1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/liblustre/llite_lib.c
38 * Lustre Light common routines
45 #include <sys/types.h>
47 #include <sys/queue.h>
60 #include <liblustre.h>
61 #include <lnet/lnetctl.h> /* needed for parse_dump */
64 #include "llite_lib.h"
66 int slp_global_init(void);
68 static int lllib_init(void)
70 if (liblustre_init_current("liblustre") ||
82 return _sysio_fssw_register("lustre", &llu_fssw_ops);
85 int liblustre_process_log(struct config_llog_instance *cfg,
86 char *mgsnid, char *profile,
89 struct lustre_cfg_bufs bufs;
90 struct lustre_cfg *lcfg;
91 char *peer = "MGS_UUID";
92 struct obd_device *obd;
93 struct obd_export *exp;
94 char *name = "mgc_dev";
96 struct obd_uuid mgc_uuid;
97 struct llog_ctxt *ctxt;
101 struct obd_connect_data *ocd = NULL;
104 ll_generate_random_uuid(uuid);
105 class_uuid_unparse(uuid, &mgc_uuid);
107 nid = libcfs_str2nid(mgsnid);
108 if (nid == LNET_NID_ANY) {
109 CERROR("Can't parse NID %s\n", mgsnid);
113 lustre_cfg_bufs_reset(&bufs, NULL);
114 lustre_cfg_bufs_set_string(&bufs, 1, peer);
115 lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
116 lcfg->lcfg_nid = nid;
117 rc = class_process_config(lcfg);
118 lustre_cfg_free(lcfg);
122 lustre_cfg_bufs_reset(&bufs, name);
123 lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_MGC_NAME);
124 lustre_cfg_bufs_set_string(&bufs, 2, mgc_uuid.uuid);
125 lcfg = lustre_cfg_new(LCFG_ATTACH, &bufs);
126 rc = class_process_config(lcfg);
127 lustre_cfg_free(lcfg);
129 GOTO(out_del_uuid, rc);
131 lustre_cfg_bufs_reset(&bufs, name);
132 lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_MGS_OBDNAME);
133 lustre_cfg_bufs_set_string(&bufs, 2, peer);
134 lcfg = lustre_cfg_new(LCFG_SETUP, &bufs);
135 rc = class_process_config(lcfg);
136 lustre_cfg_free(lcfg);
138 GOTO(out_detach, rc);
140 while ((mdsnid = strsep(&mgsnid, ","))) {
141 nid = libcfs_str2nid(mdsnid);
142 lustre_cfg_bufs_reset(&bufs, NULL);
143 lustre_cfg_bufs_set_string(&bufs, 1, libcfs_nid2str(nid));
144 lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
145 lcfg->lcfg_nid = nid;
146 rc = class_process_config(lcfg);
147 lustre_cfg_free(lcfg);
149 CERROR("Add uuid for %s failed %d\n",
150 libcfs_nid2str(nid), rc);
154 lustre_cfg_bufs_reset(&bufs, name);
155 lustre_cfg_bufs_set_string(&bufs, 1, libcfs_nid2str(nid));
156 lcfg = lustre_cfg_new(LCFG_ADD_CONN, &bufs);
157 lcfg->lcfg_nid = nid;
158 rc = class_process_config(lcfg);
159 lustre_cfg_free(lcfg);
161 CERROR("Add conn for %s failed %d\n",
162 libcfs_nid2str(nid), rc);
167 obd = class_name2obd(name);
169 GOTO(out_cleanup, rc = -EINVAL);
171 OBD_ALLOC(ocd, sizeof(*ocd));
173 GOTO(out_cleanup, rc = -ENOMEM);
175 ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_FID |
176 OBD_CONNECT_AT | OBD_CONNECT_VBR;
177 #ifdef LIBLUSTRE_POSIX_ACL
178 ocd->ocd_connect_flags |= OBD_CONNECT_ACL;
180 ocd->ocd_version = LUSTRE_VERSION_CODE;
182 rc = obd_connect(NULL, &exp, obd, &mgc_uuid, ocd, NULL);
184 CERROR("cannot connect to %s at %s: rc = %d\n",
185 LUSTRE_MGS_OBDNAME, mgsnid, rc);
186 GOTO(out_cleanup, rc);
189 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
190 cfg->cfg_flags |= CFG_F_COMPAT146;
191 rc = class_config_parse_llog(ctxt, profile, cfg);
194 CERROR("class_config_parse_llog failed: rc = %d\n", rc);
197 /* We don't so much care about errors in cleaning up the config llog
198 * connection, as we have already read the config by this point. */
199 err = obd_disconnect(exp);
201 CERROR("obd_disconnect failed: rc = %d\n", err);
205 OBD_FREE(ocd, sizeof(*ocd));
207 lustre_cfg_bufs_reset(&bufs, name);
208 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
209 err = class_process_config(lcfg);
210 lustre_cfg_free(lcfg);
212 CERROR("md_cleanup failed: rc = %d\n", err);
215 lustre_cfg_bufs_reset(&bufs, name);
216 lcfg = lustre_cfg_new(LCFG_DETACH, &bufs);
217 err = class_process_config(lcfg);
218 lustre_cfg_free(lcfg);
220 CERROR("md_detach failed: rc = %d\n", err);
223 lustre_cfg_bufs_reset(&bufs, name);
224 lustre_cfg_bufs_set_string(&bufs, 1, peer);
225 lcfg = lustre_cfg_new(LCFG_DEL_UUID, &bufs);
226 err = class_process_config(lcfg);
228 CERROR("del MDC UUID failed: rc = %d\n", err);
229 lustre_cfg_free(lcfg);
235 /* parse host:/fsname string */
236 int ll_parse_mount_target(const char *target, char **mgsnid,
239 static char buf[256];
243 strncpy(buf, target, 255);
245 if ((s = strchr(buf, ':'))) {
251 sprintf(s + strlen(s), "-client");
261 * early liblustre init
262 * called from C startup in catamount apps, before main()
264 * The following is a skeleton sysio startup sequence,
265 * as implemented in C startup (skipping error handling).
266 * In this framework none of these calls need be made here
267 * or in the apps themselves. The NAMESPACE_STRING specifying
268 * the initial set of fs ops (creates, mounts, etc.) is passed
269 * as an environment variable.
272 * _sysio_incore_init();
273 * _sysio_native_init();
274 * _sysio_lustre_init();
275 * _sysio_boot(NAMESPACE_STRING);
277 * the name _sysio_lustre_init() follows the naming convention
278 * established in other fs drivers from libsysio:
279 * _sysio_incore_init(), _sysio_native_init()
281 * _sysio_lustre_init() must be called before _sysio_boot()
282 * to enable libsysio's processing of namespace init strings containing
283 * lustre filesystem operations
285 int _sysio_lustre_init(void)
290 extern void __liblustre_cleanup_(void);
293 liblustre_init_random();
297 perror("init llite driver");
301 envstr = getenv("LIBLUSTRE_TIMEOUT");
302 if (envstr != NULL) {
303 obd_timeout = (unsigned int)strtol(envstr, NULL, 0);
304 printf("LibLustre: obd timeout=%u seconds\n",
308 /* debug peer on timeout? */
309 envstr = getenv("LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT");
310 if (envstr != NULL) {
311 obd_debug_peer_on_timeout =
312 (unsigned int)strtol(envstr, NULL, 0);
313 printf("LibLustre: debug peer on timeout=%d\n",
314 obd_debug_peer_on_timeout ? 0 : 1);
318 (void)atexit(__liblustre_cleanup_);
323 extern int _sysio_native_init();
325 static int mnt_retry = 0;
327 char *lustre_path = NULL;
329 void __liblustre_setup_(void)
332 char *lustre_driver = "lustre";
333 unsigned mntflgs = 0;
336 lustre_path = getenv("LIBLUSTRE_MOUNT_POINT");
338 lustre_path = "/mnt/lustre";
341 target = getenv("LIBLUSTRE_MOUNT_RETRY");
343 mnt_retry = atoi(target);
349 target = getenv("LIBLUSTRE_MOUNT_TARGET");
351 printf("LibLustre: no mount target specified\n");
355 CDEBUG(D_CONFIG, "LibLustre: mount point %s, target %s\n",
356 lustre_path, target);
359 /* initialize libsysio & mount rootfs */
361 perror("init sysio");
364 _sysio_native_init();
366 err = _sysio_mount_root("/", "native", mntflgs, NULL);
368 fprintf(stderr, "sysio mount failed: %s\n", strerror(errno));
372 if (_sysio_lustre_init())
374 #endif /* INIT_SYSIO */
378 err = mount(target, lustre_path, lustre_driver, mntflgs, NULL);
379 if (err && mnt_retry && (-- count)) {
380 fprintf(stderr, "Lustre mount failed: %s. "
381 "Will retry %d more times\n",
382 strerror(errno), mnt_retry - count );
385 } while (err && count > 0);
387 fprintf(stderr, "Lustre mount failed: %s\n", strerror(errno));
392 void __liblustre_cleanup_(void)
395 /* guard against being called multiple times */
396 static int cleaned = 0;
403 /* user app might chdir to a lustre directory, and leave busy pnode
404 * during finaly libsysio cleanup. here we chdir back to "/".
405 * but it can't fix the situation that liblustre is mounted
412 /* we can't call umount here, because libsysio will not cleanup
413 * opening files for us. _sysio_shutdown() will cleanup fds at
414 * first but which will also close the sockets we need for umount
415 * liblutre. this dilema lead to another hack in
416 * libsysio/src/file_hack.c FIXME
420 cleanup_lib_portals();