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{{admon/note|Protocol defaults to "6", LUN defaults to "0". If the "servername" field is provided by BOOTP or DHCP, then that field is used in conjunction with other associated fields to contact the boot server in the Boot stage (Section 7). However, if the "servername" field is not provided, then the "targetname" field is then used in the Discovery Service stage in conjunction with other associated fields.[http://tools.ietf.org/html/rfc4173 RFC4173]}} | {{admon/note|Protocol defaults to "6", LUN defaults to "0". If the "servername" field is provided by BOOTP or DHCP, then that field is used in conjunction with other associated fields to contact the boot server in the Boot stage (Section 7). However, if the "servername" field is not provided, then the "targetname" field is then used in the Discovery Service stage in conjunction with other associated fields.[http://tools.ietf.org/html/rfc4173 RFC4173]}} | ||
<pre>root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname></pre> | <pre>root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname></pre> | ||
{{admon/note| | {{admon/note|E.g. '''root=iscsi:192.168.50.1::::iqn.2009-06.dracut:target0'''}} | ||
<pre>'''root=??? netroot=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname> ...</pre> | <pre>'''root=??? netroot=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname> ...</pre> | ||
{{admon/note|Multiple netroot options allow setting up multiple iscsi disks e.g. root=UUID=12424547 netroot=iscsi:192.168.50.1::::iqn.2009-06.dracut:target0 netroot=iscsi:192.168.50.1::::iqn.2009-06.dracut:target1 not yet implemented.'''}} | {{admon/note|Multiple netroot options allow setting up multiple iscsi disks e.g. root=UUID=12424547 netroot=iscsi:192.168.50.1::::iqn.2009-06.dracut:target0 netroot=iscsi:192.168.50.1::::iqn.2009-06.dracut:target1 not yet implemented.'''}} |
Revision as of 08:28, 29 July 2009
Options
SYNOPSIS
dracut [OPTION]... <image> <kernel-version>
-f, --force
-f, --force
-m, --modules
-m, --modules LIST
-o, --omit
-o, --omit LIST
-a, --add
-a, --add LIST
-d, --drivers
-d, --drivers LIST
-k, --kmoddir
-k, --kmoddir {DIR}
--fwdir
--fwdir {DIR}
--kernel-only
--kernel-only
--no-kernel
--no-kernel
--strip
--strip
--nostrip
--nostrip
-h, --help
-h, --help
--debug
--debug
-v, --verbose
v, --verbose
-c, --conf
-c, --conf FILE
-l, --local
-l, --local
-H, --hostonly
-H, --hostonly
-i, --include
-i, --include SOURCE TARGET
-I, --install
-I, --install LIST
Dracut kernel command line parameters
The root filesystem used by the kernel is specified in the boot configuration file, as always. The traditional root=/dev/hda1 style device specification is allowed. If a label is used, as in root=LABEL=rootPart the initrd will search all available devices for an ext2 or ext3 filesystem with the appropriate label, and mount that device as the root filesystem. root=UUID=uuidnumber will mount the partition with that UUID as the root filesystem.
Limitations
- Command line length: 2048
- dhcp root-path: 255
Standard
init=<path to real init>
root=<path to blockdevice>
I18N
KEYBOARDTYPE=sun|pc
KEYTABLE=<keytable filename>
SYSFONT= Console font
SYSFONTACM= Unicode font map
UNIMAP= Unicode font map
LANG=<locale>
Bootsplash - plymouth
rd_plytheme=<theme name>
LVM
rd_NO_LVM
rd_LVM_VG=<volume group name>
crypto LUKS
rd_NO_LUKS
rd_LUKS_UUID=<luks uuid>
MD
rd_NO_MD
rd_NO_MDIMSM
rd_MD_UUID=<md uuid>
DMRAID
rd_NO_DM
rd_DM_UUID=<dmraid uuid>
DASD
dasd=....
DHCP
root=dhcp
NFS
root=[<server-ip>:]<root-dir>[:<nfs-options>]
root=nfs:[<server-ip>:]<root-dir>[:<nfs-options>]
root=nfs4:[<server-ip>:]<root-dir>[:<nfs-options>]
root=dhcp root-path=<server-ip>:<root-dir>[,<nfs-options>]
root=dhcp root-path=nfs:<server-ip>:<root-dir>[,<nfs-options>]
root=dhcp root-path=nfs4:<server-ip>:<root-dir>[,<nfs-options>]
root=/dev/nfs nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]
iSCSI
root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>::
root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>
'''root=??? netroot=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname> ...
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
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
rdinitdebug
rdbreak=[pre-udev|pre-mount|mount|pre-pivot|]
rdudevinfo
rdudevdebug
rdnetdebug
Configuration in initrd
/conf/conf.d/*