[Qemu-devel] [PATCH v1] qemu: Document GlusterFS block driver usage

[Bharata B Rao]

qemu: Document GlusterFS block driver usage

From: Bharata B Rao <address@hidden>

Signed-off-by: Bharata B Rao <address@hidden>
---
 qemu-doc.texi   |   49 +++++++++++++++++++++++++++++++++++++++++++++++++
 qemu-options.hx |   17 +++++++++++++++++
 2 files changed, 66 insertions(+)

diff --git a/qemu-doc.texi b/qemu-doc.texi
index 35cabbc..a381512 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -421,6 +421,7 @@ snapshots.
 * disk_images_nbd::           NBD access
 * disk_images_sheepdog::      Sheepdog disk images
 * disk_images_iscsi::         iSCSI LUNs
+* disk_images_gluster::       GlusterFS disk images
 @end menu
 
 @node disk_images_quickstart
@@ -805,7 +806,55 @@ qemu-system-i386 -iscsi 
initiator-name=iqn.qemu.test:my-initiator \
     -cdrom iscsi://127.0.0.1/iqn.qemu.test/2
 @end example
 
address@hidden disk_images_gluster
address@hidden GlusterFS disk images
 
+GlusterFS is an user space distributed file system.
+
+You can boot from the GlusterFS disk image with the command:
address@hidden
+qemu-system-x86_64 -drive 
address@hidden://address@hidden:@var{port}]]/@var{volname}/@var{image}[?socket=...]
address@hidden example
+
address@hidden is the protocol.
+
address@hidden specifies the transport type used to connect to gluster
+management daemon (glusterd). Valid transport types are
+tcp, unix and rdma. If a transport type isn't specified, then tcp
+type is assumed.
+
address@hidden specifies the server where the volume file specification for
+the given volume resides. This can be either hostname, ipv4 address
+or ipv6 address. ipv6 address needs to be within square brackets [ ].
+If transport type is unix, then @var{server} field should not be specifed.
+Instead @var{socket} field needs to be populated with the path to unix domain
+socket.
+
address@hidden is the port number on which glusterd is listening. This is 
optional
+and if not specified, QEMU will send 0 which will make gluster to use the
+default port. If the transport type is unix, then @var{port} should not be
+specified.
+
address@hidden is the name of the gluster volume which contains the disk image.
+
address@hidden is the path to the actual disk image that resides on gluster 
volume.
+
+You can create a GlusterFS disk image with the command:
address@hidden
+qemu-img create gluster://@var{server}/@var{volname}/@var{image} @var{size}
address@hidden example
+
+Examples
address@hidden
+qemu-system-x86_64 -drive file=gluster://1.2.3.4/testvol/a.img
+qemu-system-x86_64 -drive file=gluster+tcp://1.2.3.4/testvol/a.img
+qemu-system-x86_64 -drive file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img
+qemu-system-x86_64 -drive 
file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img
+qemu-system-x86_64 -drive 
file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img
+qemu-system-x86_64 -drive 
file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img
+qemu-system-x86_64 -drive 
file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket
+qemu-system-x86_64 -drive file=gluster+rdma://1.2.3.4:24007/testvol/a.img
address@hidden example
 
 @node pcsys_network
 @section Network emulation
diff --git a/qemu-options.hx b/qemu-options.hx
index 46f0539..d57fb91 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2018,6 +2018,23 @@ qemu-system-i386 --drive 
file=sheepdog:192.0.2.1:30000:MyVirtualMachine
 
 See also @url{http://http://www.osrg.net/sheepdog/}.
 
address@hidden GlusterFS
+GlusterFS is an user space distributed file system.
+QEMU supports the use of GlusterFS volumes for hosting VM disk images using
+TCP, Unix Domain Sockets and RDMA transport protocols.
+
+Syntax for specifying a VM disk image on GlusterFS volume is
address@hidden
+gluster[+transport]://[server[:port]]/volname/image[?socket=...]
address@hidden example
+
+
+Example
address@hidden
+qemu-system-x86_84 --drive file=gluster://192.0.2.1/testvol/a.img
address@hidden example
+
+See also @url{http://www.gluster.org}.
 @end table
 ETEXI