Re: [Nbd] [RFC 4/4] nbd: Add support for nbd as root device

[Wouter Verhelst]

On Tue, Jan 13, 2015 at 02:44:25PM +0100, Markus Pargmann wrote:
> Adding support to nbd to use it as a root device. This code essentially
> provides a minimal nbd-client implementation within the kernel. It opens
> a socket and makes the negotiation with the server. Afterwards it passes
> the socket to the normal nbd-code to handle the connection.
> 
> The arguments for the server are passed via module parameter. The
> module parameter has the format
> '[<SERVER_IP>:]<SERVER_PORT>/<EXPORT_NAME>'.
> SERVER_IP is optional. If it is not available it will use the
> root_server_addr transmitted through DHCP.
> 
> Based on those arguments, the connection to the server is established
> and is connected to the nbd0 device. The rootdevice therefore is
> root=/dev/nbd0.

Not that I'm opposed to this, but you do realize that doing nbd-client
from initramfs or similar is possible, right? Most initramfs
implementations these days support it.

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