From: Josef Bacik <josef@toxicpanda.com>
To: roman.stratiienko@globallogic.com
Cc: linux-kernel@vger.kernel.org, josef@toxicpanda.com,
nbd@other.debian.org, A.Bulyshchenko@globallogic.com,
linux-block@vger.kernel.org, axboe@kernel.dkn.org
Subject: Re: [PATCH 2/2] nbd: add support for nbd as root device
Date: Thu, 13 Jun 2019 09:52:42 -0400 [thread overview]
Message-ID: <20190613135241.aghcrrz7rg2au3bw@MacBook-Pro-91.local> (raw)
In-Reply-To: <20190612163144.18486-2-roman.stratiienko@globallogic.com>
On Wed, Jun 12, 2019 at 07:31:44PM +0300, roman.stratiienko@globallogic.com wrote:
> From: Roman Stratiienko <roman.stratiienko@globallogic.com>
>
> 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 kernel command line.
> The kernel command line has the format
> 'nbdroot=[<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.
>
> Patch was initialy posted by Markus Pargmann <mpa@pengutronix.de>
> and can be found at https://lore.kernel.org/patchwork/patch/532556/
>
> Change-Id: I78f7313918bf31b9dc01a74a42f0f068bede312c
> Signed-off-by: Roman Stratiienko <roman.stratiienko@globallogic.com>
> Reviewed-by: Aleksandr Bulyshchenko <A.Bulyshchenko@globallogic.com>
Just throw nbd-client in your initramfs. Every nbd server has it's own
handshake protocol, embedding one particular servers handshake protocol into the
kernel isn't the answer here. Thanks,
Josef
next prev parent reply other threads:[~2019-06-13 15:10 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-12 16:31 [PATCH 1/2] nbd: make sock_xmit() and nbd_add_socket() more generic roman.stratiienko
2019-06-12 16:31 ` [PATCH 2/2] nbd: add support for nbd as root device roman.stratiienko
2019-06-13 12:56 ` Eric Blake
2019-06-13 13:02 ` Eric Blake
2019-06-13 13:14 ` Eric Blake
2019-06-13 13:52 ` Josef Bacik [this message]
2019-06-13 14:45 ` Roman Stratiienko
2019-06-13 14:55 ` Josef Bacik
2019-06-13 16:21 ` Roman Stratiienko
2019-06-13 16:54 ` Josef Bacik
2019-06-14 10:33 ` Wouter Verhelst
2019-06-14 13:38 ` Josef Bacik
2019-06-14 21:23 ` Wouter Verhelst
2019-06-13 15:14 ` Eric Blake
2019-06-13 16:05 ` Roman Stratiienko
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