From: Eric Blake <eblake@redhat.com>
To: qemu-devel@nongnu.org
Cc: vsementsov@virtuozzo.com, rjones@redhat.com, qemu-block@nongnu.org
Subject: [Qemu-devel] [PATCH] docs: Update preferred NBD device syntax
Date: Tue, 3 Sep 2019 09:56:34 -0500 [thread overview]
Message-ID: <20190903145634.20237-1-eblake@redhat.com> (raw)
Mention the preferred URI form, especially since NBD is trying to
standardize that form: https://lists.debian.org/nbd/2019/06/msg00012.html
Signed-off-by: Eric Blake <eblake@redhat.com>
---
qemu-doc.texi | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 577d1e837640..c83fb347d77e 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -297,7 +297,14 @@ qemu-system-i386 -drive file=iscsi://192.0.2.1/iqn.2001-04.com.example/1
@item NBD
QEMU supports NBD (Network Block Devices) both using TCP protocol as well
-as Unix Domain Sockets.
+as Unix Domain Sockets. With TCP, the default port is 10809.
-Syntax for specifying a NBD device using TCP
+Syntax for specifying a NBD device using TCP, in preferred URI form:
+``nbd://<server-ip>[:<port>]/[<export>]''
+
+Syntax for specifying a NBD device using Unix Domain Sockets; remember
+that '?' is a shell glob character and may need quoting:
+``nbd+unix:///[<export>]?socket=<domain-socket>''
+
+Older syntax that is also recognized:
``nbd:<server-ip>:<port>[:exportname=<export>]''
-Syntax for specifying a NBD device using Unix Domain Sockets
``nbd:unix:<domain-socket>[:exportname=<export>]''
Example for TCP
@example
-qemu-system-i386 --drive file=nbd:192.0.2.1:30000
+qemu-system-i386 --drive file=nbd://192.0.2.1:30000
@end example
Example for Unix Domain Sockets
@example
-qemu-system-i386 --drive file=nbd:unix:/tmp/nbd-socket
+qemu-system-i386 --drive "file=nbd+unix:///?socket=/tmp/nbd-socket"
@end example
@item SSH
--
2.21.0
next reply other threads:[~2019-09-03 14:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-03 14:56 Eric Blake [this message]
2019-09-03 18:50 ` [Qemu-devel] [Qemu-block] [PATCH] docs: Update preferred NBD device syntax John Snow
2019-09-03 19:02 ` Eric Blake
2019-09-03 19:06 ` John Snow
2019-09-04 8:18 ` Daniel P. Berrangé
2019-09-04 12:50 ` Eric Blake
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