From: Peng Tao Date: Mon, 3 Jun 2013 13:37:28 +0000 (+0800) Subject: staging/lustre: remove enum config_flags and obd_mount_server.c X-Git-Tag: MMI-PSA29.97-13-9~14152^2~358 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9c110d71b3f9db9e22a55e1ef5fd36b2cb942e4f;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git staging/lustre: remove enum config_flags and obd_mount_server.c obd_mount_server.c is not really used at all, and we can remove enum config_flags that are causing symbol conflictions due to CONFIG_ prefixing... Signed-off-by: Peng Tao Signed-off-by: Andreas Dilger Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h index 98fdb32e98af..92b3b3aad69f 100644 --- a/drivers/staging/lustre/lustre/include/obd.h +++ b/drivers/staging/lustre/lustre/include/obd.h @@ -908,13 +908,6 @@ enum obd_notify_event { OBD_NOTIFY_ACTIVATE }; -/* bit-mask flags for config events */ -enum config_flags { - CONFIG_LOG = 0x1, /* finished processing config log */ - CONFIG_SYNC = 0x2, /* mdt synced 1 ost */ - CONFIG_TARGET = 0x4 /* one target is added */ -}; - /* * Data structure used to pass obd_notify()-event to non-obd listeners (llite * and liblustre being main examples). diff --git a/drivers/staging/lustre/lustre/obdclass/obd_mount_server.c b/drivers/staging/lustre/lustre/obdclass/obd_mount_server.c deleted file mode 100644 index a3a44091c433..000000000000 --- a/drivers/staging/lustre/lustre/obdclass/obd_mount_server.c +++ /dev/null @@ -1,1783 +0,0 @@ -/* - * 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) 2007, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2011, 2012, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - * - * lustre/obdclass/obd_mount_server.c - * - * Server mount routines - * - * Author: Nathan Rutman - */ - - -#define DEBUG_SUBSYSTEM S_CLASS -#define D_MOUNT (D_SUPER | D_CONFIG /* | D_WARNING */) -#define PRINT_CMD CDEBUG -#define PRINT_MASK (D_SUPER | D_CONFIG) - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/*********** mount lookup *********/ - -DEFINE_MUTEX(lustre_mount_info_lock); -static LIST_HEAD(server_mount_info_list); - -static struct lustre_mount_info *server_find_mount(const char *name) -{ - struct list_head *tmp; - struct lustre_mount_info *lmi; - ENTRY; - - list_for_each(tmp, &server_mount_info_list) { - lmi = list_entry(tmp, struct lustre_mount_info, - lmi_list_chain); - if (strcmp(name, lmi->lmi_name) == 0) - RETURN(lmi); - } - RETURN(NULL); -} - -/* we must register an obd for a mount before we call the setup routine. - *_setup will call lustre_get_mount to get the mnt struct - by obd_name, since we can't pass the pointer to setup. */ -static int server_register_mount(const char *name, struct super_block *sb, - struct vfsmount *mnt) -{ - struct lustre_mount_info *lmi; - char *name_cp; - ENTRY; - - LASSERT(sb); - - OBD_ALLOC(lmi, sizeof(*lmi)); - if (!lmi) - RETURN(-ENOMEM); - OBD_ALLOC(name_cp, strlen(name) + 1); - if (!name_cp) { - OBD_FREE(lmi, sizeof(*lmi)); - RETURN(-ENOMEM); - } - strcpy(name_cp, name); - - mutex_lock(&lustre_mount_info_lock); - - if (server_find_mount(name)) { - mutex_unlock(&lustre_mount_info_lock); - OBD_FREE(lmi, sizeof(*lmi)); - OBD_FREE(name_cp, strlen(name) + 1); - CERROR("Already registered %s\n", name); - RETURN(-EEXIST); - } - lmi->lmi_name = name_cp; - lmi->lmi_sb = sb; - lmi->lmi_mnt = mnt; - list_add(&lmi->lmi_list_chain, &server_mount_info_list); - - mutex_unlock(&lustre_mount_info_lock); - - CDEBUG(D_MOUNT, "reg_mnt %p from %s\n", lmi->lmi_mnt, name); - - RETURN(0); -} - -/* when an obd no longer needs a mount */ -static int server_deregister_mount(const char *name) -{ - struct lustre_mount_info *lmi; - ENTRY; - - mutex_lock(&lustre_mount_info_lock); - lmi = server_find_mount(name); - if (!lmi) { - mutex_unlock(&lustre_mount_info_lock); - CERROR("%s not registered\n", name); - RETURN(-ENOENT); - } - - CDEBUG(D_MOUNT, "dereg_mnt %p from %s\n", lmi->lmi_mnt, name); - - OBD_FREE(lmi->lmi_name, strlen(lmi->lmi_name) + 1); - list_del(&lmi->lmi_list_chain); - OBD_FREE(lmi, sizeof(*lmi)); - mutex_unlock(&lustre_mount_info_lock); - - RETURN(0); -} - -/* obd's look up a registered mount using their obdname. This is just - for initial obd setup to find the mount struct. It should not be - called every time you want to mntget. */ -struct lustre_mount_info *server_get_mount(const char *name) -{ - struct lustre_mount_info *lmi; - struct lustre_sb_info *lsi; - ENTRY; - - mutex_lock(&lustre_mount_info_lock); - lmi = server_find_mount(name); - mutex_unlock(&lustre_mount_info_lock); - if (!lmi) { - CERROR("Can't find mount for %s\n", name); - RETURN(NULL); - } - lsi = s2lsi(lmi->lmi_sb); - - atomic_inc(&lsi->lsi_mounts); - - CDEBUG(D_MOUNT, "get_mnt %p from %s, refs=%d\n", lmi->lmi_mnt, - name, atomic_read(&lsi->lsi_mounts)); - - RETURN(lmi); -} -EXPORT_SYMBOL(server_get_mount); - -/* - * Used by mdt to get mount_info from obdname. - * There are no blocking when using the mount_info. - * Do not use server_get_mount for this purpose. - */ -struct lustre_mount_info *server_get_mount_2(const char *name) -{ - struct lustre_mount_info *lmi; - ENTRY; - - mutex_lock(&lustre_mount_info_lock); - lmi = server_find_mount(name); - mutex_unlock(&lustre_mount_info_lock); - if (!lmi) - CERROR("Can't find mount for %s\n", name); - - RETURN(lmi); -} -EXPORT_SYMBOL(server_get_mount_2); - -/* to be called from obd_cleanup methods */ -int server_put_mount(const char *name, struct vfsmount *mnt) -{ - struct lustre_mount_info *lmi; - struct lustre_sb_info *lsi; - ENTRY; - - mutex_lock(&lustre_mount_info_lock); - lmi = server_find_mount(name); - mutex_unlock(&lustre_mount_info_lock); - if (!lmi) { - CERROR("Can't find mount for %s\n", name); - RETURN(-ENOENT); - } - lsi = s2lsi(lmi->lmi_sb); - - CDEBUG(D_MOUNT, "put_mnt %p from %s, refs=%d\n", - lmi->lmi_mnt, name, atomic_read(&lsi->lsi_mounts)); - - if (lustre_put_lsi(lmi->lmi_sb)) - CDEBUG(D_MOUNT, "Last put of mnt %p from %s\n", - lmi->lmi_mnt, name); - - /* this obd should never need the mount again */ - server_deregister_mount(name); - - RETURN(0); -} -EXPORT_SYMBOL(server_put_mount); - -/* Corresponding to server_get_mount_2 */ -int server_put_mount_2(const char *name, struct vfsmount *mnt) -{ - ENTRY; - RETURN(0); -} -EXPORT_SYMBOL(server_put_mount_2); - -/* Set up a MGS to serve startup logs */ -static int server_start_mgs(struct super_block *sb) -{ - struct lustre_sb_info *lsi = s2lsi(sb); - struct vfsmount *mnt = lsi->lsi_srv_mnt; - struct lustre_mount_info *lmi; - int rc = 0; - ENTRY; - - /* It is impossible to have more than 1 MGS per node, since - MGC wouldn't know which to connect to */ - lmi = server_find_mount(LUSTRE_MGS_OBDNAME); - if (lmi) { - lsi = s2lsi(lmi->lmi_sb); - LCONSOLE_ERROR_MSG(0x15d, "The MGS service was already started" - " from server\n"); - RETURN(-EALREADY); - } - - CDEBUG(D_CONFIG, "Start MGS service %s\n", LUSTRE_MGS_OBDNAME); - - rc = server_register_mount(LUSTRE_MGS_OBDNAME, sb, mnt); - - if (!rc) { - rc = lustre_start_simple(LUSTRE_MGS_OBDNAME, LUSTRE_MGS_NAME, - LUSTRE_MGS_OBDNAME, 0, 0, - lsi->lsi_osd_obdname, 0); - /* Do NOT call server_deregister_mount() here. This leads to - * inability cleanup cleanly and free lsi and other stuff when - * mgs calls server_put_mount() in error handling case. -umka */ - } - - if (rc) - LCONSOLE_ERROR_MSG(0x15e, "Failed to start MGS '%s' (%d). " - "Is the 'mgs' module loaded?\n", - LUSTRE_MGS_OBDNAME, rc); - RETURN(rc); -} - -static int server_stop_mgs(struct super_block *sb) -{ - struct obd_device *obd; - int rc; - ENTRY; - - CDEBUG(D_MOUNT, "Stop MGS service %s\n", LUSTRE_MGS_OBDNAME); - - /* There better be only one MGS */ - obd = class_name2obd(LUSTRE_MGS_OBDNAME); - if (!obd) { - CDEBUG(D_CONFIG, "mgs %s not running\n", LUSTRE_MGS_OBDNAME); - RETURN(-EALREADY); - } - - /* The MGS should always stop when we say so */ - obd->obd_force = 1; - rc = class_manual_cleanup(obd); - RETURN(rc); -} - -/* Since there's only one mgc per node, we have to change it's fs to get - access to the right disk. */ -static int server_mgc_set_fs(struct obd_device *mgc, struct super_block *sb) -{ - struct lustre_sb_info *lsi = s2lsi(sb); - int rc; - ENTRY; - - CDEBUG(D_MOUNT, "Set mgc disk for %s\n", lsi->lsi_lmd->lmd_dev); - - /* cl_mgc_sem in mgc insures we sleep if the mgc_fs is busy */ - rc = obd_set_info_async(NULL, mgc->obd_self_export, - sizeof(KEY_SET_FS), KEY_SET_FS, - sizeof(*sb), sb, NULL); - if (rc != 0) - CERROR("can't set_fs %d\n", rc); - - RETURN(rc); -} - -static int server_mgc_clear_fs(struct obd_device *mgc) -{ - int rc; - ENTRY; - - CDEBUG(D_MOUNT, "Unassign mgc disk\n"); - - rc = obd_set_info_async(NULL, mgc->obd_self_export, - sizeof(KEY_CLEAR_FS), KEY_CLEAR_FS, - 0, NULL, NULL); - RETURN(rc); -} - -static int is_mdc_device(const char *devname) -{ - char *ptr; - - ptr = strrchr(devname, '-'); - if (ptr != NULL && strcmp(ptr, "-mdc") == 0) - return 1; - - return 0; -} - -static inline int tgt_is_mdt0(const char *tgtname) -{ - __u32 idx; - int type; - - type = server_name2index(tgtname, &idx, NULL); - if (type != LDD_F_SV_TYPE_MDT) - return 0; - - return idx == 0; -} - -static inline int is_mdc_for_mdt0(const char *devname) -{ - char *ptr; - - if (!is_mdc_device(devname)) - return 0; - - ptr = strrchr(devname, '-'); - if (ptr == NULL) - return 0; - - *ptr = 0; - if (tgt_is_mdt0(devname)) { - *ptr = '-'; - return 1; - } - *ptr = '-'; - return 0; -} - -/** - * Convert OST/MDT name(fsname-OSTxxxx) to a lwp name - * (fsname-MDT0000-lwp-OSTxxxx) - **/ -int tgt_name2lwpname(const char *svname, char *lwpname) -{ - char *fsname; - const char *tgt; - int rc; - ENTRY; - - OBD_ALLOC(fsname, MTI_NAME_MAXLEN); - if (fsname == NULL) - RETURN(-ENOMEM); - - rc = server_name2fsname(svname, fsname, &tgt); - if (rc != 0) { - CERROR("%s: failed to get fsname from svname. %d\n", - svname, rc); - GOTO(cleanup, rc); - } - - if (*tgt != '-' && *tgt != ':') { - CERROR("%s: invalid svname name!\n", svname); - GOTO(cleanup, rc = -EINVAL); - } - - tgt++; - if (strncmp(tgt, "OST", 3) != 0 && strncmp(tgt, "MDT", 3) != 0) { - CERROR("%s is not an OST or MDT target!\n", svname); - GOTO(cleanup, rc = -EINVAL); - } - sprintf(lwpname, "%s-MDT0000-%s-%s", fsname, LUSTRE_LWP_NAME, tgt); -cleanup: - if (fsname != NULL) - OBD_FREE(fsname, MTI_NAME_MAXLEN); - RETURN(rc); -} -EXPORT_SYMBOL(tgt_name2lwpname); - -static LIST_HEAD(lwp_register_list); -DEFINE_MUTEX(lwp_register_list_lock); - -int lustre_register_lwp_item(const char *lwpname, struct obd_export **exp, - register_lwp_cb cb_func, void *cb_data) -{ - struct obd_device *lwp; - struct lwp_register_item *lri; - ENTRY; - - LASSERTF(strlen(lwpname) < MTI_NAME_MAXLEN, "lwpname is too long %s\n", - lwpname); - LASSERT(exp != NULL && *exp == NULL); - - OBD_ALLOC_PTR(lri); - if (lri == NULL) - RETURN(-ENOMEM); - - mutex_lock(&lwp_register_list_lock); - - lwp = class_name2obd(lwpname); - if (lwp != NULL && lwp->obd_set_up == 1) { - struct obd_uuid *uuid; - - OBD_ALLOC_PTR(uuid); - if (uuid == NULL) { - mutex_unlock(&lwp_register_list_lock); - OBD_FREE_PTR(lri); - RETURN(-ENOMEM); - } - memcpy(uuid->uuid, lwpname, strlen(lwpname)); - *exp = cfs_hash_lookup(lwp->obd_uuid_hash, uuid); - OBD_FREE_PTR(uuid); - } - - memcpy(lri->lri_name, lwpname, strlen(lwpname)); - lri->lri_exp = exp; - lri->lri_cb_func = cb_func; - lri->lri_cb_data = cb_data; - INIT_LIST_HEAD(&lri->lri_list); - list_add(&lri->lri_list, &lwp_register_list); - - if (*exp != NULL && cb_func != NULL) - cb_func(cb_data); - - mutex_unlock(&lwp_register_list_lock); - RETURN(0); -} -EXPORT_SYMBOL(lustre_register_lwp_item); - -void lustre_deregister_lwp_item(struct obd_export **exp) -{ - struct lwp_register_item *lri, *tmp; - - mutex_lock(&lwp_register_list_lock); - list_for_each_entry_safe(lri, tmp, &lwp_register_list, lri_list) { - if (exp == lri->lri_exp) { - if (*exp) - class_export_put(*exp); - list_del(&lri->lri_list); - OBD_FREE_PTR(lri); - break; - } - } - mutex_unlock(&lwp_register_list_lock); -} -EXPORT_SYMBOL(lustre_deregister_lwp_item); - -static void lustre_notify_lwp_list(struct obd_export *exp) -{ - struct lwp_register_item *lri, *tmp; - LASSERT(exp != NULL); - - mutex_lock(&lwp_register_list_lock); - list_for_each_entry_safe(lri, tmp, &lwp_register_list, lri_list) { - if (strcmp(exp->exp_obd->obd_name, lri->lri_name)) - continue; - if (*lri->lri_exp != NULL) - continue; - *lri->lri_exp = class_export_get(exp); - if (lri->lri_cb_func != NULL) - lri->lri_cb_func(lri->lri_cb_data); - } - mutex_unlock(&lwp_register_list_lock); -} - -static int lustre_lwp_connect(struct obd_device *lwp) -{ - struct lu_env env; - struct lu_context session_ctx; - struct obd_export *exp; - struct obd_uuid *uuid = NULL; - struct obd_connect_data *data = NULL; - int rc; - ENTRY; - - /* log has been fully processed, let clients connect */ - rc = lu_env_init(&env, lwp->obd_lu_dev->ld_type->ldt_ctx_tags); - if (rc != 0) - RETURN(rc); - - lu_context_init(&session_ctx, LCT_SESSION); - session_ctx.lc_thread = NULL; - lu_context_enter(&session_ctx); - env.le_ses = &session_ctx; - - OBD_ALLOC_PTR(data); - if (data == NULL) - GOTO(out, rc = -ENOMEM); - - data->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_INDEX; - data->ocd_version = LUSTRE_VERSION_CODE; - data->ocd_connect_flags |= OBD_CONNECT_MDS_MDS | OBD_CONNECT_FID | - OBD_CONNECT_AT | OBD_CONNECT_LRU_RESIZE | - OBD_CONNECT_FULL20 | OBD_CONNECT_LVB_TYPE | - OBD_CONNECT_LIGHTWEIGHT; - OBD_ALLOC_PTR(uuid); - if (uuid == NULL) - GOTO(out, rc = -ENOMEM); - - if (strlen(lwp->obd_name) > sizeof(uuid->uuid)) { - CERROR("%s: Too long lwp name %s, max_size is %d\n", - lwp->obd_name, lwp->obd_name, (int)sizeof(uuid->uuid)); - GOTO(out, rc = -EINVAL); - } - - /* Use lwp name as the uuid, so we find the export by lwp name later */ - memcpy(uuid->uuid, lwp->obd_name, strlen(lwp->obd_name)); - rc = obd_connect(&env, &exp, lwp, uuid, data, NULL); - if (rc != 0) - CERROR("%s: connect failed: rc = %d\n", lwp->obd_name, rc); - else - lustre_notify_lwp_list(exp); - -out: - if (data != NULL) - OBD_FREE_PTR(data); - if (uuid != NULL) - OBD_FREE_PTR(uuid); - - lu_env_fini(&env); - lu_context_exit(&session_ctx); - lu_context_fini(&session_ctx); - - RETURN(rc); -} - -/** - * lwp is used by slaves (Non-MDT0 targets) to manage the connection - * to MDT0. - **/ -static int lustre_lwp_setup(struct lustre_cfg *lcfg, struct lustre_sb_info *lsi) -{ - struct obd_connect_data *data = NULL; - struct obd_device *obd; - char *lwpname = NULL; - char *lwpuuid = NULL; - int rc; - ENTRY; - - rc = class_add_uuid(lustre_cfg_string(lcfg, 1), - lcfg->lcfg_nid); - if (rc) { - CERROR("%s: Can't add uuid: rc =%d\n", lsi->lsi_svname, rc); - GOTO(out, rc); - } - - OBD_ALLOC(lwpname, MTI_NAME_MAXLEN); - if (lwpname == NULL) - GOTO(out, rc = -ENOMEM); - - rc = tgt_name2lwpname(lsi->lsi_svname, lwpname); - if (rc != 0) { - CERROR("%s: failed to generate lwp name. %d\n", - lsi->lsi_svname, rc); - GOTO(out, rc); - } - - OBD_ALLOC(lwpuuid, MTI_NAME_MAXLEN); - if (lwpuuid == NULL) - GOTO(out, rc = -ENOMEM); - - sprintf(lwpuuid, "%s_UUID", lwpname); - rc = lustre_start_simple(lwpname, LUSTRE_LWP_NAME, - lwpuuid, lustre_cfg_string(lcfg, 1), - 0, 0, 0); - if (rc) { - CERROR("%s: setup up failed: rc %d\n", lwpname, rc); - GOTO(out, rc); - } - - obd = class_name2obd(lwpname); - LASSERT(obd != NULL); - - rc = lustre_lwp_connect(obd); - if (rc != 0) - CERROR("%s: connect failed: rc = %d\n", lwpname, rc); -out: - if (data != NULL) - OBD_FREE_PTR(data); - if (lwpname != NULL) - OBD_FREE(lwpname, MTI_NAME_MAXLEN); - if (lwpuuid != NULL) - OBD_FREE(lwpuuid, MTI_NAME_MAXLEN); - - RETURN(rc); -} - -/* the caller is responsible for memory free */ -static struct obd_device *lustre_find_lwp(struct lustre_sb_info *lsi, - char **lwpname, char **logname) -{ - struct obd_device *lwp; - int rc = 0; - ENTRY; - - LASSERT(lwpname != NULL); - LASSERT(IS_OST(lsi) || IS_MDT(lsi)); - - OBD_ALLOC(*lwpname, MTI_NAME_MAXLEN); - if (*lwpname == NULL) - RETURN(ERR_PTR(-ENOMEM)); - - if (logname != NULL) { - OBD_ALLOC(*logname, MTI_NAME_MAXLEN); - if (*logname == NULL) - GOTO(out, rc = -ENOMEM); - rc = server_name2fsname(lsi->lsi_svname, *lwpname, NULL); - if (rc != 0) { - CERROR("%s: failed to get fsname from svname. %d\n", - lsi->lsi_svname, rc); - GOTO(out, rc = -EINVAL); - } - sprintf(*logname, "%s-client", *lwpname); - } - - rc = tgt_name2lwpname(lsi->lsi_svname, *lwpname); - if (rc != 0) { - CERROR("%s: failed to generate lwp name. %d\n", - lsi->lsi_svname, rc); - GOTO(out, rc = -EINVAL); - } - - lwp = class_name2obd(*lwpname); - -out: - if (rc != 0) { - if (*lwpname != NULL) { - OBD_FREE(*lwpname, MTI_NAME_MAXLEN); - *lwpname = NULL; - } - if (logname != NULL && *logname != NULL) { - OBD_FREE(*logname, MTI_NAME_MAXLEN); - *logname = NULL; - } - lwp = ERR_PTR(rc); - } - - RETURN(lwp != NULL ? lwp : ERR_PTR(-ENOENT)); -} - -static int lustre_lwp_add_conn(struct lustre_cfg *cfg, - struct lustre_sb_info *lsi) -{ - struct lustre_cfg_bufs *bufs = NULL; - struct lustre_cfg *lcfg = NULL; - char *lwpname = NULL; - struct obd_device *lwp; - int rc; - ENTRY; - - lwp = lustre_find_lwp(lsi, &lwpname, NULL); - if (IS_ERR(lwp)) { - CERROR("%s: can't find lwp device.\n", lsi->lsi_svname); - GOTO(out, rc = PTR_ERR(lwp)); - } - LASSERT(lwpname != NULL); - - OBD_ALLOC_PTR(bufs); - if (bufs == NULL) - GOTO(out, rc = -ENOMEM); - - lustre_cfg_bufs_reset(bufs, lwpname); - lustre_cfg_bufs_set_string(bufs, 1, - lustre_cfg_string(cfg, 1)); - - lcfg = lustre_cfg_new(LCFG_ADD_CONN, bufs); - - rc = class_add_conn(lwp, lcfg); - if (rc) - CERROR("%s: can't add conn: rc = %d\n", lwpname, rc); - -out: - if (bufs != NULL) - OBD_FREE_PTR(bufs); - if (lcfg != NULL) - lustre_cfg_free(lcfg); - if (lwpname != NULL) - OBD_FREE(lwpname, MTI_NAME_MAXLEN); - RETURN(rc); -} - -/** - * Retrieve MDT nids from the client log, then start the lwp device. - * there are only two scenarios which would include mdt nid. - * 1. - * marker 5 (flags=0x01, v2.1.54.0) lustre-MDT0000 'add mdc' xxx- - * add_uuid nid=192.168.122.162@tcp(0x20000c0a87aa2) 0: 1:192.168.122.162@tcp - * attach 0:lustre-MDT0000-mdc 1:mdc 2:lustre-clilmv_UUID - * setup 0:lustre-MDT0000-mdc 1:lustre-MDT0000_UUID 2:192.168.122.162@tcp - * add_uuid nid=192.168.172.1@tcp(0x20000c0a8ac01) 0: 1:192.168.172.1@tcp - * add_conn 0:lustre-MDT0000-mdc 1:192.168.172.1@tcp - * modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID xxxx - * marker 5 (flags=0x02, v2.1.54.0) lustre-MDT0000 'add mdc' xxxx- - * 2. - * marker 7 (flags=0x01, v2.1.54.0) lustre-MDT0000 'add failnid' xxxx- - * add_uuid nid=192.168.122.2@tcp(0x20000c0a87a02) 0: 1:192.168.122.2@tcp - * add_conn 0:lustre-MDT0000-mdc 1:192.168.122.2@tcp - * marker 7 (flags=0x02, v2.1.54.0) lustre-MDT0000 'add failnid' xxxx- - **/ -static int client_lwp_config_process(const struct lu_env *env, - struct llog_handle *handle, - struct llog_rec_hdr *rec, void *data) -{ - struct config_llog_instance *clli = data; - int cfg_len = rec->lrh_len; - char *cfg_buf = (char *) (rec + 1); - struct lustre_cfg *lcfg = NULL; - struct lustre_sb_info *lsi; - int rc = 0, swab = 0; - ENTRY; - - if (rec->lrh_type != OBD_CFG_REC) { - CERROR("Unknown llog record type %#x encountered\n", - rec->lrh_type); - RETURN(-EINVAL); - } - - LASSERT(clli->cfg_sb != NULL); - lsi = s2lsi(clli->cfg_sb); - - lcfg = (struct lustre_cfg *)cfg_buf; - if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) { - lustre_swab_lustre_cfg(lcfg); - swab = 1; - } - - rc = lustre_cfg_sanity_check(cfg_buf, cfg_len); - if (rc) - GOTO(out, rc); - - switch (lcfg->lcfg_command) { - case LCFG_MARKER: { - struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1); - - lustre_swab_cfg_marker(marker, swab, - LUSTRE_CFG_BUFLEN(lcfg, 1)); - if (marker->cm_flags & CM_SKIP || - marker->cm_flags & CM_EXCLUDE) - GOTO(out, rc = 0); - - if (!tgt_is_mdt0(marker->cm_tgtname)) - GOTO(out, rc = 0); - - if (!strncmp(marker->cm_comment, "add mdc", 7) || - !strncmp(marker->cm_comment, "add failnid", 11)) { - if (marker->cm_flags & CM_START) { - clli->cfg_flags = CFG_F_MARKER; - /* This hack is to differentiate the - * ADD_UUID is come from "add mdc" record - * or from "add failnid" record. */ - if (!strncmp(marker->cm_comment, - "add failnid", 11)) - clli->cfg_flags |= CFG_F_SKIP; - } else if (marker->cm_flags & CM_END) { - clli->cfg_flags = 0; - } - } - break; - } - case LCFG_ADD_UUID: { - if (clli->cfg_flags == CFG_F_MARKER) { - rc = lustre_lwp_setup(lcfg, lsi); - /* XXX: process only the first nid as - * we don't need another instance of lwp */ - clli->cfg_flags |= CFG_F_SKIP; - } else if (clli->cfg_flags == (CFG_F_MARKER | CFG_F_SKIP)) { - rc = class_add_uuid(lustre_cfg_string(lcfg, 1), - lcfg->lcfg_nid); - if (rc) - CERROR("%s: Fail to add uuid, rc:%d\n", - lsi->lsi_svname, rc); - } - break; - } - case LCFG_ADD_CONN: { - if (is_mdc_for_mdt0(lustre_cfg_string(lcfg, 0))) - rc = lustre_lwp_add_conn(lcfg, lsi); - break; - } - default: - break; - } -out: - RETURN(rc); -} - -static int lustre_disconnect_lwp(struct super_block *sb) -{ - struct lustre_sb_info *lsi = s2lsi(sb); - struct obd_device *lwp; - char *lwpname = NULL; - char *logname = NULL; - struct lustre_cfg *lcfg = NULL; - struct lustre_cfg_bufs *bufs = NULL; - struct config_llog_instance *cfg = NULL; - int rc; - ENTRY; - - lwp = lustre_find_lwp(lsi, &lwpname, &logname); - if (IS_ERR(lwp) && PTR_ERR(lwp) != -ENOENT) - GOTO(out, rc = PTR_ERR(lwp)); - - LASSERT(lwpname != NULL); - LASSERT(logname != NULL); - - OBD_ALLOC_PTR(cfg); - if (cfg == NULL) - GOTO(out, rc = -ENOMEM); - - /* end log first */ - cfg->cfg_instance = sb; - rc = lustre_end_log(sb, logname, cfg); - if (rc != 0) { - CERROR("%s: Can't end config log %s.\n", lwpname, logname); - GOTO(out, rc); - } - - if (PTR_ERR(lwp) == -ENOENT) { - CDEBUG(D_CONFIG, "%s: lwp device wasn't started.\n", - lsi->lsi_svname); - GOTO(out, rc = 0); - } - - OBD_ALLOC_PTR(bufs); - if (bufs == NULL) - GOTO(out, rc = -ENOMEM); - - lustre_cfg_bufs_reset(bufs, lwp->obd_name); - lustre_cfg_bufs_set_string(bufs, 1, NULL); - lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs); - if (!lcfg) - GOTO(out, rc = -ENOMEM); - - /* Disconnect import first. NULL is passed for the '@env', since - * it will not be used. */ - rc = lwp->obd_lu_dev->ld_ops->ldo_process_config(NULL, lwp->obd_lu_dev, - lcfg); -out: - if (lcfg) - lustre_cfg_free(lcfg); - if (bufs) - OBD_FREE_PTR(bufs); - if (cfg) - OBD_FREE_PTR(cfg); - if (lwpname) - OBD_FREE(lwpname, MTI_NAME_MAXLEN); - if (logname) - OBD_FREE(logname, MTI_NAME_MAXLEN); - RETURN(rc); -} - -/** - * Stop the lwp for an OST/MDT target. - **/ -static int lustre_stop_lwp(struct super_block *sb) -{ - struct lustre_sb_info *lsi = s2lsi(sb); - struct obd_device *lwp = NULL; - char *lwpname = NULL; - int rc = 0; - ENTRY; - - lwp = lustre_find_lwp(lsi, &lwpname, NULL); - if (IS_ERR(lwp)) { - CDEBUG(PTR_ERR(lwp) == -ENOENT ? D_CONFIG : D_ERROR, - "%s: lwp wasn't started.\n", lsi->lsi_svname); - GOTO(out, rc = 0); - } - - lwp->obd_force = 1; - rc = class_manual_cleanup(lwp); - -out: - if (lwpname != NULL) - OBD_FREE(lwpname, MTI_NAME_MAXLEN); - RETURN(rc); -} - -/** - * Start the lwp(fsname-MDT0000-lwp-OSTxxxx) for an OST or MDT target, - * which would be used to establish connection from OST to MDT0. - **/ -static int lustre_start_lwp(struct super_block *sb) -{ - struct lustre_sb_info *lsi = s2lsi(sb); - struct config_llog_instance *cfg = NULL; - struct obd_device *lwp; - char *lwpname = NULL; - char *logname = NULL; - int rc; - ENTRY; - - lwp = lustre_find_lwp(lsi, &lwpname, &logname); - - /* the lwp device already stared */ - if (lwp && !IS_ERR(lwp)) - GOTO(out, rc = 0); - - if (PTR_ERR(lwp) != -ENOENT) - GOTO(out, rc = PTR_ERR(lwp)); - - LASSERT(lwpname != NULL); - LASSERT(logname != NULL); - - OBD_ALLOC_PTR(cfg); - if (cfg == NULL) - GOTO(out, rc = -ENOMEM); - - cfg->cfg_callback = client_lwp_config_process; - cfg->cfg_instance = sb; - - rc = lustre_process_log(sb, logname, cfg); -out: - if (lwpname != NULL) - OBD_FREE(lwpname, MTI_NAME_MAXLEN); - if (logname != NULL) - OBD_FREE(logname, MTI_NAME_MAXLEN); - if (cfg != NULL) - OBD_FREE_PTR(cfg); - RETURN(rc); -} - -DEFINE_MUTEX(server_start_lock); - -/* Stop MDS/OSS if nobody is using them */ -static int server_stop_servers(int lsiflags) -{ - struct obd_device *obd = NULL; - struct obd_type *type = NULL; - int rc = 0; - ENTRY; - - mutex_lock(&server_start_lock); - - /* Either an MDT or an OST or neither */ - /* if this was an MDT, and there are no more MDT's, clean up the MDS */ - if (lsiflags & LDD_F_SV_TYPE_MDT) { - obd = class_name2obd(LUSTRE_MDS_OBDNAME); - if (obd != NULL) - type = class_search_type(LUSTRE_MDT_NAME); - } - - /* if this was an OST, and there are no more OST's, clean up the OSS */ - if (lsiflags & LDD_F_SV_TYPE_OST) { - obd = class_name2obd(LUSTRE_OSS_OBDNAME); - if (obd != NULL) - type = class_search_type(LUSTRE_OST_NAME); - } - - if (obd != NULL && (type == NULL || type->typ_refcnt == 0)) { - int err; - - obd->obd_force = 1; - /* obd_fail doesn't mean much on a server obd */ - err = class_manual_cleanup(obd); - if (rc != 0) - rc = err; - } - - mutex_unlock(&server_start_lock); - - RETURN(rc); -} - -int server_mti_print(const char *title, struct mgs_target_info *mti) -{ - PRINT_CMD(PRINT_MASK, "mti %s\n", title); - PRINT_CMD(PRINT_MASK, "server: %s\n", mti->mti_svname); - PRINT_CMD(PRINT_MASK, "fs: %s\n", mti->mti_fsname); - PRINT_CMD(PRINT_MASK, "uuid: %s\n", mti->mti_uuid); - PRINT_CMD(PRINT_MASK, "ver: %d flags: %#x\n", - mti->mti_config_ver, mti->mti_flags); - return 0; -} -EXPORT_SYMBOL(server_mti_print); - -/* Generate data for registration */ -static int server_lsi2mti(struct lustre_sb_info *lsi, - struct mgs_target_info *mti) -{ - lnet_process_id_t id; - int rc, i = 0; - int cplen = 0; - ENTRY; - - if (!IS_SERVER(lsi)) - RETURN(-EINVAL); - - if (strlcpy(mti->mti_svname, lsi->lsi_svname, sizeof(mti->mti_svname)) - >= sizeof(mti->mti_svname)) - RETURN(-E2BIG); - - mti->mti_nid_count = 0; - while (LNetGetId(i++, &id) != -ENOENT) { - if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND) - continue; - - /* server use --servicenode param, only allow specified - * nids be registered */ - if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_NO_PRIMNODE) != 0 && - class_match_nid(lsi->lsi_lmd->lmd_params, - PARAM_FAILNODE, id.nid) < 1) - continue; - - /* match specified network */ - if (!class_match_net(lsi->lsi_lmd->lmd_params, - PARAM_NETWORK, LNET_NIDNET(id.nid))) - continue; - - mti->mti_nids[mti->mti_nid_count] = id.nid; - mti->mti_nid_count++; - if (mti->mti_nid_count >= MTI_NIDS_MAX) { - CWARN("Only using first %d nids for %s\n", - mti->mti_nid_count, mti->mti_svname); - break; - } - } - - mti->mti_lustre_ver = LUSTRE_VERSION_CODE; - mti->mti_config_ver = 0; - - rc = server_name2fsname(lsi->lsi_svname, mti->mti_fsname, NULL); - if (rc != 0) - return rc; - - rc = server_name2index(lsi->lsi_svname, &mti->mti_stripe_index, NULL); - if (rc < 0) - return rc; - /* Orion requires index to be set */ - LASSERT(!(rc & LDD_F_NEED_INDEX)); - /* keep only LDD flags */ - mti->mti_flags = lsi->lsi_flags & LDD_F_MASK; - if (mti->mti_flags & (LDD_F_WRITECONF | LDD_F_VIRGIN)) - mti->mti_flags |= LDD_F_UPDATE; - cplen = strlcpy(mti->mti_params, lsi->lsi_lmd->lmd_params, - sizeof(mti->mti_params)); - if (cplen >= sizeof(mti->mti_params)) - return -E2BIG; - return 0; -} - -/* Register an old or new target with the MGS. If needed MGS will construct - startup logs and assign index */ -static int server_register_target(struct lustre_sb_info *lsi) -{ - struct obd_device *mgc = lsi->lsi_mgc; - struct mgs_target_info *mti = NULL; - bool writeconf; - int rc; - ENTRY; - - LASSERT(mgc); - - if (!IS_SERVER(lsi)) - RETURN(-EINVAL); - - OBD_ALLOC_PTR(mti); - if (!mti) - RETURN(-ENOMEM); - - rc = server_lsi2mti(lsi, mti); - if (rc) - GOTO(out, rc); - - CDEBUG(D_MOUNT, "Registration %s, fs=%s, %s, index=%04x, flags=%#x\n", - mti->mti_svname, mti->mti_fsname, - libcfs_nid2str(mti->mti_nids[0]), mti->mti_stripe_index, - mti->mti_flags); - - /* if write_conf is true, the registration must succeed */ - writeconf = !!(lsi->lsi_flags & (LDD_F_NEED_INDEX | LDD_F_UPDATE)); - mti->mti_flags |= LDD_F_OPC_REG; - - /* Register the target */ - /* FIXME use mgc_process_config instead */ - rc = obd_set_info_async(NULL, mgc->u.cli.cl_mgc_mgsexp, - sizeof(KEY_REGISTER_TARGET), - KEY_REGISTER_TARGET, - sizeof(*mti), mti, NULL); - if (rc) { - if (mti->mti_flags & LDD_F_ERROR) { - LCONSOLE_ERROR_MSG(0x160, - "%s: the MGS refuses to allow this server " - "to start: rc = %d. Please see messages on " - "the MGS.\n", lsi->lsi_svname, rc); - } else if (writeconf) { - LCONSOLE_ERROR_MSG(0x15f, - "%s: cannot register this server with the MGS: " - "rc = %d. Is the MGS running?\n", - lsi->lsi_svname, rc); - } else { - CERROR("%s: error registering with the MGS: rc = %d " - "(not fatal)\n", lsi->lsi_svname, rc); - /* reset the error code for non-fatal error. */ - rc = 0; - } - GOTO(out, rc); - } - -out: - if (mti) - OBD_FREE_PTR(mti); - RETURN(rc); -} - -/** - * Notify the MGS that this target is ready. - * Used by IR - if the MGS receives this message, it will notify clients. - */ -static int server_notify_target(struct super_block *sb, struct obd_device *obd) -{ - struct lustre_sb_info *lsi = s2lsi(sb); - struct obd_device *mgc = lsi->lsi_mgc; - struct mgs_target_info *mti = NULL; - int rc; - ENTRY; - - LASSERT(mgc); - - if (!(IS_SERVER(lsi))) - RETURN(-EINVAL); - - OBD_ALLOC_PTR(mti); - if (!mti) - RETURN(-ENOMEM); - rc = server_lsi2mti(lsi, mti); - if (rc) - GOTO(out, rc); - - mti->mti_instance = obd->u.obt.obt_instance; - mti->mti_flags |= LDD_F_OPC_READY; - - /* FIXME use mgc_process_config instead */ - rc = obd_set_info_async(NULL, mgc->u.cli.cl_mgc_mgsexp, - sizeof(KEY_REGISTER_TARGET), - KEY_REGISTER_TARGET, - sizeof(*mti), mti, NULL); - - /* Imperative recovery: if the mgs informs us to use IR? */ - if (!rc && !(mti->mti_flags & LDD_F_ERROR) && - (mti->mti_flags & LDD_F_IR_CAPABLE)) - lsi->lsi_flags |= LDD_F_IR_CAPABLE; - -out: - if (mti) - OBD_FREE_PTR(mti); - RETURN(rc); - -} - -/** Start server targets: MDTs and OSTs - */ -static int server_start_targets(struct super_block *sb, struct vfsmount *mnt) -{ - struct obd_device *obd; - struct lustre_sb_info *lsi = s2lsi(sb); - struct config_llog_instance cfg; - struct lu_env env; - struct lu_device *dev; - int rc; - ENTRY; - - CDEBUG(D_MOUNT, "starting target %s\n", lsi->lsi_svname); - - if (IS_MDT(lsi)) { - /* make sure the MDS is started */ - mutex_lock(&server_start_lock); - obd = class_name2obd(LUSTRE_MDS_OBDNAME); - if (!obd) { - rc = lustre_start_simple(LUSTRE_MDS_OBDNAME, - LUSTRE_MDS_NAME, - LUSTRE_MDS_OBDNAME"_uuid", - 0, 0, 0, 0); - if (rc) { - mutex_unlock(&server_start_lock); - CERROR("failed to start MDS: %d\n", rc); - RETURN(rc); - } - } - mutex_unlock(&server_start_lock); - } - - /* If we're an OST, make sure the global OSS is running */ - if (IS_OST(lsi)) { - /* make sure OSS is started */ - mutex_lock(&server_start_lock); - obd = class_name2obd(LUSTRE_OSS_OBDNAME); - if (!obd) { - rc = lustre_start_simple(LUSTRE_OSS_OBDNAME, - LUSTRE_OSS_NAME, - LUSTRE_OSS_OBDNAME"_uuid", - 0, 0, 0, 0); - if (rc) { - mutex_unlock(&server_start_lock); - CERROR("failed to start OSS: %d\n", rc); - RETURN(rc); - } - } - mutex_unlock(&server_start_lock); - } - - /* Set the mgc fs to our server disk. This allows the MGC to - * read and write configs locally, in case it can't talk to the MGS. */ - if (lsi->lsi_srv_mnt) { - rc = server_mgc_set_fs(lsi->lsi_mgc, sb); - if (rc) - GOTO(out_stop_service, rc); - } - - /* Register with MGS */ - rc = server_register_target(lsi); - if (rc) - GOTO(out_mgc, rc); - - /* Let the target look up the mount using the target's name - (we can't pass the sb or mnt through class_process_config.) */ - rc = server_register_mount(lsi->lsi_svname, sb, mnt); - if (rc) - GOTO(out_mgc, rc); - - /* Start targets using the llog named for the target */ - memset(&cfg, 0, sizeof(cfg)); - cfg.cfg_callback = class_config_llog_handler; - rc = lustre_process_log(sb, lsi->lsi_svname, &cfg); - if (rc) { - CERROR("failed to start server %s: %d\n", - lsi->lsi_svname, rc); - /* Do NOT call server_deregister_mount() here. This makes it - * impossible to find mount later in cleanup time and leaves - * @lsi and othder stuff leaked. -umka */ - GOTO(out_mgc, rc); - } - - obd = class_name2obd(lsi->lsi_svname); - if (!obd) { - CERROR("no server named %s was started\n", lsi->lsi_svname); - GOTO(out_mgc, rc = -ENXIO); - } - - if (IS_OST(lsi) || IS_MDT(lsi)) { - rc = lustre_start_lwp(sb); - if (rc) { - CERROR("%s: failed to start LWP: %d\n", - lsi->lsi_svname, rc); - GOTO(out_mgc, rc); - } - } - - server_notify_target(sb, obd); - - /* calculate recovery timeout, do it after lustre_process_log */ - server_calc_timeout(lsi, obd); - - /* log has been fully processed */ - obd_notify(obd, NULL, OBD_NOTIFY_CONFIG, (void *)CONFIG_LOG); - - /* log has been fully processed, let clients connect */ - dev = obd->obd_lu_dev; - if (dev && dev->ld_ops->ldo_prepare) { - rc = lu_env_init(&env, dev->ld_type->ldt_ctx_tags); - if (rc == 0) { - struct lu_context session_ctx; - - lu_context_init(&session_ctx, LCT_SESSION); - session_ctx.lc_thread = NULL; - lu_context_enter(&session_ctx); - env.le_ses = &session_ctx; - - rc = dev->ld_ops->ldo_prepare(&env, NULL, dev); - - lu_env_fini(&env); - lu_context_exit(&session_ctx); - lu_context_fini(&session_ctx); - } - } - - /* abort recovery only on the complete stack: - * many devices can be involved */ - if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_ABORT_RECOV) && - (OBP(obd, iocontrol))) { - obd_iocontrol(OBD_IOC_ABORT_RECOVERY, obd->obd_self_export, 0, - NULL, NULL); - } - -out_mgc: - /* Release the mgc fs for others to use */ - if (lsi->lsi_srv_mnt) - server_mgc_clear_fs(lsi->lsi_mgc); - -out_stop_service: - if (rc != 0) - server_stop_servers(lsi->lsi_flags); - - RETURN(rc); -} - -static int lsi_prepare(struct lustre_sb_info *lsi) -{ - __u32 index; - int rc; - ENTRY; - - LASSERT(lsi); - LASSERT(lsi->lsi_lmd); - - /* The server name is given as a mount line option */ - if (lsi->lsi_lmd->lmd_profile == NULL) { - LCONSOLE_ERROR("Can't determine server name\n"); - RETURN(-EINVAL); - } - - if (strlen(lsi->lsi_lmd->lmd_profile) >= sizeof(lsi->lsi_svname)) - RETURN(-ENAMETOOLONG); - - strcpy(lsi->lsi_svname, lsi->lsi_lmd->lmd_profile); - - /* Determine osd type */ - if (lsi->lsi_lmd->lmd_osd_type != NULL) { - if (strlen(lsi->lsi_lmd->lmd_osd_type) >= - sizeof(lsi->lsi_osd_type)) - RETURN(-ENAMETOOLONG); - - strcpy(lsi->lsi_osd_type, lsi->lsi_lmd->lmd_osd_type); - } else { - strcpy(lsi->lsi_osd_type, LUSTRE_OSD_LDISKFS_NAME); - } - - /* XXX: a temp. solution for components using fsfilt - * to be removed in one of the subsequent patches */ - if (!strcmp(lsi->lsi_lmd->lmd_osd_type, "osd-ldiskfs")) - strcpy(lsi->lsi_fstype, "ldiskfs"); - else - strcpy(lsi->lsi_fstype, lsi->lsi_lmd->lmd_osd_type); - - /* Determine server type */ - rc = server_name2index(lsi->lsi_svname, &index, NULL); - if (rc < 0) { - if (lsi->lsi_lmd->lmd_flags & LMD_FLG_MGS) { - /* Assume we're a bare MGS */ - rc = 0; - lsi->lsi_lmd->lmd_flags |= LMD_FLG_NOSVC; - } else { - LCONSOLE_ERROR("Can't determine server type of '%s'\n", - lsi->lsi_svname); - RETURN(rc); - } - } - lsi->lsi_flags |= rc; - - /* Add mount line flags that used to be in ldd: - * writeconf, mgs, anything else? - */ - lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_WRITECONF) ? - LDD_F_WRITECONF : 0; - lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_VIRGIN) ? - LDD_F_VIRGIN : 0; - lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_UPDATE) ? - LDD_F_UPDATE : 0; - lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_MGS) ? - LDD_F_SV_TYPE_MGS : 0; - lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_NO_PRIMNODE) ? - LDD_F_NO_PRIMNODE : 0; - - RETURN(0); -} - -/*************** server mount ******************/ - -/** Start the shutdown of servers at umount. - */ -static void server_put_super(struct super_block *sb) -{ - struct lustre_sb_info *lsi = s2lsi(sb); - struct obd_device *obd; - char *tmpname, *extraname = NULL; - int tmpname_sz; - int lsiflags = lsi->lsi_flags; - ENTRY; - - LASSERT(IS_SERVER(lsi)); - - tmpname_sz = strlen(lsi->lsi_svname) + 1; - OBD_ALLOC(tmpname, tmpname_sz); - memcpy(tmpname, lsi->lsi_svname, tmpname_sz); - CDEBUG(D_MOUNT, "server put_super %s\n", tmpname); - if (IS_MDT(lsi) && (lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC)) - snprintf(tmpname, tmpname_sz, "MGS"); - - /* disconnect the lwp first to drain off the inflight request */ - if (IS_OST(lsi) || IS_MDT(lsi)) { - int rc; - - rc = lustre_disconnect_lwp(sb); - if (rc && rc != ETIMEDOUT) - CERROR("%s: failed to disconnect lwp. (rc=%d)\n", - tmpname, rc); - } - - /* Stop the target */ - if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC) && - (IS_MDT(lsi) || IS_OST(lsi))) { - struct lustre_profile *lprof = NULL; - - /* tell the mgc to drop the config log */ - lustre_end_log(sb, lsi->lsi_svname, NULL); - - /* COMPAT_146 - profile may get deleted in mgc_cleanup. - If there are any setup/cleanup errors, save the lov - name for safety cleanup later. */ - lprof = class_get_profile(lsi->lsi_svname); - if (lprof && lprof->lp_dt) { - OBD_ALLOC(extraname, strlen(lprof->lp_dt) + 1); - strcpy(extraname, lprof->lp_dt); - } - - obd = class_name2obd(lsi->lsi_svname); - if (obd) { - CDEBUG(D_MOUNT, "stopping %s\n", obd->obd_name); - if (lsiflags & LSI_UMOUNT_FAILOVER) - obd->obd_fail = 1; - /* We can't seem to give an error return code - * to .put_super, so we better make sure we clean up! */ - obd->obd_force = 1; - class_manual_cleanup(obd); - } else { - CERROR("no obd %s\n", lsi->lsi_svname); - server_deregister_mount(lsi->lsi_svname); - } - } - - /* If they wanted the mgs to stop separately from the mdt, they - should have put it on a different device. */ - if (IS_MGS(lsi)) { - /* if MDS start with --nomgs, don't stop MGS then */ - if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOMGS)) - server_stop_mgs(sb); - } - - if (IS_OST(lsi) || IS_MDT(lsi)) { - if (lustre_stop_lwp(sb) < 0) - CERROR("%s: failed to stop lwp!\n", tmpname); - } - - /* Clean the mgc and sb */ - lustre_common_put_super(sb); - - /* wait till all in-progress cleanups are done - * specifically we're interested in ofd cleanup - * as it pins OSS */ - obd_zombie_barrier(); - - /* Stop the servers (MDS, OSS) if no longer needed. We must wait - until the target is really gone so that our type refcount check - is right. */ - server_stop_servers(lsiflags); - - /* In case of startup or cleanup err, stop related obds */ - if (extraname) { - obd = class_name2obd(extraname); - if (obd) { - CWARN("Cleaning orphaned obd %s\n", extraname); - obd->obd_force = 1; - class_manual_cleanup(obd); - } - OBD_FREE(extraname, strlen(extraname) + 1); - } - - LCONSOLE_WARN("server umount %s complete\n", tmpname); - OBD_FREE(tmpname, tmpname_sz); - EXIT; -} - -/** Called only for 'umount -f' - */ -static void server_umount_begin(struct super_block *sb) -{ - struct lustre_sb_info *lsi = s2lsi(sb); - ENTRY; - - CDEBUG(D_MOUNT, "umount -f\n"); - /* umount = failover - umount -f = force - no third way to do non-force, non-failover */ - lsi->lsi_flags &= ~LSI_UMOUNT_FAILOVER; - EXIT; -} - -static int server_statfs(struct dentry *dentry, struct kstatfs *buf) -{ - struct super_block *sb = dentry->d_sb; - struct lustre_sb_info *lsi = s2lsi(sb); - struct obd_statfs statfs; - int rc; - ENTRY; - - if (lsi->lsi_dt_dev) { - rc = dt_statfs(NULL, lsi->lsi_dt_dev, &statfs); - if (rc == 0) { - statfs_unpack(buf, &statfs); - buf->f_type = sb->s_magic; - RETURN(0); - } - } - - /* just return 0 */ - buf->f_type = sb->s_magic; - buf->f_bsize = sb->s_blocksize; - buf->f_blocks = 1; - buf->f_bfree = 0; - buf->f_bavail = 0; - buf->f_files = 1; - buf->f_ffree = 0; - buf->f_namelen = NAME_MAX; - RETURN(0); -} - -/** The operations we support directly on the superblock: - * mount, umount, and df. - */ -static struct super_operations server_ops = { - .put_super = server_put_super, - .umount_begin = server_umount_begin, /* umount -f */ - .statfs = server_statfs, -}; - -#define log2(n) ffz(~(n)) -#define LUSTRE_SUPER_MAGIC 0x0BD00BD1 - -static int server_fill_super_common(struct super_block *sb) -{ - struct inode *root = 0; - ENTRY; - - CDEBUG(D_MOUNT, "Server sb, dev=%d\n", (int)sb->s_dev); - - sb->s_blocksize = 4096; - sb->s_blocksize_bits = log2(sb->s_blocksize); - sb->s_magic = LUSTRE_SUPER_MAGIC; - sb->s_maxbytes = 0; /* we don't allow file IO on server mountpoints */ - sb->s_flags |= MS_RDONLY; - sb->s_op = &server_ops; - - root = new_inode(sb); - if (!root) { - CERROR("Can't make root inode\n"); - RETURN(-EIO); - } - - /* returns -EIO for every operation */ - /* make_bad_inode(root); -- badness - can't umount */ - /* apparently we need to be a directory for the mount to finish */ - root->i_mode = S_IFDIR; - - sb->s_root = d_make_root(root); - if (!sb->s_root) { - CERROR("%s: can't make root dentry\n", sb->s_id); - RETURN(-EIO); - } - - RETURN(0); -} - -static int osd_start(struct lustre_sb_info *lsi, unsigned long mflags) -{ - struct lustre_mount_data *lmd = lsi->lsi_lmd; - struct obd_device *obd; - struct dt_device_param p; - char flagstr[16]; - int rc; - ENTRY; - - CDEBUG(D_MOUNT, - "Attempting to start %s, type=%s, lsifl=%x, mountfl=%lx\n", - lsi->lsi_svname, lsi->lsi_osd_type, lsi->lsi_flags, mflags); - - sprintf(lsi->lsi_osd_obdname, "%s-osd", lsi->lsi_svname); - strcpy(lsi->lsi_osd_uuid, lsi->lsi_osd_obdname); - strcat(lsi->lsi_osd_uuid, "_UUID"); - sprintf(flagstr, "%lu:%lu", mflags, (unsigned long) lmd->lmd_flags); - - obd = class_name2obd(lsi->lsi_osd_obdname); - if (obd == NULL) { - rc = lustre_start_simple(lsi->lsi_osd_obdname, - lsi->lsi_osd_type, - lsi->lsi_osd_uuid, lmd->lmd_dev, - flagstr, lsi->lsi_lmd->lmd_opts, - lsi->lsi_svname); - if (rc) - GOTO(out, rc); - obd = class_name2obd(lsi->lsi_osd_obdname); - LASSERT(obd); - } - - rc = obd_connect(NULL, &lsi->lsi_osd_exp, - obd, &obd->obd_uuid, NULL, NULL); - if (rc) { - obd->obd_force = 1; - class_manual_cleanup(obd); - lsi->lsi_dt_dev = NULL; - } - - /* XXX: to keep support old components relying on lsi_srv_mnt - * we get this info from OSD just started */ - LASSERT(obd->obd_lu_dev); - lsi->lsi_dt_dev = lu2dt_dev(obd->obd_lu_dev); - LASSERT(lsi->lsi_dt_dev); - - dt_conf_get(NULL, lsi->lsi_dt_dev, &p); - - lsi->lsi_srv_mnt = p.ddp_mnt; - -out: - RETURN(rc); -} - -/** Fill in the superblock info for a Lustre server. - * Mount the device with the correct options. - * Read the on-disk config file. - * Start the services. - */ -int server_fill_super(struct super_block *sb) -{ - struct lustre_sb_info *lsi = s2lsi(sb); - int rc; - ENTRY; - - rc = lsi_prepare(lsi); - if (rc) - RETURN(rc); - - /* Start low level OSD */ - rc = osd_start(lsi, sb->s_flags); - if (rc) { - CERROR("Unable to start osd on %s: %d\n", - lsi->lsi_lmd->lmd_dev, rc); - lustre_put_lsi(sb); - RETURN(rc); - } - - CDEBUG(D_MOUNT, "Found service %s on device %s\n", - lsi->lsi_svname, lsi->lsi_lmd->lmd_dev); - - if (class_name2obd(lsi->lsi_svname)) { - LCONSOLE_ERROR_MSG(0x161, "The target named %s is already " - "running. Double-mount may have compromised" - " the disk journal.\n", - lsi->lsi_svname); - lustre_put_lsi(sb); - RETURN(-EALREADY); - } - - /* Start MGS before MGC */ - if (IS_MGS(lsi) && !(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOMGS)) { - rc = server_start_mgs(sb); - if (rc) - GOTO(out_mnt, rc); - } - - /* Start MGC before servers */ - rc = lustre_start_mgc(sb); - if (rc) - GOTO(out_mnt, rc); - - /* Set up all obd devices for service */ - if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC) && - (IS_OST(lsi) || IS_MDT(lsi))) { - rc = server_start_targets(sb, lsi->lsi_srv_mnt); - if (rc < 0) { - CERROR("Unable to start targets: %d\n", rc); - GOTO(out_mnt, rc); - } - /* FIXME overmount client here, or can we just start a - * client log and client_fill_super on this sb? We - * need to make sure server_put_super gets called too - * - ll_put_super calls lustre_common_put_super; check - * there for LSI_SERVER flag, call s_p_s if so. - * - * Probably should start client from new thread so we - * can return. Client will not finish until all - * servers are connected. Note - MGS-only server does - * NOT get a client, since there is no lustre fs - * associated - the MGS is for all lustre fs's */ - } - - rc = server_fill_super_common(sb); - if (rc) - GOTO(out_mnt, rc); - - RETURN(0); -out_mnt: - /* We jump here in case of failure while starting targets or MGS. - * In this case we can't just put @mnt and have to do real cleanup - * with stoping targets, etc. */ - server_put_super(sb); - return rc; -} - -/* - * Calculate timeout value for a target. - */ -void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd) -{ - struct lustre_mount_data *lmd; - int soft = 0; - int hard = 0; - int factor = 0; - bool has_ir = !!(lsi->lsi_flags & LDD_F_IR_CAPABLE); - int min = OBD_RECOVERY_TIME_MIN; - - LASSERT(IS_SERVER(lsi)); - - lmd = lsi->lsi_lmd; - if (lmd) { - soft = lmd->lmd_recovery_time_soft; - hard = lmd->lmd_recovery_time_hard; - has_ir = has_ir && !(lmd->lmd_flags & LMD_FLG_NOIR); - obd->obd_no_ir = !has_ir; - } - - if (soft == 0) - soft = OBD_RECOVERY_TIME_SOFT; - if (hard == 0) - hard = OBD_RECOVERY_TIME_HARD; - - /* target may have ir_factor configured. */ - factor = OBD_IR_FACTOR_DEFAULT; - if (obd->obd_recovery_ir_factor) - factor = obd->obd_recovery_ir_factor; - - if (has_ir) { - int new_soft = soft; - int new_hard = hard; - - /* adjust timeout value by imperative recovery */ - - new_soft = (soft * factor) / OBD_IR_FACTOR_MAX; - new_hard = (hard * factor) / OBD_IR_FACTOR_MAX; - - /* make sure the timeout is not too short */ - new_soft = max(min, new_soft); - new_hard = max(new_soft, new_hard); - - LCONSOLE_INFO("%s: Imperative Recovery enabled, recovery " - "window shrunk from %d-%d down to %d-%d\n", - obd->obd_name, soft, hard, new_soft, new_hard); - - soft = new_soft; - hard = new_hard; - } - - /* we're done */ - obd->obd_recovery_timeout = max(obd->obd_recovery_timeout, soft); - obd->obd_recovery_time_hard = hard; - obd->obd_recovery_ir_factor = factor; -} -EXPORT_SYMBOL(server_calc_timeout);