s390.xml | 31 ++++++++++++++++++++++++++++--- 1 file changed, 28 insertions(+), 3 deletions(-) diff --git a/en/boot-installer/s390.xml b/en/boot-installer/s390.xml index e72275b93..4301a83ec 100644 --- a/en/boot-installer/s390.xml +++ b/en/boot-installer/s390.xml @@ -22,9 +22,13 @@ standard installation system. On S/390 you can append boot parameters in the parm file. This file can -either be in ASCII or EBCDIC format. -A sample parm file parmfile.debian is provided with -the installation images. +either be in ASCII or EBCDIC format. It needs to be fixed-width with +80 characters per line. A sample parm file +parmfile.debian is provided with the installation +images. If a parameter is too long to fit into the 80 characters limit +it can simply be continued in the first column of the next line. All +the lines are concatenated without spaces when being passed to the +kernel. + + +If you boot the installer in a logical partition (LPAR) or virtual +machine (VM) where a lot of devices are visible, you might want to +instruct the kernel to restrict the list to a fixed set of devices. This +is advised for the installer's boot process if a lot of disks are +visible. The "cio_ignore" option supports both a blacklist (to only +disallow a few devices) and a whitelist (to only allow specific +devices): + + + # blacklist: just ignore the two devices 300 and 301 + cio_ignore=0.0.0300-0.0.0301 + # whitelist: ignore everything but 1150, FD00, FD01 and FD02 + cio_ignore=all,!0.0.1150,!0.0.fd00-0.0.fd02 + + +Please note that all devices numbers' hex digits need to be specified in +lower case. To be considered during the installer's boot process the +above option needs to be added to parmfile.debian. + -- cgit v1.2.3