- initial version

diff --git a/lustre/utils/lmc b/lustre/utils/lmc
new file mode 100755 (executable)
index 0000000..c68652d
--- /dev/null
+++ b/lustre/utils/lmc
@@ -0,0 +1,211 @@
+#!/usr/bin/env python
+
+import sys, getopt
+import xml.dom.minidom
+
+#
+# Example of walking the tree
+#
+def handleLustre(lustre):
+    handleHost(lustre.getElementsByTagName("node"))
+
+def handleHost(hosts):
+    for host in hosts:
+        name = host.getAttribute("name")
+        uuid = host.getAttribute("uuid")
+
+#
+# manage names and uuids
+# need to initialize this by walking tree to ensure
+# no duplicate names or uuids are created.
+# this are just place holders for now.
+name_ctr = 1
+def new_name(base):
+    global name_ctr
+    name = "%s_%d" % (base, name_ctr)
+    name_ctr += 1
+    return name
+
+def get_uuid(name):
+    return "%s_UUID" % (name)
+
+#
+# Create a new empty lustre document 
+def new_Lustre():
+    str = """<lustre>
+</lustre>"""
+    dom = xml.dom.minidom.parseString(str)
+    return dom
+
+#
+# Create a new object the "correct" way by using the DOM api.
+#
+def new_OBD(dom, name, fs, devname, format, dev_size=0, dev_file=""):
+    uuid = get_uuid(name)
+    
+    obd = dom.createElement("obd")
+    obd.setAttribute("name", name)
+    obd.setAttribute("uuid", uuid)
+
+    fstype = dom.createElement("fstype")
+    txt= dom.createTextNode(fs)
+    fstype.appendChild(txt)
+    obd.appendChild(fstype)
+    
+    dev = dom.createElement("device")
+    if (dev_size):
+        dev.setAttribute("size", "%s" % (dev_size))
+    txt = dom.createTextNode(devname)
+    dev.appendChild(txt)
+    obd.appendChild(dev)
+
+    fmt = dom.createElement("autoformat")
+    txt = dom.createTextNode(format)
+    fmt.appendChild(txt)
+    obd.appendChild(fmt)
+
+    return obd
+
+#
+# Create new object the fast and easy way
+# (note: dom is not needed for this way)
+def new_OSC(dom, osc, obd):
+    osc_uuid = get_uuid(osc)
+    obd_uuid = get_uuid(obd)
+
+    osc_str ="""
+<osc name="%s" uuid="%s">
+   <service_id num="1" name="%s" uuid="%s"/>
+</osc> """ % (osc, osc_uuid, obd, obd_uuid)
+    osc = xml.dom.minidom.parseString(osc_str)
+    return osc.getElementsByTagName("osc")[0]
+
+#
+# Create new object the fast and easy way
+#
+def new_OST(dom, ost, host, port, obd):
+    ost_uuid = get_uuid(ost)
+    obd_uuid = get_uuid(obd)
+
+    str ="""
+<ost name="%s" uuid="%s">
+   <network type="tcp">
+      <server>%s</server>
+      <port>%d</port>
+   </network>
+   <server_id num="1" name="%s" uuid="%s"/>
+</ost> """ % (ost, ost_uuid, host, port, obd, obd_uuid)
+    node = xml.dom.minidom.parseString(str)
+    return node.getElementsByTagName("ost")[0]
+
+#
+# Create a new obd, osc, and ost. Add them to the DOM.
+#
+def add_OST(dom, options, args):
+    # XXX need some error checking
+    devname = args[0]
+    host = args[1]
+
+    obdname = new_name("obd")
+    oscname = new_name("osc")
+    ostname = new_name("ost")
+    
+    obd = new_OBD(dom, obdname, "extN", devname, "no")
+    osc = new_OSC(dom, oscname, obdname)
+    ost = new_OST(dom, ostname, host, 2020, obdname)
+    
+    dom.getElementsByTagName("lustre")[0].appendChild(obd)
+    dom.getElementsByTagName("lustre")[0].appendChild(osc)
+    dom.getElementsByTagName("lustre")[0].appendChild(ost)
+
+
+#
+# Command line processing
+#
+def usage():
+    print """usage: lmc [--ost | --mtpt | --lov] cmd args
+Commands:
+--ost "device" "host"
+   Creates an OBD/OST/OSC configuration triplet for a new device.
+   When used on "host", the device will be initialized and the OST
+   will be enabled. On client nodes, the OSC will be avaiable.
+
+--mtpt "mds" "ost/lov-name" /mnt/point
+   Creates a client mount point.
+
+--lov "mds" "lov name < "all-ost.xml"
+   Produces a logical volum striped over the OSTs found in all-ost.xml.
+   (Not sure how all-ost.xml is created, exactly.)
+
+Options:
+--merge="xml file"  Add the new objects to an existing file
+--format            Format the partitions if unformated
+--reformat          Reformat partitions (this should be an lconf arg,
+                    I think)
+(SCRIPT STILL UNDER DEVELOPMENT, MOST COMMANDS/OPTIONS UNIMPLEMENTED)
+"""
+
+def cmdline(argv):
+    short_opts = "ho:"
+    long_opts = ["ost", "mtpt", "lov",
+                 "merge=", "format", "reformat", "output=",
+                 "help"]
+    opts = []
+    args = []
+    options = {}
+    try:
+        opts, args = getopt.getopt(argv, short_opts, long_opts)
+    except getopt.GetoptError:
+        print "invalid opt"
+        usage()
+        sys.exit(2)
+
+    for o, a in opts:
+        if o in ("-h", "--help"):
+            usage()
+            sys.exit()
+        if o in ("-o", "--output"):
+            options['output'] = a
+        if o == "--ost":
+            options['ost'] = 1
+        if o == "--merge":
+            options['merge'] = a
+        if o == "--format":
+            options['format'] = 1
+        if o  == "--reformat":
+            options['reformat'] = 1
+            
+    return options, args
+
+def main():
+    options, args = cmdline(sys.argv[1:])
+
+    if options.has_key('merge'):
+        outFile = options['merge']
+        dom = xml.dom.minidom.parse(outFile)
+    else:
+        if options.has_key('output'):
+            outFile = options['output']
+        else:
+            outFile = '-'
+        dom = new_Lustre()
+
+    if options.has_key('ost'):
+        add_OST(dom, options, args)
+    elif options.has_key('mtpt'):
+        print "--mtpt not implemented"
+    elif options.has_key('lov'):
+        print "--mtpt not implemented"
+    else:
+        print "Missing command"
+        usage()
+        sys.exit(1)
+        
+
+    if outFile == '-':
+        print dom.toxml()
+    else:
+        dom.writexml(open(outFile,"w"))
+    
+if __name__ == "__main__":
+    main()