the init system performs fsck before remount, you might want to use this
option to avoid duplication.
+iso-scan/filename
+~~~~~~~~~~~~~~~~~
+
+Using iso-scan/filename with a Fedora/Red Hat/CentOS Live iso should just work
+by copying the original kernel cmdline parameters.
+
+[listing]
+.Example
+--
+menuentry 'Live Fedora 20' --class fedora --class gnu-linux --class gnu --class os {
+ set isolabel=Fedora-Live-LXDE-x86_64-20-1
+ set isofile="/boot/iso/Fedora-Live-LXDE-x86_64-20-1.iso"
+ loopback loop $isofile
+ linux (loop)/isolinux/vmlinuz0 boot=isolinux iso-scan/filename=$isofile root=live:LABEL=$isolabel ro rd.live.image quiet rhgb
+ initrd (loop)/isolinux/initrd0.img
+}
+--
Misc
~~~~
have been loaded. This parameter can be specified multiple times.
**rd.retry=**__<seconds>__::
- specify how long dracut should wait for devices to appear.
+ specify how long dracut should retry the initqueue to configure devices.
The default is 30 seconds. After 2/3 of the time, degraded raids are force
started. If you have hardware, which takes a very long time to announce its
drives, you might want to extend this value.
+**rd.timeout=**__<seconds>__::
+ specify how long dracut should wait for devices to appear. The
+ default is '0', which means 'forever'. Note that this timeout
+ should be longer than rd.retry to allow for proper configuration.
+
**rd.noverifyssl**::
accept self-signed certificates for ssl downloads.
Debug
~~~~~
If you are dropped to an emergency shell, the file
-_/run/initramfs/rdsosreport.txt_ is created, which can be safed to a (to be
+_/run/initramfs/rdsosreport.txt_ is created, which can be saved to a (to be
mounted by hand) partition (usually /boot) or a USB stick. Additional debugging
info can be produced by adding **rd.debug** to the kernel command line.
_/run/initramfs/rdsosreport.txt_ contains all logs and the output of some tools.
only activate the raid sets with the given UUID. This parameter can be
specified multiple times.
+MULTIPATH
+~~~~~~~~~
+**rd.multipath=0**::
+ disable multipath detection
+
FIPS
~~~~
**rd.fips**::
**nameserver=**__<IP>__ [**nameserver=**__<IP>__ ...]::
specify nameserver(s) to use
+**rd.peerdns=0**::
+ Disable DNS setting of DHCP parameters.
+
**biosdevname=0**::
boolean, turn off biosdevname network interface renaming
**rd.nfs.domain=**__<NFSv4 domain name>__::
Set the NFSv4 domain name. Will overwrite the settings in _/etc/idmap.conf_.
+**rd.net.dhcp.retry=**__<cnt>__::
+ If this option is set, dracut will try to connect via dhcp <cnt> times before failing.
+ Default is 1.
+
+**rd.net.timeout.dhcp=**__<arg>__::
+ If this option is set, dhclient is called with "-timeout <arg>".
+
+**rd.net.timeout.iflink=**__<seconds>__::
+ Wait <seconds> until link shows up. Default is 60 seconds.
+
+**rd.net.timeout.ifup=**__<seconds>__::
+ Wait <seconds> until link has state "UP". Default is 20 seconds.
+
+**rd.net.timeout.route=**__<seconds>__::
+ Wait <seconds> until route shows up. Default is 20 seconds.
+
+**rd.net.timeout.ipv6dad=**__<seconds>__::
+ Wait <seconds> until IPv6 DAD is finished. Default is 50 seconds.
+
+**rd.net.timeout.ipv6auto=**__<seconds>__::
+ Wait <seconds> until IPv6 automatic addresses are assigned. Default is 40 seconds.
+
+**rd.net.timeout.carrier=**__<seconds>__::
+ Wait <seconds> until carrier is recognized. Default is 5 seconds.
+
CIFS
~~~
**root=**cifs://[__<username>__[:__<password>__]@]__<server-ip>__:__<root-dir>__::
**rd.iscsi.ibft** **rd.iscsi.ibft=1**:
Turn on iBFT autoconfiguration for the interfaces
+**rd.iscsi.waitnet=0**:
+ Turn off waiting for all interfaces to be up before trying to login to the iSCSI targets.
+
+**rd.iscsi.testroute=0**:
+ Turn off checking, if the route to the iSCSI target IP is possible before trying to login.
+
FCoE
~~~~
**fcoe=**__<edd|interface|MAC>__:__{dcb|nodcb}__::
=====================
**root=**live:__<url>__::
-Boots a live image retrieved from __<url>__. Valid handlers: __http, httpd, ftp, tftp__.
+Boots a live image retrieved from __<url>__. Valid handlers: __http, https, ftp, torrent, tftp__.
+
[listing]
.Example
--
root=live:http://example.com/liveboot.img
root=live:ftp://ftp.example.com/liveboot.img
+root=live:torrent://example.com/liveboot.img.torrent
--
**rd.live.debug=**1::
Specifies the directory within the squashfs where the ext3fs.img or rootfs.img
can be found. By default, this is __LiveOS__.
+**rd.live.ram=**1::
+Copy the complete image to RAM and use this for booting. This is useful
+when the image resides on i.e. a DVD which needs to be ejected later on.
+
+**rd.live.overlay=**_<devspec>_:_(<pathspec>|auto)__
+Allow the usage of a permanent overlay.
+_<devspec>_ specifies the path to a device with a mountable filesystem.
+_<pathspec>_ is the path to a file within that filesystem, which shall be used to
+persist the changes made to the device specified by **root=live:__<url>__** option.
++
+[listing]
+.Example
+--
+rd.live.overlay=/dev/sdb1:persistent-overlay.img
+--
+
+**rd.live.overlay.thin=**1::
+Enables the usage of thin snapshots instead of classic dm snapshots.
+The advantage of thin snapshots is, that they support discards, and will free
+blocks which are not claimed by the filesystem. In this use case this means,
+that memory is given back to the kernel, when the filesystem does not claim it
+anymore.
+
**rd.writable.fsimg=**1::
Enables writable filesystem support. The system will boot with a fully
writable filesystem without snapshots __(see notes above about available live boot options)__.
You can use the **rootflags** option to set mount options for the live
filesystem as well __(see documentation about rootflags in the **Standard** section above)__.
+This implies that the whole image is copied to RAM before the boot continues.
++
+NOTE: There must be enough free RAM available to hold the complete image.
++
+This method is very suitable for diskless boots.
Plymouth Boot Splash
rd_MD_UUID:: rd.md.uuid
+rd_NO_MULTIPATH: rd.multipath=0
+
rd_NFS_DOMAIN:: rd.nfs.domain
iscsi_initiator:: rd.iscsi.initiator
projects / thirdparty / dracut.git / blobdiff