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-rw-r--r--Documentation/filesystems/nfs/nfsroot.txt36
1 files changed, 34 insertions, 2 deletions
diff --git a/Documentation/filesystems/nfs/nfsroot.txt b/Documentation/filesystems/nfs/nfsroot.txt
index 3ba0b945aaf..2d66ed68812 100644
--- a/Documentation/filesystems/nfs/nfsroot.txt
+++ b/Documentation/filesystems/nfs/nfsroot.txt
@@ -78,7 +78,8 @@ nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]
flags = hard, nointr, noposix, cto, ac
-ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>
+ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>:
+ <dns0-ip>:<dns1-ip>
This parameter tells the kernel how to configure IP addresses of devices
and also how to set up the IP routing table. It was originally called
@@ -124,6 +125,8 @@ ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>
<hostname> Name of the client. May be supplied by autoconfiguration,
but its absence will not trigger autoconfiguration.
+ If specified and DHCP is used, the user provided hostname will
+ be carried in the DHCP request to hopefully update DNS record.
Default: Client IP address is used in ASCII notation.
@@ -156,6 +159,35 @@ ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>
Default: any
+ <dns0-ip> IP address of first nameserver.
+ Value gets exported by /proc/net/pnp which is often linked
+ on embedded systems by /etc/resolv.conf.
+
+ <dns1-ip> IP address of secound nameserver.
+ Same as above.
+
+
+nfsrootdebug
+
+ This parameter enables debugging messages to appear in the kernel
+ log at boot time so that administrators can verify that the correct
+ NFS mount options, server address, and root path are passed to the
+ NFS client.
+
+
+rdinit=<executable file>
+
+ To specify which file contains the program that starts system
+ initialization, administrators can use this command line parameter.
+ The default value of this parameter is "/init". If the specified
+ file exists and the kernel can execute it, root filesystem related
+ kernel command line parameters, including `nfsroot=', are ignored.
+
+ A description of the process of mounting the root file system can be
+ found in:
+
+ Documentation/early-userspace/README
+
@@ -202,7 +234,7 @@ They depend on various facilities being available:
cdrecord.
e.g.
- cdrecord dev=ATAPI:1,0,0 arch/i386/boot/image.iso
+ cdrecord dev=ATAPI:1,0,0 arch/x86/boot/image.iso
For more information on isolinux, including how to create bootdisks
for prebuilt kernels, see http://syslinux.zytor.com/