summaryrefslogtreecommitdiffstats
path: root/extras/glusterfs-volgen
blob: 5dcb9e3cea52978a16108b73157193a88d1a16f5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
#!/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 ()