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Is it possible to boot with an NFS root file system?
Booting with an NFS Root Filesystem It is possible to boot most EMAC OE systems using NFS (Network File System) as the root filesystem. This method can be especially useful during development where the root filesystem is changing frequently. This can save time as well as wear on the on-board flash device.
Where do I find the IP and NFSroot parameters?
The ip and nfsroot kernel parameters (which can be hardcoded into the kernel, interactively entered at some bootloader prompts, or included in lilo.conf via the append= parameter; see the next subsection) provide all of the information necessary for the client to set up its ethernet interface and to contact the NFS server, respectively.
Which is the default NFS server IP address?
If the nfsroot’ parameter is NOT given on the command line, the default ` ”/tftpboot/%s”“ will be used. Specifies the IP address of the NFS server. The default address is determined by the ip parameter (see below). This parameter allows the use of different servers for IP autoconfiguration and NFS.
What is the default value for NFSroot in Linux?
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. To get the kernel into memory different approaches can be used.
Is it possible to boot EMAC using NFS?
It is possible to boot most EMAC OE systems using NFS (Network File System) as the root filesystem. This method can be especially useful during development where the root filesystem is changing frequently. This can save time as well as wear on the on-board flash device. This page describes the steps required to boot over NFS.
How are IP addresses used in U-Boot and NFS?
The IP addresses are used as follows: 1 U-Boot tftpboot command requests a bootscript file, and needs the TFTP server IP address , and its own IP address . 2 U-Boot tells Linux to use DHCP. 3 The NFS server uses IP addresses to control access to the exported rootfs directories.
How to boot with the root filesystem in Linux?
The console=$ {console} part tells Linux to use the console setting from the U-Boot environment variable; this will usually be something along the lines of console=ttyS0,115200n8. The root=/dev/nfs directive tells Linux to instantiate with the virtual device, /dev/nfs, as the root filesystem.
Can You Mount the NFS share in Linux?
I can mount the NFS share in linux if I use on-board storage for the rootfs. I’m pretty sure that linux is correctly autoconfiguring the network at boot using ip=dhcp (note: this is using the network’s DHCP server; it’s just handing out IP addresses, and has nothing to do with BOOTP or anything like that).
What do I need to know about the root file system?
The root file system is to be given as the root= option for the kernel, normally a partition name. In our case, we need 2 pieces of information: the name of the file containing the root file system and it’s NTFS partition name.
What does it mean to mount a file system?
Mounting a file system attaches that file system to a directory (mount point) and makes it available to the system. The root (/) file system is always mounted.
How to mount and unmount a remote file system?
The /etc/vfstab file, which will mount the file system automatically when the system is booted in multi-user state. Remote file systems frequently, such as home directories. The /etc/vfstab file, which will automatically mount the file system when the system is booted in multi-user state.
How to set up a network adapter for debugging?
To specify the bus parameters, Open Device Manager, and locate the network adapter that you want to use for debugging. Open the property page for the network adapter and make a note of the bus number, device number, and function number that are displayed under Location on the General tab.
Is there a network debugging tool for Windows 10?
For a list of supported network adapters, see Supported Ethernet NICs for Network Kernel Debugging in Windows 10 and Supported Ethernet NICs for Network Kernel Debugging in Windows 8.1. Confirm that the Debugging Tools for Windows are installed on the host system.