+++ /dev/null
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/liblustre/llite_lib.c
- *
- * Lustre Light common routines
- */
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/mount.h>
-#include <libcfs/libcfs.h>
-#include <lustre/lustre_idl.h>
-#include <liblustre.h>
-#include <lnet/lnet.h>
-#include <lustre_cfg.h>
-#include <lustre_export.h>
-#include <lustre_log.h>
-#include <lustre_ver.h>
-#include <obd.h>
-#include <obd_class.h>
-#include <obd_support.h>
-#include "llite_lib.h"
-#include "lutil.h"
-
-static int lllib_init(void)
-{
- if (liblustre_init_current("liblustre") ||
- init_lib_portals() ||
- init_obdclass() ||
- ptlrpc_init() ||
- mgc_init() ||
- lmv_init() ||
- mdc_init() ||
- lov_init() ||
- osc_init() ||
- slp_global_init())
- return -1;
-
- return _sysio_fssw_register("lustre", &llu_fssw_ops);
-}
-
-int liblustre_process_log(struct config_llog_instance *cfg,
- char *mgsnid, char *profile,
- int allow_recov)
-{
- struct lustre_cfg_bufs bufs;
- struct lustre_cfg *lcfg;
- char *peer = "MGS_UUID";
- struct obd_device *obd;
- struct obd_export *exp;
- char *name = "mgc_dev";
- class_uuid_t uuid;
- struct obd_uuid mgc_uuid;
- struct llog_ctxt *ctxt;
- lnet_nid_t nid = 0;
- char *mdsnid;
- int err, rc = 0;
- struct obd_connect_data *ocd = NULL;
- ENTRY;
-
- ll_generate_random_uuid(uuid);
- class_uuid_unparse(uuid, &mgc_uuid);
-
- nid = libcfs_str2nid(mgsnid);
- if (nid == LNET_NID_ANY) {
- CERROR("Can't parse NID %s\n", mgsnid);
- RETURN(-EINVAL);
- }
-
- lustre_cfg_bufs_reset(&bufs, NULL);
- lustre_cfg_bufs_set_string(&bufs, 1, peer);
- lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
- lcfg->lcfg_nid = nid;
- rc = class_process_config(lcfg);
- lustre_cfg_free(lcfg);
- if (rc < 0)
- GOTO(out, rc);
-
- lustre_cfg_bufs_reset(&bufs, name);
- lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_MGC_NAME);
- lustre_cfg_bufs_set_string(&bufs, 2, mgc_uuid.uuid);
- lcfg = lustre_cfg_new(LCFG_ATTACH, &bufs);
- rc = class_process_config(lcfg);
- lustre_cfg_free(lcfg);
- if (rc < 0)
- GOTO(out_del_uuid, rc);
-
- lustre_cfg_bufs_reset(&bufs, name);
- lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_MGS_OBDNAME);
- lustre_cfg_bufs_set_string(&bufs, 2, peer);
- lcfg = lustre_cfg_new(LCFG_SETUP, &bufs);
- rc = class_process_config(lcfg);
- lustre_cfg_free(lcfg);
- if (rc < 0)
- GOTO(out_detach, rc);
-
- while ((mdsnid = strsep(&mgsnid, ","))) {
- nid = libcfs_str2nid(mdsnid);
- lustre_cfg_bufs_reset(&bufs, NULL);
- lustre_cfg_bufs_set_string(&bufs, 1, libcfs_nid2str(nid));
- lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
- lcfg->lcfg_nid = nid;
- rc = class_process_config(lcfg);
- lustre_cfg_free(lcfg);
- if (rc) {
- CERROR("Add uuid for %s failed %d\n",
- libcfs_nid2str(nid), rc);
- continue;
- }
-
- lustre_cfg_bufs_reset(&bufs, name);
- lustre_cfg_bufs_set_string(&bufs, 1, libcfs_nid2str(nid));
- lcfg = lustre_cfg_new(LCFG_ADD_CONN, &bufs);
- lcfg->lcfg_nid = nid;
- rc = class_process_config(lcfg);
- lustre_cfg_free(lcfg);
- if (rc) {
- CERROR("Add conn for %s failed %d\n",
- libcfs_nid2str(nid), rc);
- continue;
- }
- }
-
- obd = class_name2obd(name);
- if (obd == NULL)
- GOTO(out_cleanup, rc = -EINVAL);
-
- OBD_ALLOC(ocd, sizeof(*ocd));
- if (ocd == NULL)
- GOTO(out_cleanup, rc = -ENOMEM);
-
- ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_AT |
- OBD_CONNECT_FULL20;
- ocd->ocd_version = LUSTRE_VERSION_CODE;
-
- rc = obd_connect(NULL, &exp, obd, &mgc_uuid, ocd, NULL);
- if (rc) {
- CERROR("cannot connect to %s at %s: rc = %d\n",
- LUSTRE_MGS_OBDNAME, mgsnid, rc);
- GOTO(out_cleanup, rc);
- }
-
- ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
- cfg->cfg_flags |= CFG_F_COMPAT146;
- rc = class_config_parse_llog(NULL, ctxt, profile, cfg);
- llog_ctxt_put(ctxt);
- if (rc) {
- CERROR("class_config_parse_llog failed: rc = %d\n", rc);
- }
-
- /* We don't so much care about errors in cleaning up the config llog
- * connection, as we have already read the config by this point. */
- err = obd_disconnect(exp);
- if (err)
- CERROR("obd_disconnect failed: rc = %d\n", err);
-
-out_cleanup:
- if (ocd)
- OBD_FREE(ocd, sizeof(*ocd));
-
- lustre_cfg_bufs_reset(&bufs, name);
- lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
- err = class_process_config(lcfg);
- lustre_cfg_free(lcfg);
- if (err)
- CERROR("md_cleanup failed: rc = %d\n", err);
-
-out_detach:
- lustre_cfg_bufs_reset(&bufs, name);
- lcfg = lustre_cfg_new(LCFG_DETACH, &bufs);
- err = class_process_config(lcfg);
- lustre_cfg_free(lcfg);
- if (err)
- CERROR("md_detach failed: rc = %d\n", err);
-
-out_del_uuid:
- lustre_cfg_bufs_reset(&bufs, name);
- lustre_cfg_bufs_set_string(&bufs, 1, peer);
- lcfg = lustre_cfg_new(LCFG_DEL_UUID, &bufs);
- err = class_process_config(lcfg);
- if (err)
- CERROR("del MDC UUID failed: rc = %d\n", err);
- lustre_cfg_free(lcfg);
-out:
-
- RETURN(rc);
-}
-
-/* parse host:/fsname string */
-int ll_parse_mount_target(const char *target, char **mgsnid,
- char **fsname)
-{
- static char buf[256];
- char *s;
-
- buf[255] = 0;
- strncpy(buf, target, 255);
-
- if ((s = strchr(buf, ':'))) {
- *mgsnid = buf;
- *s = '\0';
-
- while (*++s == '/')
- ;
- sprintf(s + strlen(s), "-client");
- *fsname = s;
-
- return 0;
- }
-
- return -1;
-}
-
-/*
- * early liblustre init
- * called from C startup in catamount apps, before main()
- *
- * The following is a skeleton sysio startup sequence,
- * as implemented in C startup (skipping error handling).
- * In this framework none of these calls need be made here
- * or in the apps themselves. The NAMESPACE_STRING specifying
- * the initial set of fs ops (creates, mounts, etc.) is passed
- * as an environment variable.
- *
- * _sysio_init();
- * _sysio_incore_init();
- * _sysio_native_init();
- * _sysio_lustre_init();
- * _sysio_boot(NAMESPACE_STRING);
- *
- * the name _sysio_lustre_init() follows the naming convention
- * established in other fs drivers from libsysio:
- * _sysio_incore_init(), _sysio_native_init()
- *
- * _sysio_lustre_init() must be called before _sysio_boot()
- * to enable libsysio's processing of namespace init strings containing
- * lustre filesystem operations
- */
-static int _sysio_lustre_init(void)
-{
- int err;
- char *envstr;
-#ifndef INIT_SYSIO
- extern void __liblustre_cleanup_(void);
-#endif
-
- liblustre_init_random();
-
- err = lllib_init();
- if (err) {
- perror("init llite driver");
- return err;
- }
-
- envstr = getenv("LIBLUSTRE_TIMEOUT");
- if (envstr != NULL) {
- obd_timeout = (unsigned int)strtol(envstr, NULL, 0);
- printf("LibLustre: obd timeout=%u seconds\n",
- obd_timeout);
- }
-
- /* debug peer on timeout? */
- envstr = getenv("LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT");
- if (envstr != NULL) {
- obd_debug_peer_on_timeout =
- (unsigned int)strtol(envstr, NULL, 0);
- printf("LibLustre: debug peer on timeout=%d\n",
- obd_debug_peer_on_timeout ? 0 : 1);
- }
-
-#ifndef INIT_SYSIO
- (void)atexit(__liblustre_cleanup_);
-#endif
- return err;
-}
-
-extern int _sysio_native_init();
-
-static int mnt_retry = 0;
-
-char *lustre_path = NULL;
-
-void __liblustre_setup_(void)
-{
- char *target = NULL;
- char *lustre_driver = "lustre";
- unsigned mntflgs = 0;
- int err, count;
-
- lustre_path = getenv("LIBLUSTRE_MOUNT_POINT");
- if (!lustre_path) {
- lustre_path = "/mnt/lustre";
- }
-
- target = getenv("LIBLUSTRE_MOUNT_RETRY");
- if (target) {
- mnt_retry = atoi(target);
- if (mnt_retry < 0)
- mnt_retry = 0;
- }
-
- /* mount target */
- target = getenv("LIBLUSTRE_MOUNT_TARGET");
- if (!target) {
- printf("LibLustre: no mount target specified\n");
- exit(1);
- }
-
- CDEBUG(D_CONFIG, "LibLustre: mount point %s, target %s\n",
- lustre_path, target);
-
-#ifdef INIT_SYSIO
- /* initialize libsysio & mount rootfs */
- if (_sysio_init()) {
- perror("init sysio");
- exit(1);
- }
- _sysio_native_init();
-
- err = _sysio_mount_root("/", "native", mntflgs, NULL);
- if (err) {
- fprintf(stderr, "sysio mount failed: %s\n", strerror(errno));
- exit(1);
- }
-
- if (_sysio_lustre_init())
- exit(1);
-#endif /* INIT_SYSIO */
-
- count = mnt_retry;
- do {
- err = mount(target, lustre_path, lustre_driver, mntflgs, NULL);
- if (err && mnt_retry && (-- count)) {
- fprintf(stderr, "Lustre mount failed: %s. "
- "Will retry %d more times\n",
- strerror(errno), mnt_retry - count );
- sleep(2);
- }
- } while (err && count > 0);
- if (err) {
- fprintf(stderr, "Lustre mount failed: %s\n", strerror(errno));
- exit(1);
- }
-}
-
-void __liblustre_cleanup_(void)
-{
-#ifndef INIT_SYSIO
- /* guard against being called multiple times */
- static int cleaned = 0;
-
- if (cleaned)
- return;
- cleaned++;
-#endif
-
- /* user app might chdir to a lustre directory, and leave busy pnode
- * during finaly libsysio cleanup. here we chdir back to "/".
- * but it can't fix the situation that liblustre is mounted
- * at "/".
- */
- if (!chdir("/")) {}
-#if 0
- umount(lustre_path);
-#endif
- /* we can't call umount here, because libsysio will not cleanup
- * opening files for us. _sysio_shutdown() will cleanup fds at
- * first but which will also close the sockets we need for umount
- * liblutre. this dilema lead to another hack in
- * libsysio/src/file_hack.c FIXME
- */
-#ifdef INIT_SYSIO
- _sysio_shutdown();
- cleanup_lib_portals();
- LNetFini();
-#endif
-}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff