From Fedora Project Wiki
< Dracut
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* Command line length: 2048 | * Command line length: 2048 | ||
* dhcp root-path: 255 | * dhcp root-path: 255 | ||
== Example of usages == | |||
#FIXME | |||
== Configuration in initrd == | == Configuration in initrd == |
Revision as of 15:10, 2 July 2009
Dracut kernel command line parameters
Limitations
- Command line length: 2048
- dhcp root-path: 255
Example of usages
- FIXME
Configuration in initrd
/conf/conf.d/*
Standard
init=<path to real init>
root=<path to blockdevice>
DHCP
root=dhcp
NFSv3
root=[<server-ip>:]<root-dir>[:<nfs-options>]
root=dhcp
root-path=<server-ip>:<root-dir>[,<nfs-options>]
Deprecated
root=/dev/nfs nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]
NFSv4
- root=nfs4:[<server-ip>:]<root-dir>[:<nfs-options>]
- root=dhcp
iSCSI
- root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>::
- root=??? iscsiroot=...::
- root=??? iscsi_initiator= iscsi_target_name= iscsi_target_ip= iscsi_target_port= iscsi_target_group= iscsi_username= iscsi_password= iscsi_in_username= iscsi_in_password=::
- root=??? iscsi_firmware::
NBD
- root=nbd:<server>:<port>[:<fstype>][:<mountopts>]
- root=dhcp
root=dhcp alone directs initrd to look at the DHCP root-path where NBD options can be specified. This syntax is only usable in cases where you are directly mounting the volume as the rootfs.
Network
- ip=[dhcp|on|any]
- ip=<interface>:[dhcp|on|any]
- ip=<client-IP-number>:<gateway-IP-number>:<netmask>:<client-hostname>:<interface>:[dhcp|on|any|]
Misc
- rdblacklist=<modulename>
Debug ¶
* rdinitdebug o set -x for the dracut shell * rdbreak=[pre-udev|pre-mount|mount|pre-pivot|] o drop the shell on defined breakpoint * rdudevinfo o set udev to loglevel info * rdudevdebug o set udev to loglevel debug * rdnetdebug o debug network scripts in dracut