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-rw-r--r--Documentation/filesystems/9p.txt18
1 files changed, 16 insertions, 2 deletions
diff --git a/Documentation/filesystems/9p.txt b/Documentation/filesystems/9p.txt
index 57e0b80a527..c0236e753bc 100644
--- a/Documentation/filesystems/9p.txt
+++ b/Documentation/filesystems/9p.txt
@@ -37,6 +37,15 @@ For Plan 9 From User Space applications (http://swtch.com/plan9)
mount -t 9p `namespace`/acme /mnt/9 -o trans=unix,uname=$USER
+For server running on QEMU host with virtio transport:
+
+ mount -t 9p -o trans=virtio <mount_tag> /mnt/9
+
+where mount_tag is the tag associated by the server to each of the exported
+mount points. Each 9P export is seen by the client as a virtio device with an
+associated "mount_tag" property. Available mount tags can be
+seen by reading /sys/bus/virtio/drivers/9pnet_virtio/virtio<n>/mount_tag files.
+
OPTIONS
=======
@@ -47,7 +56,7 @@ OPTIONS
fd - used passed file descriptors for connection
(see rfdno and wfdno)
virtio - connect to the next virtio channel available
- (from lguest or KVM with trans_virtio module)
+ (from QEMU with trans_virtio module)
rdma - connect to a specified RDMA channel
uname=name user name to attempt mount as on the remote server. The
@@ -85,7 +94,12 @@ OPTIONS
port=n port to connect to on the remote server
- noextend force legacy mode (no 9p2000.u semantics)
+ noextend force legacy mode (no 9p2000.u or 9p2000.L semantics)
+
+ version=name Select 9P protocol version. Valid options are:
+ 9p2000 - Legacy mode (same as noextend)
+ 9p2000.u - Use 9P2000.u protocol
+ 9p2000.L - Use 9P2000.L protocol
dfltuid attempt to mount as a particular uid