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flexnbd-proxy: Add UNIX socket support for the listen address

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nick
2013-04-15 16:52:54 +01:00
parent 4e70db8d7f
commit 33ee19dc5a
6 changed files with 78 additions and 32 deletions
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19
README.proxy.txt
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@@ -27,13 +27,12 @@ returning the response to the client.
USAGE
-----
$ flexnbd-proxy --addr <ADDR> --port <PORT>
$ flexnbd-proxy --addr <ADDR> [ --port <PORT> ]
--conn-addr <ADDR> --conn-port <PORT> [--bind <ADDR>] [option]*
Proxy requests from an NBD client to an NBD server, resiliently. Only one
client can be connected (to the address specified by --addr and --port) at a
time, and ACLs cannot be applied to the client, as they can be to clients
connecting directly to a flexnbd in serve mode.
client can be connected at a time, and ACLs cannot be applied to the client, as they
can be to clients connecting directly to a flexnbd in serve mode.
On starting up, the proxy will attempt to connect to the server specified by
--conn-addr and --conn-port (from the address specified by --bind, if given). If
@@ -62,10 +61,11 @@ Options
~~~~~~~
*--addr, -l ADDR*:
The address to listen on. Required.
The address to listen on. If this begins with a '/', it is assumed to be
a UNIX domain socket to create. Otherwise, it should be an IPv4 or IPv6
address.
*--port, -p PORT*:
The port to listen on. Required.
The port to listen on, if --addr is not a UNIX socket.
*--conn-addr, -C ADDR*:
The address of the NBD server to connect to. Required.
@@ -161,17 +161,16 @@ Current issues include:
* Only old-style NBD negotiation is supported
* Only one request may be in-flight at a time
* All I/O is blocking, and signals terminate the process immediately
* No UNIX socket support
* UNIX socket support is limited to the listen address
* FLUSH and TRIM commands, and the FUA flag, are not supported
* DISCONNECT requests do not get passed through to the NBD server
* No active timeout-retry of requests - we trust the kernel's idea of failure
AUTHOR
------
Written by Alex Young <alex@bytemark.co.uk>.
Original concept and core code by Matthew Bloch <matthew@bytemark.co.uk>.
Some additions by Nick Thomas <nick@bytemark.co.uk>
Proxy mode written by Nick Thomas <nick@bytemark.co.uk>
COPYING
-------