Volgen supporting multidisks and booster configuration for nfs and cifs

Signed-off-by: Harshavardhana <harsha@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 396 (Volgen multiple export directory support)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=396

6 files changed, 487 insertions, 440 deletions

diff --git a/extras/Makefile.am b/extras/Makefile.am
index 9ad044295..8ec2edf05 100644
--- a/extras/Makefile.am
+++ b/extras/Makefile.am
@@ -3,13 +3,7 @@ docdir = $(datadir)/doc/glusterfs/
 EditorModedir = $(docdir)/
 EditorMode_DATA = glusterfs-mode.el glusterfs.vim
 
-SUBDIRS = init.d benchmarking
+SUBDIRS = init.d benchmarking volgen
 
 EXTRA_DIST = specgen.scm MacOSX/Portfile glusterfs-mode.el glusterfs.vim migrate-unify-to-distribute.sh backend-xattr-sanitize.sh
-dist_bin_SCRIPTS = glusterfs-volgen
-
-install-exec-hook:
-	chmod 755 $(DESTDIR)$(bindir)/glusterfs-volgen
-
-CLEANFILES = 
 
diff --git a/extras/glusterfs-volgen b/extras/glusterfs-volgen
deleted file mode 100644
index 5dcb9e3ce..000000000
--- a/extras/glusterfs-volgen
+++ /dev/null
@@ -1,433 +0,0 @@
-#!/usr/bin/python
-
-import getopt, sys, os, string
-
-transport_type = "tcp"
-gfs_port = 6996
-raid_type = None
-num_replica = 2
-num_stripe = 4
-cache_size = "1GB"
-
-def print_usage (name):
-    spaces = ' ' * (len(name) + 1)
-    print name, " --name <volume-name>"
-    print "%s[--raid 0|1|10]" % spaces
-    print "%s[--transport tcp|ib-verbs]" % spaces
-    print "%s[--cache-size <cache-size>]" % spaces
-    print "%s[--port <port>]" % spaces
-    print "%s[--export-directory <export-dir>]" % spaces
-    print "%s[--num-stripe n]"  % spaces
-    print "%s[--num-replica m]" % spaces
-    print "%s[--usage, --help]" % spaces
-    print "%s[--upgrade]" % spaces
-    print "%s[--version]" % spaces
-    print "%sserver1 server2 ... serverN" % spaces
-    return
-
-def print_version (version):
-    print "glusterfs-volgen %s: A tool to generate volume files for GlusterFS." % version
-    print "Copyright (C) 2009 Gluster, Inc. <http://www.gluster.com>"
-    print """License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
-This is free software: you are free to change and redistribute it.
-There is NO WARRANTY, to the extent permitted by law."""
-
-def print_error (msg):
-    print "%s: %s" % (sys.argv[0], msg)
-
-def setup_env ():
-#    os.system ("mkdir -p "confdir"/glusterfs")
-#    os.system ("touch "confdir"/glusterfs/19993")
-    return
-
-def print_mount_volume (mount_fd, servers):
-
-    global raid_type
-    global gfs_port
-    global transport_type
-    global num_replica
-    global num_stripe
-    global cache_size
-
-    # Make sure 'server list is uniq'
-    tmp_servers = []
-    for server in servers:
-        if server in tmp_servers:
-            print "duplicate entry in server list (%s).. exiting" % server
-            sys.exit (1)
-        tmp_servers.append (server);
-
-    num_servers = len (servers)
-
-    if num_servers is 0:
-        print "no servers given, exiting"
-        sys.exit (1)
-
-    # Make sure proper RAID type is given
-    if raid_type == 1:
-        if (num_servers % num_replica) != 0:
-            print_error ("raid type (%d) and number of of hosts (%d) not appropriate" % (raid_type, num_servers))
-            sys.exit (1)
-        num_stripe = 1
-
-    if raid_type == 0:
-        if (num_servers % num_stripe) != 0:
-            print_error ("raid type (%d) and number of of hosts (%d) not appropriate" % (raid_type, num_servers))
-            sys.exit (1)
-        num_replica = 1
-
-    if raid_type == 10:
-        if (num_servers % (num_replica * num_stripe)) != 0:
-            print_error ("raid type (%d) and number of of hosts (%d) not appropriate" % (raid_type, num_servers))
-            sys.exit (1)
-
-    cmdline = string.join (sys.argv, ' ')
-    mount_fd.write ("## file auto generated by %s (mount.vol)\n" % sys.argv[0])
-    mount_fd.write ("# Cmd line:\n")
-    mount_fd.write ("# $ %s\n\n" % cmdline)
-
-    if raid_type is not None:
-        # Used for later usage
-        mount_fd.write ("# RAID %d\n" % raid_type)
-
-    mount_fd.write ("# TRANSPORT-TYPE %s\n" % transport_type)
-    mount_fd.write ("# PORT %d\n\n" % gfs_port)
-
-    for host in servers:
-        mount_fd.write ("volume %s\n" % host)
-        mount_fd.write ("    type protocol/client\n")
-        mount_fd.write ("    option transport-type %s\n" % transport_type)
-        mount_fd.write ("    option remote-host %s\n" % host)
-        mount_fd.write ("    option remote-port %d\n" % gfs_port)
-        mount_fd.write ("    option remote-subvolume brick\n")
-        mount_fd.write ("end-volume\n\n")
-
-    subvolumes = []
-    subvolumes.append (host)
-
-    # Stripe section.. if given
-    if raid_type is 0 or raid_type is 10:
-        subvolumes = []
-        temp = []
-        flag = 0
-        for host in servers:
-            temp.append (host)
-            flag += 1
-            if (flag % num_stripe) is 0:
-                subvolumes.append (string.join (temp, ' '))
-                temp = []
-
-        max_stripe_idx = len (servers) / num_stripe
-        stripe_idx = 0
-        while stripe_idx < max_stripe_idx:
-            mount_fd.write ("volume stripe-%d\n" % stripe_idx)
-            mount_fd.write ("    type cluster/stripe\n")
-            mount_fd.write ("    subvolumes %s\n" % subvolumes[stripe_idx])
-            mount_fd.write ("end-volume\n\n")
-            stripe_idx += 1
-
-    # Replicate section
-    if raid_type is 1 or raid_type is 10:
-        if raid_type is 1:
-            subvolumes = []
-            temp = []
-            flag = 0
-            for host in servers:
-                temp.append (host)
-                flag += 1
-                if (flag % num_replica) is 0:
-                    subvolumes.append (string.join (temp, ' '))
-                    temp = []
-        else:
-            subvolumes = []
-            temp = []
-            flag = 0
-            while flag < stripe_idx:
-                temp.append ("stripe-%d" % flag)
-                flag += 1
-                if (flag % num_replica) is 0:
-                    subvolumes.append (string.join (temp, ' '))
-                    temp = []
-
-        max_mirror_idx = len (servers) / (num_replica * num_stripe)
-        mirror_idx = 0
-        while mirror_idx < max_mirror_idx:
-            mount_fd.write ("volume mirror-%d\n" % mirror_idx)
-            mount_fd.write ("    type cluster/replicate\n")
-            mount_fd.write ("    subvolumes %s\n" % subvolumes[mirror_idx])
-            mount_fd.write ("end-volume\n\n")
-            mirror_idx += 1
-
-    # Distribute section
-    if raid_type is None:
-        subvolumes = []
-        for host in servers:
-            subvolumes.append (host)
-
-    elif raid_type is 0:
-        subvolumes = []
-        flag = 0
-        while flag < stripe_idx:
-            subvolumes.append ("stripe-%d" % flag)
-            flag += 1
-    else:
-        subvolumes = []
-        flag = 0
-        while flag < mirror_idx:
-            subvolumes.append ("mirror-%d" % flag)
-            flag += 1
-
-    if len (subvolumes) > 1:
-        mount_fd.write ("volume distribute\n")
-        mount_fd.write ("    type cluster/distribute\n")
-        mount_fd.write ("    subvolumes %s\n" % string.join (subvolumes, ' '))
-        mount_fd.write ("end-volume\n\n")
-        subvolumes[0] = "distribute"
-
-    mount_fd.write ("volume writebehind\n")
-    mount_fd.write ("    type performance/write-behind\n")
-    mount_fd.write ("    option cache-size 4MB\n")
-    mount_fd.write ("    subvolumes %s\n" % subvolumes[0])
-    mount_fd.write ("end-volume\n\n")
-
-    mount_fd.write ("volume io-cache\n")
-    mount_fd.write ("    type performance/io-cache\n")
-    mount_fd.write ("    option cache-size %s\n" % cache_size)
-    mount_fd.write ("    subvolumes writebehind\n")
-    mount_fd.write ("end-volume\n\n")
-
-    return
-
-def print_export_volume (exp_fd, export_dir):
-
-    global transport_type
-    global gfs_port
-
-    cmdline = string.join (sys.argv, ' ')
-    exp_fd.write ("## file auto generated by %s (export.vol)\n" % sys.argv[0])
-    exp_fd.write ("# Cmd line:\n")
-    exp_fd.write ("# $ %s\n\n" % cmdline)
-
-    exp_fd.write ("# TRANSPORT-TYPE %s\n" % transport_type)
-    exp_fd.write ("# PORT %d\n\n" % gfs_port)
-
-    exp_fd.write ("volume posix\n")
-    exp_fd.write ("  type storage/posix\n")
-    exp_fd.write ("  option directory %s\n" % export_dir)
-    exp_fd.write ("end-volume\n\n")
-
-    exp_fd.write ("volume locks\n")
-    exp_fd.write ("    type features/locks\n")
-    exp_fd.write ("    subvolumes posix\n")
-    exp_fd.write ("end-volume\n\n")
-
-    exp_fd.write ("volume brick\n")
-    exp_fd.write ("    type performance/io-threads\n")
-    exp_fd.write ("    option thread-count 8\n")
-    exp_fd.write ("    subvolumes locks\n")
-    exp_fd.write ("end-volume\n\n")
-
-    exp_fd.write ("volume server\n")
-    exp_fd.write ("    type protocol/server\n")
-    exp_fd.write ("    option transport-type %s\n" % transport_type)
-    exp_fd.write ("    option auth.addr.brick.allow *\n")
-    exp_fd.write ("    option listen-port %d\n" % gfs_port)
-    exp_fd.write ("    subvolumes brick\n")
-    exp_fd.write ("end-volume\n\n")
-
-    return
-
-def upgrade_mount_volume (volume_path, new_servers):
-
-    global transport_type
-    global gfs_port
-    global raid_type
-
-    try:
-        tmp_read_fd = file (volume_path, "r")
-    except IOError, (errno, strerror):
-        print_error ("open of %s failed: %s" % (volume_path, strerror))
-        sys.exit (1)
-
-    volume_file_buf = tmp_read_fd.readlines ()
-    volume_file_buf = map (string.strip, volume_file_buf)
-
-    old_servers = []
-    for line in volume_file_buf:
-        if line[0:6] == "# RAID":
-            raid_type = int (line[7:])
-
-        volume_name = ""
-        if line[0:6] == "volume":
-            volume_name = line[7:]
-            if (volume_name == "stripe-0" or volume_name == "mirror-0" or volume_name == "distribute"):
-                break
-            old_servers.append (volume_name)
-
-        if (len (line) > 22 and line[7:21] == "transport-type"):
-            transport_type = line[22:]
-
-        if (len (line) > 20 and line[7:18] == "remote-port"):
-            gfs_port = int (line[19:])
-
-
-    servers = old_servers + new_servers
-
-    # Make sure 'server list is uniq'
-    tmp_servers = []
-    for server in servers:
-        if server in tmp_servers:
-            print_error ("duplicate entry in server list (%s)." % server)
-            sys.exit (1)
-        tmp_servers.append (server);
-
-    try:
-        tmp_fd = file (volume_path, "w")
-    except IOError, (errno, strerror):
-        print_error ("open of %s failed: %s" % (volume_path, strerror))
-        sys.exit (1)
-
-    print_mount_volume (tmp_fd, servers)
-    print "Wrote new mount file %s" % volume_path
-    return
-
-
-def main ():
-
-    global transport_type
-    global gfs_port
-    global raid_type
-    global num_replica
-    global num_stripe
-
-    main_name = None
-
-    needs_upgrade = None
-    version_num ="0.1.3"
-    volume_name = None
-    export_dir = None
-
-    if len(sys.argv) == 1:
-        print_usage (sys.argv[0])
-        sys.exit (1)
-
-    # TODO: take this variable from --prefix option.
-    confdir = "/usr/local/etc/glusterfs"
-
-    #rport = $(($(ls ${confdir}/glusterfs/ | sort | head -n 1 | cut -f 1 -d -) - 10));
-    #cache_size = "$(free | grep 'Mem:' | awk '{print $2 * .40}')KB"; # 40% of available memory
-
-    export_volume_path="/dev/stdout"
-    mount_volume_path="/dev/stdout"
-
-    try:
-        (opt, args) = getopt.getopt (sys.argv[1:], "r:t:c:p:d:n:o:v:uh",
-                                     ["raid=",
-                                      "transport=",
-                                      "cache-size=",
-                                      "port=",
-                                      "export-directory=",
-                                      "num-stripe=",
-                                      "num-replica=",
-                                      "name=",
-                                      "conf-dir=",
-                                      "upgrade",
-                                      "usage",
-                                      "version",
-                                      "help"])
-
-    except getopt.GetoptError, (msg, opt):
-        print msg
-        sys.exit (1)
-
-    for (o, val) in opt:
-        if o == '--usage' or o == '--help':
-            print_usage (sys.argv[0])
-            sys.exit (0)
-
-        if o == '--upgrade':
-            needs_upgrade = 1
-
-        if o == '--num-stripe':
-            num_stripe = int (val)
-
-        if o == '--num-replica':
-            num_replica = int (val)
-
-        if o == '-n' or o == '--name':
-            main_name = val
-
-        if o == '-o' or o == '--conf-dir':
-            print val
-            confdir = val
-
-        if o == '-d' or o == '--export-directory':
-            export_dir = val
-
-        if o == '-p' or o == '--port':
-            gfs_port = int (val)
-
-        if o == '-c' or o == '--cache-size':
-            cache_size = val
-
-        if o == '-r' or o == '--raid':
-            if (val != "1" and val != "0" and val != "10"):
-                print_error ("--raid: '" + val + "' is not a valid RAID type.")
-                print_usage (sys.argv[0])
-                sys.exit (1)
-            raid_type = int (val)
-
-        if o == '-t' or o == '--transport':
-            if (val != "tcp" and val != "ib-verbs"):
-                print_error ("--transport: '" + val + "' is not a valid transport type.")
-                print_usage (sys.argv[0])
-                sys.exit (1)
-            transport_type = val
-
-        if o == '-v' or o == '--version':
-            print_version (version_num)
-            sys.exit (0)
-
-    if main_name is None:
-        print_error ("'--name' not specified.")
-        print_usage (sys.argv[0])
-        sys.exit (1)
-
-    setup_env()
-    export_volume_path = "%s/%s-export.vol" % (confdir, main_name)
-    mount_volume_path  = "%s/%s-mount.vol" % (confdir, main_name)
-
-    num_servers = len (args)
-
-    if num_servers is 0:
-        print_error ("no servers specified.")
-        print_usage (sys.argv[0])
-        sys.exit (1)
-
-    if needs_upgrade is 1:
-        upgrade_mount_volume (mount_volume_path, args)
-        sys.exit (0)
-
-    if export_dir is None:
-        print_error ("'--export-directory' not specified.")
-        sys.exit (1)
-
-    try:
-        exp_fd = file (export_volume_path, "w")
-    except IOError, (errno, strerror):
-        print_error ("open of %s failed: %s" % (export_volume_path, strerror))
-        sys.exit (1)
-
-    try:
-        mount_fd = file (mount_volume_path, "w")
-    except IOError, (errno, strerror):
-        print_error ("open of %s failed: %s" % (mount_volume_path, strerror))
-        sys.exit (1)
-
-    print_export_volume (exp_fd, export_dir)
-    print "Wrote export file %s" % export_volume_path
-    print_mount_volume (mount_fd, args)
-    print "Wrote mount file %s" % mount_volume_path
-    return
-
-main ()
diff --git a/extras/volgen/CreateBooster.py b/extras/volgen/CreateBooster.py
new file mode 100644
index 000000000..9051f4401
--- /dev/null
+++ b/extras/volgen/CreateBooster.py
@@ -0,0 +1,56 @@
+GLUSTERFS_BOOSTER_FSTAB = "/etc/gluster/booster.fstab"
+GLUSTERFS_UNFS3_EXPORTS = "/etc/gluster/boosterexports"
+GLUSTERFS_CIFS_CONFIG = "/etc/gluster/boostersmb.conf"
+LOGDIR = "/var/log/glusterfs"
+CONFDIR = "/etc/gluster"
+fstype = "glusterfs"
+
+class CreateBooster:
+
+    def __init__ (self, main_name, export_dir):
+
+        self.volume_name = main_name
+        self.export = export_dir
+
+    def configure_booster_fstab (self):
+        if self.volume_name is None or self.export is None:
+            sys.exit(1)
+
+        booster_fstab_fd = file (GLUSTERFS_BOOSTER_FSTAB, "a")
+        _fstab = "%s/%s.vol  %s" % (CONFDIR, self.volume_name, self.export)
+        _options = "%s subvolume=io-cache" % fstype
+        _options_log = "logfile=%s/%s.log" % (LOGDIR, self.volume_name)
+        _options_ext = "loglevel=ERROR,attr_timeout=0"
+        booster_fstab_fd.write ("%s %s,%s,%s\n" %
+                                (_fstab,
+                                 _options,
+                                 _options_log,
+                                 _options_ext))
+
+        return
+
+    def configure_nfs_booster (self):
+        if self.volume_name is None or self.export is None:
+            sys.exit(1)
+
+        nfs_exports_fd = file (GLUSTERFS_UNFS3_EXPORTS, "a")
+        nfs_exports_fd.write ("%s  0.0.0.0/0(rw,no_root_squash)\n" %
+                              self.export)
+        return
+
+    def configure_cifs_booster (self):
+
+        if self.volume_name is None or self.export is None:
+            sys.exit(1)
+
+        cifs_config_fd = file (GLUSTERFS_CIFS_CONFIG, "a")
+        cifs_config_fd.write ("[%s]\n" % self.volume_name)
+        cifs_config_fd.write ("comment = %s volume served by Gluster\n" %
+                              self.volume_name)
+        cifs_config_fd.write ("path = %s\n" % self.export)
+        cifs_config_fd.write ("guest ok = yes\n")
+        cifs_config_fd.write ("public = yes\n")
+        cifs_config_fd.write ("writable = yes\n")
+        cifs_config_fd.write ("admin users = gluster\n")
+        cifs_config_fd.close()
+        return
diff --git a/extras/volgen/CreateVolfile.py b/extras/volgen/CreateVolfile.py
new file mode 100644
index 000000000..1d22e8fb1
--- /dev/null
+++ b/extras/volgen/CreateVolfile.py
@@ -0,0 +1,238 @@
+import os, sys, string
+import subprocess
+
+num_replica = 2
+num_stripe = 4
+cache_size = "1GB"
+
+class CreateVolfile:
+
+    def __init__ (self, servers, server, volume_name,
+                  transport, transports, port, auth_param,
+                  ib_port, confdir, args):
+        self.hosts = servers
+        self.host = server
+        self.volume_name = volume_name
+        self.transport = transport
+        self.transports = transports
+        self.gfs_port = port
+        self.gfs_ib_port = port + 1
+        self.auth_parameters = auth_param
+        self.ib_devport = ib_port
+        self.num_servers = len (self.hosts.keys())
+        self.conf_dir = confdir
+        self.arguments = args
+
+    def create_mount_volfile (self, raid_type):
+
+
+        if self.conf_dir:
+            mount_fd = file ("%s/%s-%s.vol" % (self.conf_dir,
+                                               str(self.volume_name),
+                                               str(self.transport)), "w")
+        else:
+            mount_fd = file ("%s-%s.vol" % (str(self.volume_name),
+                                            str(self.transport)), "w")
+
+        print "Generating client volfiles.. for transport '%s'" % (self.transport)
+
+        num_stripe = 4
+        num_replica = 2
+
+
+        cmdline = string.join (sys.argv, ' ')
+        mount_fd.write ("## file auto generated by %s (mount.vol)\n" %
+                        sys.argv[0])
+        mount_fd.write ("# Cmd line:\n")
+        mount_fd.write ("# $ %s\n\n" % cmdline)
+
+        if raid_type is not None:
+            # Used for later usage
+            mount_fd.write ("# RAID %d\n" % raid_type)
+
+        mount_fd.write ("# TRANSPORT-TYPE %s\n" % self.transport)
+        subvolumes = []
+        for host in self.hosts.keys():
+            i = 1
+            for exports in self.hosts[host]:
+                mount_fd.write ("volume %s-%s\n" % (host,i))
+                mount_fd.write ("    type protocol/client\n")
+                mount_fd.write ("    option transport-type %s\n" %
+                                self.transport)
+                command = "dig %s | grep '^%s'" % (host, host)
+                ps = subprocess.Popen(command,
+                                      shell=True,
+                                      stdout=subprocess.PIPE,
+                                      stdin=subprocess.PIPE,
+                                      stderr=subprocess.PIPE,
+                                      close_fds=True)
+                ipaddress = host
+                if ps.wait() == 0:
+                    output = ps.communicate()
+                    ipaddress = output[0].split()[-1]
+
+                mount_fd.write ("    option remote-host %s\n" % ipaddress)
+                if self.transport == 'ib-verbs':
+                    mount_fd.write ("    option transport.ib-verbs.port %d\n" %
+                                    self.ib_devport)
+                    mount_fd.write ("    option transport.remote-port %d\n" %
+                                    self.gfs_ib_port)
+                if self.transport == 'tcp':
+                    mount_fd.write ("    option transport.socket.nodelay on\n")
+                    mount_fd.write ("    option transport.remote-port %d\n" %
+                                    self.gfs_port)
+
+                mount_fd.write ("    option remote-subvolume brick%s\n" %
+                                i)
+                mount_fd.write ("end-volume\n\n")
+                i += 1
+
+        exportlist = {}
+        for entry in self.arguments:
+            node = entry.split(':')[0]
+            if not exportlist.has_key(node):
+                exportlist[node] = 1
+            else:
+                exportlist[node] += 1
+            subvolumes.append(str(node) + '-' + str(exportlist[node]))
+
+
+        if raid_type == 1:
+            if (len(subvolumes) % num_replica) != 0:
+                print "raid type (%d) and number of volumes (%d) invalid" % (raid_type, len(subvolumes))
+                sys.exit (1)
+
+        if raid_type == 0:
+            if (len(subvolumes) % num_stripe) != 0:
+                print "raid type (%d) and number of volumes (%d) invalid" % (raid_type, len(subvolumes))
+                sys.exit (1)
+
+        # Stripe section.. if given
+        if raid_type is 0:
+            max_stripe_idx = len (subvolumes) / num_stripe
+            stripe_idx = 0
+            index = 0
+            while index < max_stripe_idx:
+                mount_fd.write ("volume stripe-%d\n" % index)
+                mount_fd.write ("    type cluster/stripe\n")
+                mount_fd.write ("    subvolumes %s %s %s %s\n" %
+                                (subvolumes[stripe_idx],
+                                 subvolumes[stripe_idx+1],
+                                 subvolumes[stripe_idx+2],
+                                 subvolumes[stripe_idx+3]))
+                mount_fd.write ("end-volume\n\n")
+                stripe_idx += 4
+                index +=1
+
+        # Replicate section
+        if raid_type is 1:
+            max_mirror_idx = len (subvolumes) / num_replica
+            mirror_idx = 0
+            index = 0
+            while index < max_mirror_idx:
+                mount_fd.write ("volume mirror-%d\n" % index)
+                mount_fd.write ("    type cluster/replicate\n")
+                mount_fd.write ("    subvolumes %s %s\n" %
+                                (subvolumes[mirror_idx],
+                                 subvolumes[mirror_idx+1]))
+                mount_fd.write ("end-volume\n\n")
+                mirror_idx += 2
+                index += 1
+
+        # Distribute section
+        if raid_type is 0:
+            subvolumes = []
+            flag = 0
+            while flag < index:
+                subvolumes.append ("stripe-%d" % flag)
+                flag += 1
+        if raid_type is 1:
+            subvolumes = []
+            flag = 0
+            while flag < index:
+                subvolumes.append ("mirror-%d" % flag)
+                flag += 1
+
+        if len (subvolumes) > 1:
+            mount_fd.write ("volume distribute\n")
+            mount_fd.write ("    type cluster/distribute\n")
+            mount_fd.write ("    subvolumes %s\n" %
+                                 string.join (subvolumes,' '))
+            mount_fd.write ("end-volume\n\n")
+            subvolumes[0] = "distribute"
+
+        mount_fd.write ("volume writebehind\n")
+        mount_fd.write ("    type performance/write-behind\n")
+        mount_fd.write ("    option cache-size 4MB\n")
+        mount_fd.write ("    subvolumes %s\n" % subvolumes[0])
+        mount_fd.write ("end-volume\n\n")
+
+        mount_fd.write ("volume io-cache\n")
+        mount_fd.write ("    type performance/io-cache\n")
+        mount_fd.write ("    option cache-size %s\n" % cache_size)
+        mount_fd.write ("    subvolumes writebehind\n")
+        mount_fd.write ("end-volume\n\n")
+
+        return
+
+    def create_export_volfile (self):
+
+        cmdline = string.join (sys.argv, ' ')
+
+        if self.conf_dir:
+            exp_fd = file ("%s/%s-export.vol" %
+                           (self.conf_dir,
+                            str(self.host + '-' + self.volume_name)),"w")
+        else:
+            exp_fd = file ("%s-export.vol" %
+                           (str(self.host + '-' + self.volume_name)),"w")
+
+        print "Generating server volfiles.. for server '%s'" % (self.host)
+
+        exp_fd.write ("## file auto generated by %s (export.vol)\n" %
+                      sys.argv[0])
+        exp_fd.write ("# Cmd line:\n")
+        exp_fd.write ("# $ %s\n\n" % cmdline)
+        total_bricks = []
+        i=1
+        for export in self.hosts[self.host]:
+            exp_fd.write ("volume posix%d\n" % i)
+            exp_fd.write ("  type storage/posix\n")
+            exp_fd.write ("  option directory %s\n" % export)
+            exp_fd.write ("end-volume\n\n")
+
+            exp_fd.write ("volume locks%d\n" % i)
+            exp_fd.write ("    type features/locks\n")
+            exp_fd.write ("    subvolumes posix%d\n" % i)
+            exp_fd.write ("end-volume\n\n")
+
+            exp_fd.write ("volume brick%d\n" % i)
+            exp_fd.write ("    type performance/io-threads\n")
+            exp_fd.write ("    option thread-count 8\n")
+            exp_fd.write ("    subvolumes locks%d\n" % i)
+            exp_fd.write ("end-volume\n\n")
+
+            total_bricks.append("brick%s" % i)
+            i += 1
+
+        for transport in self.transports:
+            exp_fd.write ("volume server-%s\n" % transport)
+            exp_fd.write ("    type protocol/server\n")
+            exp_fd.write ("    option transport-type %s\n" % transport)
+            for brick in total_bricks:
+                exp_fd.write ("    option auth.addr.%s.allow %s\n" %
+                              (brick, self.auth_parameters))
+
+            if transport == 'ib-verbs':
+                exp_fd.write ("    option transport.ib-verbs.listen-port %d\n" % self.gfs_ib_port)
+                exp_fd.write ("    option transport.ib-verbs.port %d\n" %
+                              self.ib_devport)
+            if transport == 'tcp':
+                exp_fd.write ("    option transport.socket.listen-port %d\n" % self.gfs_port)
+                exp_fd.write ("    option transport.socket.nodelay on\n")
+
+            exp_fd.write ("    subvolumes %s\n" %
+                          string.join(total_bricks, ' '))
+            exp_fd.write ("end-volume\n\n")
+
+        return
diff --git a/extras/volgen/Makefile.am b/extras/volgen/Makefile.am
new file mode 100644
index 000000000..73b62356e
--- /dev/null
+++ b/extras/volgen/Makefile.am
@@ -0,0 +1,8 @@
+
+volgendir = $(datadir)/glusterfs
+dist_volgen_DATA = CreateVolfile.py CreateBooster.py
+
+dist_bin_SCRIPTS = glusterfs-volgen
+
+CLEANFILES = 
+
diff --git a/extras/volgen/glusterfs-volgen b/extras/volgen/glusterfs-volgen
new file mode 100755
index 000000000..1151053ac
--- /dev/null
+++ b/extras/volgen/glusterfs-volgen
@@ -0,0 +1,184 @@
+#!/usr/bin/python
+
+import getopt, sys, os, string
+import subprocess
+
+if not "/usr/share/glusterfs" in sys.path:
+    sys.path.append("/usr/share/glusterfs")
+
+from CreateVolfile import *
+from CreateBooster import *
+
+def print_usage (name):
+    spaces = ' ' * (len(name) + 1)
+    print name, "--name <volume-name>"
+    print "%s[--raid 0|1]" % spaces
+    print "%s[--transport tcp,ib-verbs]" % spaces
+    print "%s[--port <port>]" % spaces
+    print "%s[--ibdev <lid>]" % spaces
+    print "%s[--auth <ip-range>]" % spaces
+    print "%s[--conf-dir <confdir>]" % spaces
+    print "%s[--usage]" % spaces
+    print "%s[--nfs]" % spaces
+    print "%s[--cifs]" % spaces
+    print "%s[--version]" % spaces
+    print "%shost1:<export> host2:<export> ... hostN:<exportNN>" % spaces
+    return
+
+def print_version (version):
+    print "glusterfs-volgen %s: A tool to generate volume files for GlusterFS." % version
+    print "Copyright (C) 2009 Gluster, Inc. <http://www.gluster.com>"
+    print """License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law."""
+
+
+def main ():
+
+    needs_upgrade = None
+    needs_nfs = None
+    needs_cifs = None
+    version_num ="3.0"
+    _volume_name = None
+    _server_chain = {}
+    _server = None
+    _transports = ['tcp']
+    _transport = None
+    _port = 6996
+    _auth_param = "*"
+    _ib_dev = 1
+    _raid_type = None
+    node = None
+    _conf_dir = None
+
+    try:
+        (opt, args) = getopt.getopt (sys.argv[1:], "r:t:p:n:a:i:ch",
+                                     ["raid=",
+                                      "transport=",
+                                      "port=",
+                                      "name=",
+                                      "auth=",
+                                      "ibdev=",
+                                      "conf-dir=",
+                                      "nfs",
+                                      "cifs",
+                                      "usage",
+                                      "version",
+                                      "help"])
+
+    except getopt.GetoptError, (msg, opt):
+        print msg
+        sys.exit (1)
+
+    for (o, val) in opt:
+        if o == '--usage' or o == '--help':
+            print_usage (sys.argv[0])
+            sys.exit (0)
+
+        if o == '-n' or o == '--name':
+            _volume_name = val
+
+        if o == '--nfs':
+            needs_nfs = 1
+
+        if o == '--cifs':
+            needs_cifs = 1
+
+        if o == '-t' or o == '--transport':
+            if not val:
+                print "--transport: option " + val + \
+                    " is not valid transport type"
+                sys.exit (1)
+            _transports = val.split(',')
+
+        if o == '-a' or o == '--auth':
+            _auth_param = val
+
+        if o == '-p' or o == '--port':
+            _port = int(val)
+
+        if o == '-r' or o == '--raid':
+            if (val != "1" and val != "0"):
+                print "--raid: option " + val + " is not valid raid type"
+                sys.exit (1)
+            _raid_type = int (val)
+
+        if o == '-i' or o == '--ibdev':
+            _ib_dev = int(val)
+
+        if o == '-v' or o == '--version':
+            print_version (version_num)
+            sys.exit (0)
+
+        if o == '-c' or o == '--conf-dir':
+            _conf_dir = val
+
+    if _volume_name is None:
+        print "Volume name is mandatory, please provide volume name.. exiting"
+        print_usage(sys.argv[0])
+        sys.exit(1)
+
+    _tmp = []
+    for server in args:
+        if server not in _tmp:
+            _tmp.append (server)
+        else:
+            print "Duplicate arguments detected (%s)" % server
+            sys.exit(1)
+
+        node = server.split(':')[0]
+        _server_chain[node] = []
+
+    for server in args:
+        node = server.split(':')[0]
+        if server.split(':')[1] not in _server_chain [node]:
+            if server.split(':')[1][0] != '/':
+                print "Absolute export path required for %s" % server
+                sys.exit(1)
+            _server_chain [node].append (server.split(':')[1])
+
+    num_servers = len (_server_chain.keys())
+
+    if num_servers is 0:
+        print "no servers provided, exiting"
+        print_usage(sys.argv[0])
+        sys.exit (1)
+
+    print num_servers
+
+
+    for _server in _server_chain.keys():
+        create_exp = CreateVolfile (_server_chain, _server,
+                                    _volume_name, None,
+                                    _transports, _port,
+                                    _auth_param, _ib_dev,
+                                    _conf_dir, None)
+        try:
+            create_exp.create_export_volfile ()
+        except IOError, (errno, strerror):
+            print "Got %s creating server volfiles for %s" % (strerror, _server)
+
+    for _transport in _transports:
+        create_mnt = CreateVolfile (_server_chain, None,
+                                    _volume_name, _transport,
+                                    _transports, _port,
+                                    _auth_param, _ib_dev,
+                                    _conf_dir, args)
+        try:
+            create_mnt.create_mount_volfile (_raid_type)
+        except IOError, (errno, strerror):
+            print "Got %s creating client volfiles for transport '%s'" % (strerror, _transport)
+
+
+    for _server in _server_chain.keys():
+        for export_dir in _server_chain[_server]:
+            commonobj = CreateBooster (_volume_name, export_dir)
+            if needs_nfs is 1 or needs_cifs is 1:
+                commonobj.configure_booster_fstab ()
+            if needs_nfs is 1:
+                commonobj.configure_nfs_booster ()
+            if needs_cifs is 1:
+                commonobj.configure_cifs_booster ()
+    return
+
+main ()