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Commit 9c110d71 authored by Peng Tao's avatar Peng Tao Committed by Greg Kroah-Hartman
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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: default avatarPeng Tao <tao.peng@emc.com>
Signed-off-by: default avatarAndreas Dilger <andreas.dilger@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 423e118c
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drivers/staging/lustre/lustre/include/obd.h
View file @ 9c110d71
......@@ -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).
......
drivers/staging/lustre/lustre/obdclass/obd_mount_server.c deleted 100644 → 0
View file @ 423e118c
/*
* 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 <nathan@clusterfs.com>
*/
#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 <obd.h>
#include <lvfs.h>
#include <lustre_fsfilt.h>
#include <obd_class.h>
#include <lustre/lustre_user.h>
#include <linux/version.h>
#include <lustre_log.h>
#include <lustre_disk.h>
#include <lustre_param.h>
/*********** 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);
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