* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* lustre/obdclass/obd_mount.c
*
- * Client/server mount routines
+ * Client mount routines
*
* Author: Nathan Rutman <nathan@clusterfs.com>
*/
#define DEBUG_SUBSYSTEM S_CLASS
-#define D_MOUNT D_SUPER|D_CONFIG /*|D_WARNING */
+#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>
-#ifdef HAVE_KERNEL_LOCKED
-#include <linux/smp_lock.h>
-#endif
static int (*client_fill_super)(struct super_block *sb,
- struct vfsmount *mnt) = NULL;
-static void (*kill_super_cb)(struct super_block *sb) = NULL;
-
-/*********** mount lookup *********/
-
-CFS_DEFINE_MUTEX(lustre_mount_info_lock);
-static CFS_LIST_HEAD(server_mount_info_list);
-
-static struct lustre_mount_info *server_find_mount(const char *name)
-{
- cfs_list_t *tmp;
- struct lustre_mount_info *lmi;
- ENTRY;
-
- cfs_list_for_each(tmp, &server_mount_info_list) {
- lmi = cfs_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);
-
- cfs_mutex_lock(&lustre_mount_info_lock);
-
- if (server_find_mount(name)) {
- cfs_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;
- cfs_list_add(&lmi->lmi_list_chain, &server_mount_info_list);
-
- cfs_mutex_unlock(&lustre_mount_info_lock);
-
- CDEBUG(D_MOUNT, "reg_mnt %p from %s, vfscount=%d\n",
- lmi->lmi_mnt, name,
- lmi->lmi_mnt ? mnt_get_count(lmi->lmi_mnt) : -1);
-
- RETURN(0);
-}
-
-/* when an obd no longer needs a mount */
-static int server_deregister_mount(const char *name)
-{
- struct lustre_mount_info *lmi;
- ENTRY;
-
- cfs_mutex_lock(&lustre_mount_info_lock);
- lmi = server_find_mount(name);
- if (!lmi) {
- cfs_mutex_unlock(&lustre_mount_info_lock);
- CERROR("%s not registered\n", name);
- RETURN(-ENOENT);
- }
-
- CDEBUG(D_MOUNT, "dereg_mnt %p from %s, vfscount=%d\n",
- lmi->lmi_mnt, name,
- lmi->lmi_mnt ? mnt_get_count(lmi->lmi_mnt) : -1);
-
- OBD_FREE(lmi->lmi_name, strlen(lmi->lmi_name) + 1);
- cfs_list_del(&lmi->lmi_list_chain);
- OBD_FREE(lmi, sizeof(*lmi));
- cfs_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;
-
- cfs_mutex_lock(&lustre_mount_info_lock);
- lmi = server_find_mount(name);
- cfs_mutex_unlock(&lustre_mount_info_lock);
- if (!lmi) {
- CERROR("Can't find mount for %s\n", name);
- RETURN(NULL);
- }
- lsi = s2lsi(lmi->lmi_sb);
-
- cfs_atomic_inc(&lsi->lsi_mounts);
-
- CDEBUG(D_MOUNT, "get_mnt %p from %s, refs=%d, vfscount=%d\n",
- lmi->lmi_mnt, name, cfs_atomic_read(&lsi->lsi_mounts),
- lmi->lmi_mnt ? mnt_get_count(lmi->lmi_mnt) - 1 : -1);
-
- 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;
-
- cfs_mutex_lock(&lustre_mount_info_lock);
- lmi = server_find_mount(name);
- cfs_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);
-
-static int lustre_put_lsi(struct super_block *sb);
-
-/* 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;
- int count = 0;
- ENTRY;
-
- cfs_mutex_lock(&lustre_mount_info_lock);
- lmi = server_find_mount(name);
- cfs_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, vfscount=%d\n",
- lmi->lmi_mnt, name, cfs_atomic_read(&lsi->lsi_mounts), count);
-
- if (lustre_put_lsi(lmi->lmi_sb)) {
- CDEBUG(D_MOUNT, "Last put of mnt %p from %s, vfscount=%d\n",
- lmi->lmi_mnt, name, count);
- /* last mount is the One True Mount */
- if (count > 1)
- CERROR("%s: mount busy, vfscount=%d!\n", name, count);
- }
-
- /* this obd should never need the mount again */
- server_deregister_mount(name);
-
- RETURN(0);
-}
-EXPORT_SYMBOL(server_put_mount);
+ struct vfsmount *mnt);
-/* 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);
+static void (*kill_super_cb)(struct super_block *sb);
/**************** config llog ********************/
"client and the MGS are running compatible "
"versions of Lustre.\n",
mgc->obd_name, logname, rc);
-
- if (rc)
+ else if (rc != 0)
LCONSOLE_ERROR_MSG(0x15c, "%s: The configuration from log '%s' "
"failed (%d). This may be the result of "
"communication errors between this node and "
/** Call class_attach and class_setup. These methods in turn call
* obd type-specific methods.
*/
-static int lustre_start_simple(char *obdname, char *type, char *uuid,
- char *s1, char *s2, char *s3, char *s4)
+int lustre_start_simple(char *obdname, char *type, char *uuid,
+ char *s1, char *s2, char *s3, char *s4)
{
int rc;
CDEBUG(D_MOUNT, "Starting obd %s (typ=%s)\n", obdname, type);
rc = do_lcfg(obdname, 0, LCFG_ATTACH, type, uuid, 0, 0);
if (rc) {
CERROR("%s attach error %d\n", obdname, rc);
- return(rc);
+ return rc;
}
rc = do_lcfg(obdname, 0, LCFG_SETUP, s1, s2, s3, s4);
if (rc) {
return rc;
}
-/* 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;
- LASSERT(mnt);
-
- /* 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, 0, 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);
-}
-
-CFS_DEFINE_MUTEX(mgc_start_lock);
+DEFINE_MUTEX(mgc_start_lock);
/** Set up a mgc obd to process startup logs
*
*
* \retval 0 success, otherwise error code
*/
-static int lustre_start_mgc(struct super_block *sb)
+int lustre_start_mgc(struct super_block *sb)
{
struct obd_connect_data *data = NULL;
struct lustre_sb_info *lsi = s2lsi(sb);
RETURN(-EINVAL);
}
- cfs_mutex_lock(&mgc_start_lock);
+ mutex_lock(&mgc_start_lock);
len = strlen(LUSTRE_MGC_OBDNAME) + strlen(libcfs_nid2str(nid)) + 1;
OBD_ALLOC(mgcname, len);
GOTO(out_free, rc);
/* Re-using an existing MGC */
- cfs_atomic_inc(&obd->u.cli.cl_mgc_refcount);
+ atomic_inc(&obd->u.cli.cl_mgc_refcount);
/* IR compatibility check, only for clients */
if (lmd_is_client(lsi->lsi_lmd)) {
sprintf(niduuid, "%s_%x", mgcname, i);
if (IS_SERVER(lsi)) {
ptr = lsi->lsi_lmd->lmd_mgs;
+ CDEBUG(D_MOUNT, "mgs nids %s.\n", ptr);
if (IS_MGS(lsi)) {
- /* Use local nids (including LO) */
- lnet_process_id_t id;
- while ((rc = LNetGetId(i++, &id)) != -ENOENT) {
- rc = do_lcfg(mgcname, id.nid,
- LCFG_ADD_UUID, niduuid, 0,0,0);
- }
- } else {
- /* Use mgsnode= nids */
+ /* Use local nids (including LO) */
+ lnet_process_id_t id;
+ while ((rc = LNetGetId(i++, &id)) != -ENOENT) {
+ rc = do_lcfg(mgcname, id.nid, LCFG_ADD_UUID,
+ niduuid, 0, 0, 0);
+ }
+ } else {
+ /* Use mgsnode= nids */
/* mount -o mgsnode=nid */
if (lsi->lsi_lmd->lmd_mgs) {
ptr = lsi->lsi_lmd->lmd_mgs;
} else if (class_find_param(ptr, PARAM_MGSNODE,
&ptr) != 0) {
- CERROR("No MGS nids given.\n");
- GOTO(out_free, rc = -EINVAL);
- }
- while (class_parse_nid(ptr, &nid, &ptr) == 0) {
- rc = do_lcfg(mgcname, nid,
- LCFG_ADD_UUID, niduuid, 0,0,0);
- i++;
- }
- }
+ CERROR("No MGS nids given.\n");
+ GOTO(out_free, rc = -EINVAL);
+ }
+ /*
+ * LU-3829.
+ * Here we only take the first mgsnid as its primary
+ * serving mgs node, the rest mgsnid will be taken as
+ * failover mgs node, otherwise they would be takens
+ * as multiple nids of a single mgs node.
+ */
+ while (class_parse_nid(ptr, &nid, &ptr) == 0) {
+ rc = do_lcfg(mgcname, nid, LCFG_ADD_UUID,
+ niduuid, 0, 0, 0);
+ if (rc == 0) {
+ i = 1;
+ break;
+ }
+ }
+ }
} else { /* client */
/* Use nids from mount line: uml1,1@elan:uml2,2@elan:/lustre */
ptr = lsi->lsi_lmd->lmd_dev;
while (class_parse_nid(ptr, &nid, &ptr) == 0) {
- rc = do_lcfg(mgcname, nid,
- LCFG_ADD_UUID, niduuid, 0,0,0);
- i++;
+ rc = do_lcfg(mgcname, nid, LCFG_ADD_UUID,
+ niduuid, 0, 0, 0);
+ if (rc == 0)
+ ++i;
/* Stop at the first failover nid */
if (*ptr == ':')
break;
/* Start the MGC */
rc = lustre_start_simple(mgcname, LUSTRE_MGC_NAME,
- (char *)uuid->uuid, LUSTRE_MGS_OBDNAME,
+ (char *)uuid->uuid, LUSTRE_MGS_OBDNAME,
niduuid, 0, 0);
OBD_FREE_PTR(uuid);
if (rc)
i = 1;
while (ptr && ((*ptr == ':' ||
class_find_param(ptr, PARAM_MGSNODE, &ptr) == 0))) {
- /* New failover node */
- sprintf(niduuid, "%s_%x", mgcname, i);
- j = 0;
- while (class_parse_nid(ptr, &nid, &ptr) == 0) {
- j++;
- rc = do_lcfg(mgcname, nid,
- LCFG_ADD_UUID, niduuid, 0,0,0);
- if (*ptr == ':')
- break;
- }
- if (j > 0) {
- rc = do_lcfg(mgcname, 0, LCFG_ADD_CONN,
- niduuid, 0, 0, 0);
- i++;
+ /* New failover node */
+ sprintf(niduuid, "%s_%x", mgcname, i);
+ j = 0;
+ while (class_parse_nid_quiet(ptr, &nid, &ptr) == 0) {
+ rc = do_lcfg(mgcname, nid, LCFG_ADD_UUID,
+ niduuid, 0, 0, 0);
+ if (rc == 0)
+ ++j;
+ if (*ptr == ':')
+ break;
+ }
+ if (j > 0) {
+ rc = do_lcfg(mgcname, 0, LCFG_ADD_CONN,
+ niduuid, 0, 0, 0);
+ if (rc == 0)
+ ++i;
} else {
/* at ":/fsname" */
break;
/* Keep a refcount of servers/clients who started with "mount",
so we know when we can get rid of the mgc. */
- cfs_atomic_set(&obd->u.cli.cl_mgc_refcount, 1);
+ atomic_set(&obd->u.cli.cl_mgc_refcount, 1);
/* Try all connections, but only once. */
recov_bk = 1;
/* We connect to the MGS at setup, and don't disconnect until cleanup */
data->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_AT |
OBD_CONNECT_FULL20 | OBD_CONNECT_IMP_RECOV |
- OBD_CONNECT_MNE_SWAB;
+ OBD_CONNECT_LVB_TYPE;
+
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 2, 50, 0)
+ data->ocd_connect_flags |= OBD_CONNECT_MNE_SWAB;
+#else
+#warning "LU-1644: Remove old OBD_CONNECT_MNE_SWAB fixup and imp_need_mne_swab"
+#endif
+
if (lmd_is_client(lsi->lsi_lmd) &&
lsi->lsi_lmd->lmd_flags & LMD_FLG_NOIR)
data->ocd_connect_flags &= ~OBD_CONNECT_IMP_RECOV;
to the same mgc.*/
lsi->lsi_mgc = obd;
out_free:
- cfs_mutex_unlock(&mgc_start_lock);
+ mutex_unlock(&mgc_start_lock);
if (data)
OBD_FREE_PTR(data);
static int lustre_stop_mgc(struct super_block *sb)
{
struct lustre_sb_info *lsi = s2lsi(sb);
- struct obd_device *obd;
- char *niduuid = 0, *ptr = 0;
- int i, rc = 0, len = 0;
- ENTRY;
-
- if (!lsi)
- RETURN(-ENOENT);
- obd = lsi->lsi_mgc;
- if (!obd)
- RETURN(-ENOENT);
- lsi->lsi_mgc = NULL;
-
- cfs_mutex_lock(&mgc_start_lock);
- LASSERT(cfs_atomic_read(&obd->u.cli.cl_mgc_refcount) > 0);
- if (!cfs_atomic_dec_and_test(&obd->u.cli.cl_mgc_refcount)) {
- /* This is not fatal, every client that stops
- will call in here. */
- CDEBUG(D_MOUNT, "mgc still has %d references.\n",
- cfs_atomic_read(&obd->u.cli.cl_mgc_refcount));
- GOTO(out, rc = -EBUSY);
- }
-
- /* The MGC has no recoverable data in any case.
- * force shotdown set in umount_begin */
- obd->obd_no_recov = 1;
-
- if (obd->u.cli.cl_mgc_mgsexp) {
- /* An error is not fatal, if we are unable to send the
- disconnect mgs ping evictor cleans up the export */
- rc = obd_disconnect(obd->u.cli.cl_mgc_mgsexp);
- if (rc)
- CDEBUG(D_MOUNT, "disconnect failed %d\n", rc);
- }
-
- /* Save the obdname for cleaning the nid uuids, which are
- obdname_XX */
- len = strlen(obd->obd_name) + 6;
- OBD_ALLOC(niduuid, len);
- if (niduuid) {
- strcpy(niduuid, obd->obd_name);
- ptr = niduuid + strlen(niduuid);
- }
-
- rc = class_manual_cleanup(obd);
- if (rc)
- GOTO(out, rc);
-
- /* Clean the nid uuids */
- if (!niduuid)
- GOTO(out, rc = -ENOMEM);
-
- for (i = 0; i < lsi->lsi_lmd->lmd_mgs_failnodes; i++) {
- sprintf(ptr, "_%x", i);
- rc = do_lcfg(LUSTRE_MGC_OBDNAME, 0, LCFG_DEL_UUID,
- niduuid, 0, 0, 0);
- if (rc)
- CERROR("del MDC UUID %s failed: rc = %d\n",
- niduuid, rc);
- }
-out:
- if (niduuid)
- OBD_FREE(niduuid, len);
-
- /* class_import_put will get rid of the additional connections */
- cfs_mutex_unlock(&mgc_start_lock);
- 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) {
- 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);
-}
-
-CFS_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;
-
- cfs_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))) {
- /*FIXME pre-rename, should eventually be LUSTRE_MDT_NAME*/
- type = class_search_type(LUSTRE_MDS_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))) {
- type = class_search_type(LUSTRE_OST_NAME);
- }
-
- if (obd && (!type || !type->typ_refcnt)) {
- int err;
- obd->obd_force = 1;
- /* obd_fail doesn't mean much on a server obd */
- err = class_manual_cleanup(obd);
- if (!rc)
- rc = err;
- }
-
- cfs_mutex_unlock(&server_start_lock);
-
- RETURN(rc);
-}
-
-int server_mti_print(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);
-}
-
-/** Get the fsname ("lustre") from the server name ("lustre-OST003F").
- * @param [in] svname server name including type and index
- * @param [out] fsname Buffer to copy filesystem name prefix into.
- * Must have at least 'strlen(fsname) + 1' chars.
- * @param [out] endptr if endptr isn't NULL it is set to end of fsname
- * rc < 0 on error
- */
-static int server_name2fsname(char *svname, char *fsname, char **endptr)
-{
- char *p;
-
- p = strstr(svname, "-OST");
- if (p == NULL)
- p = strstr(svname, "-MDT");
- if (p == NULL)
- return -1;
-
- if (fsname) {
- strncpy(fsname, svname, p - svname);
- fsname[p - svname] = '\0';
- }
-
- if (endptr != NULL)
- *endptr = p;
-
- return 0;
-}
-
-/**
- * Get service name (svname) from string
- * rc < 0 on error
- * if endptr isn't NULL it is set to end of fsname *
- */
-int server_name2svname(char *label, char *svname, char **endptr)
-{
- int rc;
- char *dash;
-
- /* We use server_name2fsname() just for parsing */
- rc = server_name2fsname(label, NULL, &dash);
- if (rc != 0)
- return rc;
-
- if (*dash != '-')
- return -1;
-
- strncpy(svname, dash + 1, MTI_NAME_MAXLEN);
-
- return 0;
-}
-EXPORT_SYMBOL(server_name2svname);
-
-
-/* Get the index from the obd name.
- rc = server type, or
- rc < 0 on error
- if endptr isn't NULL it is set to end of name */
-int server_name2index(char *svname, __u32 *idx, char **endptr)
-{
- unsigned long index;
- int rc;
- char *dash;
-
- /* We use server_name2fsname() just for parsing */
- rc = server_name2fsname(svname, NULL, &dash);
- if (rc != 0)
- return rc;
-
- if (*dash != '-')
- return -EINVAL;
-
- dash++;
-
- if (strncmp(dash, "MDT", 3) == 0)
- rc = LDD_F_SV_TYPE_MDT;
- else if (strncmp(dash, "OST", 3) == 0)
- rc = LDD_F_SV_TYPE_OST;
- else
- return -EINVAL;
-
- dash += 3;
-
- if (strcmp(dash, "all") == 0)
- return rc | LDD_F_SV_ALL;
-
- index = simple_strtoul(dash, endptr, 16);
- *idx = index;
-
- return rc;
-}
-EXPORT_SYMBOL(server_name2index);
-
-/* 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;
- ENTRY;
-
- if (!IS_SERVER(lsi))
- RETURN(-EINVAL);
-
- strncpy(mti->mti_svname, lsi->lsi_svname, sizeof(mti->mti_svname));
-
- 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;
- mti->mti_flags |= LDD_F_UPDATE;
- strncpy(mti->mti_params, lsi->lsi_lmd->lmd_params,
- sizeof(mti->mti_params));
- 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,
- "The MGS is refusing to allow this "
- "server (%s) to start. Please see messages"
- " on the MGS node.\n", lsi->lsi_svname);
- } else if (writeconf) {
- LCONSOLE_ERROR_MSG(0x15f,
- "Communication to the MGS return error %d. "
- "Is the MGS running?\n", rc);
- } else {
- CERROR("Cannot talk to the MGS: %d, not fatal\n", 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;
- int rc;
+ struct obd_device *obd;
+ char *niduuid = 0, *ptr = 0;
+ int i, rc = 0, len = 0;
ENTRY;
- CDEBUG(D_MOUNT, "starting target %s\n", lsi->lsi_svname);
-
-#if 0
- /* If we're an MDT, make sure the global MDS is running */
- if (lsi->lsi_ldd->ldd_flags & LDD_F_SV_TYPE_MDT) {
- /* make sure the MDS is started */
- cfs_mutex_lock(&server_start_lock);
- obd = class_name2obd(LUSTRE_MDS_OBDNAME);
- if (!obd) {
- rc = lustre_start_simple(LUSTRE_MDS_OBDNAME,
- /* FIXME pre-rename, should eventually be LUSTRE_MDS_NAME */
- LUSTRE_MDT_NAME,
- LUSTRE_MDS_OBDNAME"_uuid",
- 0, 0);
- if (rc) {
- cfs_mutex_unlock(&server_start_lock);
- CERROR("failed to start MDS: %d\n", rc);
- RETURN(rc);
- }
- }
- cfs_mutex_unlock(&server_start_lock);
- }
-#endif
+ if (!lsi)
+ RETURN(-ENOENT);
+ obd = lsi->lsi_mgc;
+ if (!obd)
+ RETURN(-ENOENT);
+ lsi->lsi_mgc = NULL;
- /* If we're an OST, make sure the global OSS is running */
- if (IS_OST(lsi)) {
- /* make sure OSS is started */
- cfs_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) {
- cfs_mutex_unlock(&server_start_lock);
- CERROR("failed to start OSS: %d\n", rc);
- RETURN(rc);
- }
- }
- cfs_mutex_unlock(&server_start_lock);
+ mutex_lock(&mgc_start_lock);
+ LASSERT(atomic_read(&obd->u.cli.cl_mgc_refcount) > 0);
+ if (!atomic_dec_and_test(&obd->u.cli.cl_mgc_refcount)) {
+ /* This is not fatal, every client that stops
+ will call in here. */
+ CDEBUG(D_MOUNT, "mgc still has %d references.\n",
+ atomic_read(&obd->u.cli.cl_mgc_refcount));
+ GOTO(out, rc = -EBUSY);
}
- /* 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)
- RETURN(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));
- 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);
- }
+ /* The MGC has no recoverable data in any case.
+ * force shotdown set in umount_begin */
+ obd->obd_no_recov = 1;
-out_mgc:
- /* Release the mgc fs for others to use */
- if (lsi->lsi_srv_mnt)
- server_mgc_clear_fs(lsi->lsi_mgc);
-
- if (!rc) {
- obd = class_name2obd(lsi->lsi_svname);
- if (!obd) {
- CERROR("no server named %s was started\n",
- lsi->lsi_svname);
- RETURN(-ENXIO);
- }
+ if (obd->u.cli.cl_mgc_mgsexp) {
+ /* An error is not fatal, if we are unable to send the
+ disconnect mgs ping evictor cleans up the export */
+ rc = obd_disconnect(obd->u.cli.cl_mgc_mgsexp);
+ if (rc)
+ CDEBUG(D_MOUNT, "disconnect failed %d\n", rc);
+ }
- 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);
- }
+ /* Save the obdname for cleaning the nid uuids, which are
+ obdname_XX */
+ len = strlen(obd->obd_name) + 6;
+ OBD_ALLOC(niduuid, len);
+ if (niduuid) {
+ strcpy(niduuid, obd->obd_name);
+ ptr = niduuid + strlen(niduuid);
+ }
- server_notify_target(sb, obd);
+ rc = class_manual_cleanup(obd);
+ if (rc)
+ GOTO(out, rc);
- /* calculate recovery timeout, do it after lustre_process_log */
- server_calc_timeout(lsi, obd);
+ /* Clean the nid uuids */
+ if (!niduuid)
+ GOTO(out, rc = -ENOMEM);
- /* log has been fully processed */
- obd_notify(obd, NULL, OBD_NOTIFY_CONFIG, (void *)CONFIG_LOG);
+ for (i = 0; i < lsi->lsi_lmd->lmd_mgs_failnodes; i++) {
+ sprintf(ptr, "_%x", i);
+ rc = do_lcfg(LUSTRE_MGC_OBDNAME, 0, LCFG_DEL_UUID,
+ niduuid, 0, 0, 0);
+ if (rc)
+ CERROR("del MDC UUID %s failed: rc = %d\n",
+ niduuid, rc);
}
+out:
+ if (niduuid)
+ OBD_FREE(niduuid, len);
+ /* class_import_put will get rid of the additional connections */
+ mutex_unlock(&mgc_start_lock);
RETURN(rc);
}
lsi->lsi_lmd->lmd_recovery_time_hard = 0;
s2lsi_nocast(sb) = lsi;
/* we take 1 extra ref for our setup */
- cfs_atomic_set(&lsi->lsi_mounts, 1);
+ atomic_set(&lsi->lsi_mounts, 1);
/* Default umount style */
lsi->lsi_flags = LSI_UMOUNT_FAILOVER;
CDEBUG(D_MOUNT, "Freeing lsi %p\n", lsi);
/* someone didn't call server_put_mount. */
- LASSERT(cfs_atomic_read(&lsi->lsi_mounts) == 0);
+ LASSERT(atomic_read(&lsi->lsi_mounts) == 0);
if (lsi->lsi_lmd != NULL) {
if (lsi->lsi_lmd->lmd_dev != NULL)
/* The lsi has one reference for every server that is using the disk -
e.g. MDT, MGS, and potentially MGC */
-static int lustre_put_lsi(struct super_block *sb)
+int lustre_put_lsi(struct super_block *sb)
{
struct lustre_sb_info *lsi = s2lsi(sb);
ENTRY;
LASSERT(lsi != NULL);
- CDEBUG(D_MOUNT, "put %p %d\n", sb, cfs_atomic_read(&lsi->lsi_mounts));
- if (cfs_atomic_dec_and_test(&lsi->lsi_mounts)) {
+ CDEBUG(D_MOUNT, "put %p %d\n", sb, atomic_read(&lsi->lsi_mounts));
+ if (atomic_dec_and_test(&lsi->lsi_mounts)) {
if (IS_SERVER(lsi) && lsi->lsi_osd_exp) {
+ lu_device_put(&lsi->lsi_dt_dev->dd_lu_dev);
+ lsi->lsi_osd_exp->exp_obd->obd_lvfs_ctxt.dt = NULL;
+ lsi->lsi_dt_dev = NULL;
obd_disconnect(lsi->lsi_osd_exp);
/* wait till OSD is gone */
obd_zombie_barrier();
RETURN(0);
}
-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, iam, 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_MGS) ?
- LDD_F_SV_TYPE_MGS : 0;
- lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_IAM) ?
- LDD_F_IAM_DIR : 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.
+/*** SERVER NAME ***
+ * <FSNAME><SEPERATOR><TYPE><INDEX>
+ * FSNAME is between 1 and 8 characters (inclusive).
+ * Excluded characters are '/' and ':'
+ * SEPERATOR is either ':' or '-'
+ * TYPE: "OST", "MDT", etc.
+ * INDEX: Hex representation of the index
*/
-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");
-
- /* 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 (lsi->lsi_flags & 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);
- }
-
- /* 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'
+/** Get the fsname ("lustre") from the server name ("lustre-OST003F").
+ * @param [in] svname server name including type and index
+ * @param [out] fsname Buffer to copy filesystem name prefix into.
+ * Must have at least 'strlen(fsname) + 1' chars.
+ * @param [out] endptr if endptr isn't NULL it is set to end of fsname
+ * rc < 0 on error
*/
-#ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
-static void server_umount_begin(struct vfsmount *vfsmnt, int flags)
-{
- struct super_block *sb = vfsmnt->mnt_sb;
-#else
-static void server_umount_begin(struct super_block *sb)
+int server_name2fsname(const char *svname, char *fsname, const char **endptr)
{
-#endif
- struct lustre_sb_info *lsi = s2lsi(sb);
- ENTRY;
-
-#ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
- if (!(flags & MNT_FORCE)) {
- EXIT;
- return;
- }
-#endif
-
- 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;
-}
+ const char *dash;
-static int server_statfs (struct dentry *dentry, cfs_kstatfs_t *buf)
-{
- struct super_block *sb = dentry->d_sb;
- struct vfsmount *mnt = s2lsi(sb)->lsi_srv_mnt;
- ENTRY;
+ dash = svname + strnlen(svname, 8); /* max fsname length is 8 */
+ for (; dash > svname && *dash != '-' && *dash != ':'; dash--)
+ ;
+ if (dash == svname)
+ return -EINVAL;
- if (mnt && mnt->mnt_sb && mnt->mnt_sb->s_op->statfs) {
- int rc = mnt->mnt_sb->s_op->statfs(mnt->mnt_root, buf);
- if (!rc) {
- buf->f_type = sb->s_magic;
- RETURN(0);
- }
+ if (fsname != NULL) {
+ strncpy(fsname, svname, dash - svname);
+ fsname[dash - svname] = '\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);
+ if (endptr != NULL)
+ *endptr = dash;
+
+ return 0;
}
+EXPORT_SYMBOL(server_name2fsname);
-/** The operations we support directly on the superblock:
- * mount, umount, and df.
+/**
+ * Get service name (svname) from string
+ * rc < 0 on error
+ * if endptr isn't NULL it is set to end of fsname *
*/
-static struct super_operations server_ops =
-{
- .put_super = server_put_super,
- .umount_begin = server_umount_begin, /* umount -f */
- .statfs = server_statfs,
-};
-
-#define log2(n) cfs_ffz(~(n))
-#define LUSTRE_SUPER_MAGIC 0x0BD00BD1
-
-static int server_fill_super_common(struct super_block *sb)
+int server_name2svname(const char *label, char *svname, const char **endptr,
+ size_t svsize)
{
- 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;
+ int rc;
+ const char *dash;
- root = new_inode(sb);
- if (!root) {
- CERROR("Can't make root inode\n");
- RETURN(-EIO);
- }
+ /* We use server_name2fsname() just for parsing */
+ rc = server_name2fsname(label, NULL, &dash);
+ if (rc != 0)
+ return rc;
- /* 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;
+ if (endptr != NULL)
+ *endptr = dash;
- sb->s_root = d_alloc_root(root);
- if (!sb->s_root) {
- CERROR("Can't make root dentry\n");
- iput(root);
- RETURN(-EIO);
- }
+ if (strlcpy(svname, dash + 1, svsize) >= svsize)
+ return -E2BIG;
- RETURN(0);
+ return 0;
}
+EXPORT_SYMBOL(server_name2svname);
-static int osd_start(struct lustre_sb_info *lsi, unsigned long mflags)
+/**
+ * check server name is OST.
+ **/
+int server_name_is_ost(const char *svname)
{
- 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);
+ const char *dash;
+ int rc;
- dt_conf_get(NULL, lsi->lsi_dt_dev, &p);
+ /* We use server_name2fsname() just for parsing */
+ rc = server_name2fsname(svname, NULL, &dash);
+ if (rc != 0)
+ return rc;
- lsi->lsi_srv_mnt = p.ddp_mnt;
+ dash++;
-out:
- RETURN(rc);
+ if (strncmp(dash, "OST", 3) == 0)
+ return 1;
+ return 0;
}
+EXPORT_SYMBOL(server_name_is_ost);
-/** 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.
- */
-static int server_fill_super(struct super_block *sb)
+/**
+ * Get the index from the target name MDTXXXX/OSTXXXX
+ * rc = server type, or rc < 0 on error
+ **/
+int target_name2index(const char *tgtname, __u32 *idx, const char **endptr)
{
- 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);
- }
+ const char *dash = tgtname;
+ unsigned long index;
+ int rc;
- /* 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);
- }
+ if (strncmp(dash, "MDT", 3) == 0)
+ rc = LDD_F_SV_TYPE_MDT;
+ else if (strncmp(dash, "OST", 3) == 0)
+ rc = LDD_F_SV_TYPE_OST;
+ else
+ return -EINVAL;
- /* 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 */
- }
+ dash += 3;
- rc = server_fill_super_common(sb);
- if (rc)
- GOTO(out_mnt, rc);
+ if (strncmp(dash, "all", 3) == 0) {
+ if (endptr != NULL)
+ *endptr = dash + 3;
+ return rc | LDD_F_SV_ALL;
+ }
- 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;
+ index = simple_strtoul(dash, (char **)endptr, 16);
+ if (idx != NULL)
+ *idx = index;
+ return rc;
}
+EXPORT_SYMBOL(target_name2index);
-/*
- * Calculate timeout value for a target.
- */
-void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd)
+/* Get the index from the obd name.
+ rc = server type, or
+ rc < 0 on error
+ if endptr isn't NULL it is set to end of name */
+int server_name2index(const char *svname, __u32 *idx, const char **endptr)
{
- 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;
+ const char *dash;
+ int rc;
- /* make sure the timeout is not too short */
- new_soft = max(min, new_soft);
- new_hard = max(new_soft, new_hard);
+ /* We use server_name2fsname() just for parsing */
+ rc = server_name2fsname(svname, NULL, &dash);
+ if (rc != 0)
+ return rc;
- 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);
+ dash++;
+ rc = target_name2index(dash, idx, endptr);
+ if (rc < 0)
+ return rc;
- soft = new_soft;
- hard = new_hard;
- }
+ /* Account for -mdc after index that is possible when specifying mdt */
+ if (endptr != NULL && strncmp(LUSTRE_MDC_NAME, *endptr + 1,
+ sizeof(LUSTRE_MDC_NAME)-1) == 0)
+ *endptr += sizeof(LUSTRE_MDC_NAME);
- /* 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;
+ return rc;
}
-EXPORT_SYMBOL(server_calc_timeout);
+EXPORT_SYMBOL(server_name2index);
/*************** mount common betweeen server and client ***************/
static void lmd_print(struct lustre_mount_data *lmd)
{
- int i;
+ int i;
- PRINT_CMD(PRINT_MASK, " mount data:\n");
- if (lmd_is_client(lmd))
- PRINT_CMD(PRINT_MASK, "profile: %s\n", lmd->lmd_profile);
- PRINT_CMD(PRINT_MASK, "device: %s\n", lmd->lmd_dev);
- PRINT_CMD(PRINT_MASK, "flags: %x\n", lmd->lmd_flags);
+ PRINT_CMD(D_MOUNT, " mount data:\n");
+ if (lmd_is_client(lmd))
+ PRINT_CMD(D_MOUNT, "profile: %s\n", lmd->lmd_profile);
+ PRINT_CMD(D_MOUNT, "device: %s\n", lmd->lmd_dev);
+ PRINT_CMD(D_MOUNT, "flags: %x\n", lmd->lmd_flags);
- if (lmd->lmd_opts)
- PRINT_CMD(PRINT_MASK, "options: %s\n", lmd->lmd_opts);
+ if (lmd->lmd_opts)
+ PRINT_CMD(D_MOUNT, "options: %s\n", lmd->lmd_opts);
- if (lmd->lmd_recovery_time_soft)
- PRINT_CMD(PRINT_MASK, "recovery time soft: %d\n",
- lmd->lmd_recovery_time_soft);
+ if (lmd->lmd_recovery_time_soft)
+ PRINT_CMD(D_MOUNT, "recovery time soft: %d\n",
+ lmd->lmd_recovery_time_soft);
- if (lmd->lmd_recovery_time_hard)
- PRINT_CMD(PRINT_MASK, "recovery time hard: %d\n",
- lmd->lmd_recovery_time_hard);
+ if (lmd->lmd_recovery_time_hard)
+ PRINT_CMD(D_MOUNT, "recovery time hard: %d\n",
+ lmd->lmd_recovery_time_hard);
- for (i = 0; i < lmd->lmd_exclude_count; i++) {
- PRINT_CMD(PRINT_MASK, "exclude %d: OST%04x\n", i,
- lmd->lmd_exclude[i]);
- }
+ for (i = 0; i < lmd->lmd_exclude_count; i++) {
+ PRINT_CMD(D_MOUNT, "exclude %d: OST%04x\n", i,
+ lmd->lmd_exclude[i]);
+ }
}
/* Is this server on the exclusion list */
}
/* mount -v -o exclude=lustre-OST0001:lustre-OST0002 -t lustre ... */
-static int lmd_make_exclusion(struct lustre_mount_data *lmd, char *ptr)
+static int lmd_make_exclusion(struct lustre_mount_data *lmd, const char *ptr)
{
- char *s1 = ptr, *s2;
- __u32 index, *exclude_list;
- int rc = 0, devmax;
- ENTRY;
+ const char *s1 = ptr, *s2;
+ __u32 index, *exclude_list;
+ int rc = 0, devmax;
+ ENTRY;
- /* The shortest an ost name can be is 8 chars: -OST0000.
- We don't actually know the fsname at this time, so in fact
- a user could specify any fsname. */
- devmax = strlen(ptr) / 8 + 1;
+ /* The shortest an ost name can be is 8 chars: -OST0000.
+ We don't actually know the fsname at this time, so in fact
+ a user could specify any fsname. */
+ devmax = strlen(ptr) / 8 + 1;
- /* temp storage until we figure out how many we have */
- OBD_ALLOC(exclude_list, sizeof(index) * devmax);
- if (!exclude_list)
- RETURN(-ENOMEM);
+ /* temp storage until we figure out how many we have */
+ OBD_ALLOC(exclude_list, sizeof(index) * devmax);
+ if (!exclude_list)
+ RETURN(-ENOMEM);
- /* we enter this fn pointing at the '=' */
- while (*s1 && *s1 != ' ' && *s1 != ',') {
- s1++;
- rc = server_name2index(s1, &index, &s2);
- if (rc < 0) {
- CERROR("Can't parse server name '%s'\n", s1);
- break;
- }
- if (rc == LDD_F_SV_TYPE_OST)
- exclude_list[lmd->lmd_exclude_count++] = index;
- else
- CDEBUG(D_MOUNT, "ignoring exclude %.7s\n", s1);
- s1 = s2;
- /* now we are pointing at ':' (next exclude)
- or ',' (end of excludes) */
- if (lmd->lmd_exclude_count >= devmax)
- break;
- }
- if (rc >= 0) /* non-err */
- rc = 0;
-
- if (lmd->lmd_exclude_count) {
- /* permanent, freed in lustre_free_lsi */
- OBD_ALLOC(lmd->lmd_exclude, sizeof(index) *
- lmd->lmd_exclude_count);
- if (lmd->lmd_exclude) {
- memcpy(lmd->lmd_exclude, exclude_list,
- sizeof(index) * lmd->lmd_exclude_count);
- } else {
- rc = -ENOMEM;
- lmd->lmd_exclude_count = 0;
- }
- }
- OBD_FREE(exclude_list, sizeof(index) * devmax);
- RETURN(rc);
+ /* we enter this fn pointing at the '=' */
+ while (*s1 && *s1 != ' ' && *s1 != ',') {
+ s1++;
+ rc = server_name2index(s1, &index, &s2);
+ if (rc < 0) {
+ CERROR("Can't parse server name '%s': rc = %d\n",
+ s1, rc);
+ break;
+ }
+ if (rc == LDD_F_SV_TYPE_OST)
+ exclude_list[lmd->lmd_exclude_count++] = index;
+ else
+ CDEBUG(D_MOUNT, "ignoring exclude %.*s: type = %#x\n",
+ (uint)(s2-s1), s1, rc);
+ s1 = s2;
+ /* now we are pointing at ':' (next exclude)
+ or ',' (end of excludes) */
+ if (lmd->lmd_exclude_count >= devmax)
+ break;
+ }
+ if (rc >= 0) /* non-err */
+ rc = 0;
+
+ if (lmd->lmd_exclude_count) {
+ /* permanent, freed in lustre_free_lsi */
+ OBD_ALLOC(lmd->lmd_exclude, sizeof(index) *
+ lmd->lmd_exclude_count);
+ if (lmd->lmd_exclude) {
+ memcpy(lmd->lmd_exclude, exclude_list,
+ sizeof(index) * lmd->lmd_exclude_count);
+ } else {
+ rc = -ENOMEM;
+ lmd->lmd_exclude_count = 0;
+ }
+ }
+ OBD_FREE(exclude_list, sizeof(index) * devmax);
+ RETURN(rc);
}
static int lmd_parse_mgssec(struct lustre_mount_data *lmd, char *ptr)
int oldlen = 0;
/* Find end of nidlist */
- while (class_parse_nid(tail, &nid, &tail) == 0) {}
+ while (class_parse_nid_quiet(tail, &nid, &tail) == 0) {}
length = tail - *ptr;
if (length == 0) {
LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", *ptr);
} else if (strncmp(s1, "writeconf", 9) == 0) {
lmd->lmd_flags |= LMD_FLG_WRITECONF;
clear++;
+ } else if (strncmp(s1, "update", 6) == 0) {
+ lmd->lmd_flags |= LMD_FLG_UPDATE;
+ clear++;
} else if (strncmp(s1, "virgin", 6) == 0) {
lmd->lmd_flags |= LMD_FLG_VIRGIN;
clear++;
RETURN(-ENOMEM);
lmd = lsi->lsi_lmd;
- /*
- * Disable lockdep during mount, because mount locking patterns are
- * `special'.
- */
- cfs_lockdep_off();
+ /*
+ * Disable lockdep during mount, because mount locking patterns are
+ * `special'.
+ */
+ lockdep_off();
/*
* LU-639: the obd cleanup of last mount may not finish yet, wait here.
/* c_f_s will call lustre_common_put_super on failure */
}
} else {
- CDEBUG(D_MOUNT, "Mounting server from %s\n", lmd->lmd_dev);
- rc = server_fill_super(sb);
- /* s_f_s calls lustre_start_mgc after the mount because we need
- the MGS nids which are stored on disk. Plus, we may
- need to start the MGS first. */
- /* s_f_s will call server_put_super on failure */
+#ifdef HAVE_SERVER_SUPPORT
+ CDEBUG(D_MOUNT, "Mounting server from %s\n", lmd->lmd_dev);
+ rc = server_fill_super(sb);
+ /* s_f_s calls lustre_start_mgc after the mount because we need
+ the MGS nids which are stored on disk. Plus, we may
+ need to start the MGS first. */
+ /* s_f_s will call server_put_super on failure */
+#else
+ CERROR("This is client-side-only module, "
+ "cannot handle server mount.\n");
+ rc = -EINVAL;
+#endif
}
/* If error happens in fill_super() call, @lsi will be killed there.
CDEBUG(D_SUPER, "Mount %s complete\n",
lmd->lmd_dev);
}
- cfs_lockdep_on();
- return rc;
+ lockdep_on();
+ return rc;
}
.get_sb = lustre_get_sb,
#endif
.kill_sb = lustre_kill_super,
- .fs_flags = FS_BINARY_MOUNTDATA | FS_REQUIRES_DEV |
-#ifdef FS_HAS_FIEMAP
- FS_HAS_FIEMAP |
-#endif
- LL_RENAME_DOES_D_MOVE,
+ .fs_flags = FS_BINARY_MOUNTDATA | FS_REQUIRES_DEV |
+ FS_HAS_FIEMAP | FS_RENAME_DOES_D_MOVE,
};
int lustre_register_fs(void)
{
return unregister_filesystem(&lustre_fs_type);
}
-
-EXPORT_SYMBOL(server_mti_print);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff