#include "mdt_internal.h"
-static int mdt_server_data_update(const struct lu_env *env,
- struct mdt_device *mdt);
-
struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len)
{
struct lu_buf *buf;
return buf;
}
-struct thandle *mdt_trans_create(const struct lu_env *env,
- struct mdt_device *mdt)
-{
- return mdt->mdt_bottom->dd_ops->dt_trans_create(env, mdt->mdt_bottom);
-}
-
-int mdt_trans_start(const struct lu_env *env, struct mdt_device *mdt,
- struct thandle *th)
-{
- return dt_trans_start(env, mdt->mdt_bottom, th);
-}
-
void mdt_trans_stop(const struct lu_env *env,
struct mdt_device *mdt, struct thandle *th)
{
- struct mdt_thread_info *mti;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- /* export can require sync operations */
- if (mti->mti_exp != NULL)
- th->th_sync |= mti->mti_exp->exp_need_sync;
dt_trans_stop(env, mdt->mdt_bottom, th);
}
-static inline int mdt_last_rcvd_header_read(const struct lu_env *env,
- struct mdt_device *mdt)
-{
- struct mdt_thread_info *mti;
- int rc;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-
- mti->mti_off = 0;
- rc = dt_record_read(env, mdt->mdt_lut.lut_last_rcvd,
- mdt_buf(env, &mti->mti_lsd, sizeof(mti->mti_lsd)),
- &mti->mti_off);
- if (rc == 0)
- lsd_le_to_cpu(&mti->mti_lsd, &mdt->mdt_lut.lut_lsd);
-
- CDEBUG(D_INFO, "read last_rcvd header rc = %d, uuid = %s, "
- "last_transno = "LPU64"\n", rc, mdt->mdt_lut.lut_lsd.lsd_uuid,
- mdt->mdt_lut.lut_lsd.lsd_last_transno);
- return rc;
-}
-
-static int mdt_declare_last_rcvd_header_write(const struct lu_env *env,
- struct mdt_device *mdt,
- struct thandle *th)
-{
- struct mdt_thread_info *mti;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-
- return dt_declare_record_write(env, mdt->mdt_lut.lut_last_rcvd,
- sizeof(mti->mti_lsd), 0, th);
-}
-
-static int mdt_last_rcvd_header_write(const struct lu_env *env,
- struct mdt_device *mdt,
- struct thandle *th)
-{
- struct mdt_thread_info *mti;
- int rc;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-
- mti->mti_off = 0;
- lsd_cpu_to_le(&mdt->mdt_lut.lut_lsd, &mti->mti_lsd);
-
- rc = dt_record_write(env, mdt->mdt_lut.lut_last_rcvd,
- mdt_buf_const(env, &mti->mti_lsd,
- sizeof(mti->mti_lsd)),
- &mti->mti_off, th);
-
- CDEBUG(D_INFO, "write last_rcvd header rc = %d, uuid = %s, "
- "last_transno = "LPU64"\n", rc, mdt->mdt_lut.lut_lsd.lsd_uuid,
- mdt->mdt_lut.lut_lsd.lsd_last_transno);
-
- RETURN(rc);
-}
-
-static int mdt_last_rcvd_read(const struct lu_env *env, struct mdt_device *mdt,
- struct lsd_client_data *lcd, loff_t *off,
- int index)
-{
- struct mdt_thread_info *mti;
- struct lsd_client_data *tmp;
- int rc;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- tmp = &mti->mti_lcd;
- rc = dt_record_read(env, mdt->mdt_lut.lut_last_rcvd,
- mdt_buf(env, tmp, sizeof(*tmp)), off);
- if (rc == 0) {
- check_lcd(mdt2obd_dev(mdt)->obd_name, index, tmp);
- lcd_le_to_cpu(tmp, lcd);
- }
-
- CDEBUG(D_INFO, "read lcd @%d rc = %d, uuid = %s, last_transno = "LPU64
- ", last_xid = "LPU64", last_result = %u, last_data = %u, "
- "last_close_transno = "LPU64", last_close_xid = "LPU64", "
- "last_close_result = %u\n", (int)(*off - sizeof(*tmp)),
- rc, lcd->lcd_uuid, lcd->lcd_last_transno, lcd->lcd_last_xid,
- lcd->lcd_last_result, lcd->lcd_last_data,
- lcd->lcd_last_close_transno, lcd->lcd_last_close_xid,
- lcd->lcd_last_close_result);
- return rc;
-}
-
-static int mdt_declare_last_rcvd_write(const struct lu_env *env,
- struct mdt_device *mdt,
- loff_t off, struct thandle *th)
-{
- return dt_declare_record_write(env, mdt->mdt_lut.lut_last_rcvd,
- sizeof(struct lsd_client_data), off, th);
-}
-
-static int mdt_last_rcvd_write(const struct lu_env *env,
- struct mdt_device *mdt,
- struct lsd_client_data *lcd,
- loff_t *off, struct thandle *th)
-{
- struct mdt_thread_info *mti;
- struct lsd_client_data *tmp;
- int rc;
-
- LASSERT(th != NULL);
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- tmp = &mti->mti_lcd;
-
- lcd_cpu_to_le(lcd, tmp);
-
- rc = dt_record_write(env, mdt->mdt_lut.lut_last_rcvd,
- mdt_buf_const(env, tmp, sizeof(*tmp)), off, th);
-
- CDEBUG(D_INFO, "write lcd @%d rc = %d, uuid = %s, last_transno = "LPU64
- ", last_xid = "LPU64", last_result = %u, last_data = %u, "
- "last_close_transno = "LPU64", last_close_xid = "LPU64" ,"
- "last_close_result = %u\n", (int)(*off - sizeof(*tmp)),
- rc, lcd->lcd_uuid, lcd->lcd_last_transno, lcd->lcd_last_xid,
- lcd->lcd_last_result, lcd->lcd_last_data,
- lcd->lcd_last_close_transno, lcd->lcd_last_close_xid,
- lcd->lcd_last_close_result);
- return rc;
-}
-
static int mdt_clients_data_init(const struct lu_env *env,
struct mdt_device *mdt,
unsigned long last_size)
off = lsd->lsd_client_start +
cl_idx * lsd->lsd_client_size;
- rc = mdt_last_rcvd_read(env, mdt, lcd, &off, cl_idx);
+ rc = lut_client_data_read(env, &mdt->mdt_lut, lcd, &off, cl_idx);
if (rc) {
CERROR("error reading MDS %s idx %d, off %llu: rc %d\n",
LAST_RCVD, cl_idx, off, rc);
mti->mti_exp = exp;
/* copy on-disk lcd to the export */
*exp->exp_target_data.ted_lcd = *lcd;
- rc = mdt_client_add(env, mdt, cl_idx);
+ rc = lut_client_add(env, exp, cl_idx);
/* can't fail existing */
LASSERTF(rc == 0, "rc = %d\n", rc);
/* VBR: set export last committed version */
struct mdt_thread_info *mti;
struct dt_object *obj;
struct lu_attr *la;
- struct lustre_disk_data *ldd;
unsigned long last_rcvd_size;
__u64 mount_count;
int rc;
la = &mti->mti_attr.ma_attr;
obj = mdt->mdt_lut.lut_last_rcvd;
- rc = obj->do_ops->do_attr_get(env, obj, la, BYPASS_CAPA);
+ rc = dt_attr_get(env, obj, la, BYPASS_CAPA);
if (rc)
RETURN(rc);
OBD_INCOMPAT_MULTI_OI;
} else {
LCONSOLE_WARN("%s: used disk, loading\n", obd->obd_name);
- rc = mdt_last_rcvd_header_read(env, mdt);
+ rc = lut_server_data_read(env, &mdt->mdt_lut);
if (rc) {
CERROR("error reading MDS %s: rc %d\n", LAST_RCVD, rc);
GOTO(out, rc);
}
mount_count = lsd->lsd_mount_count;
- ldd = lsi->lsi_ldd;
-
if (lsd->lsd_feature_incompat & ~MDT_INCOMPAT_SUPP) {
CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
obd->obd_name,
LCONSOLE_WARN("Mounting %s at first time on 1.8 FS, "
"remove all clients for interop needs\n",
obd->obd_name);
- simple_truncate(lsi->lsi_srv_mnt->mnt_sb->s_root,
- lsi->lsi_srv_mnt, LAST_RCVD,
- lsd->lsd_client_start);
+ rc = lut_truncate_last_rcvd(env, &mdt->mdt_lut,
+ lsd->lsd_client_start);
+ if (rc)
+ GOTO(out, rc);
last_rcvd_size = lsd->lsd_client_start;
}
/** set 2.0 flag to upgrade/downgrade between 1.8 and 2.0 */
lsd->lsd_feature_compat |= OBD_COMPAT_20;
}
- if (ldd->ldd_flags & LDD_F_IAM_DIR)
+ if (lsi->lsi_ldd->ldd_flags & LDD_F_IAM_DIR)
lsd->lsd_feature_incompat |= OBD_INCOMPAT_IAM_DIR;
lsd->lsd_feature_incompat |= OBD_INCOMPAT_FID;
lsd->lsd_mount_count = obd->u.obt.obt_mount_count;
/* save it, so mount count and last_transno is current */
- rc = mdt_server_data_update(env, mdt);
+ rc = lut_server_data_update(env, &mdt->mdt_lut, 0);
if (rc)
GOTO(err_client, rc);
return rc;
}
-static int mdt_server_data_update(const struct lu_env *env,
- struct mdt_device *mdt)
-{
- struct mdt_thread_info *mti;
- struct thandle *th;
- int rc;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-
- th = mdt_trans_create(env, mdt);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
-
- rc = mdt_declare_last_rcvd_header_write(env, mdt, th);
- if (rc)
- goto out;
-
- rc = mdt_trans_start(env, mdt, th);
- if (rc)
- goto out;
-
- CDEBUG(D_SUPER, "MDS mount_count is "LPU64", last_transno is "LPU64"\n",
- mdt->mdt_lut.lut_obd->u.obt.obt_mount_count,
- mdt->mdt_lut.lut_last_transno);
-
- cfs_spin_lock(&mdt->mdt_lut.lut_translock);
- mdt->mdt_lut.lut_lsd.lsd_last_transno = mdt->mdt_lut.lut_last_transno;
- cfs_spin_unlock(&mdt->mdt_lut.lut_translock);
-
- rc = mdt_last_rcvd_header_write(env, mdt, th);
-
-out:
- mdt_trans_stop(env, mdt, th);
- return rc;
-}
-
-
-int mdt_client_new(const struct lu_env *env, struct mdt_device *mdt)
-{
- unsigned long *bitmap = mdt->mdt_lut.lut_client_bitmap;
- struct mdt_thread_info *mti;
- struct tg_export_data *ted;
- struct lr_server_data *lsd = &mdt->mdt_lut.lut_lsd;
- struct obd_device *obd = mdt2obd_dev(mdt);
- struct thandle *th;
- loff_t off;
- int rc;
- int cl_idx;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
-
- ted = &mti->mti_exp->exp_target_data;
-
- LASSERT(bitmap != NULL);
- if (!strcmp(ted->ted_lcd->lcd_uuid, obd->obd_uuid.uuid))
- RETURN(0);
-
- /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
- * there's no need for extra complication here
- */
- cfs_spin_lock(&mdt->mdt_lut.lut_client_bitmap_lock);
- cl_idx = cfs_find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
- if (cl_idx >= LR_MAX_CLIENTS ||
- OBD_FAIL_CHECK(OBD_FAIL_MDS_CLIENT_ADD)) {
- CERROR("no room for %u clients - fix LR_MAX_CLIENTS\n",
- cl_idx);
- cfs_spin_unlock(&mdt->mdt_lut.lut_client_bitmap_lock);
- RETURN(-EOVERFLOW);
- }
- cfs_set_bit(cl_idx, bitmap);
- cfs_spin_unlock(&mdt->mdt_lut.lut_client_bitmap_lock);
-
- CDEBUG(D_INFO, "client at idx %d with UUID '%s' added\n",
- cl_idx, ted->ted_lcd->lcd_uuid);
-
- ted->ted_lr_idx = cl_idx;
- ted->ted_lr_off = lsd->lsd_client_start +
- (cl_idx * lsd->lsd_client_size);
- cfs_mutex_init(&ted->ted_lcd_lock);
-
- LASSERTF(ted->ted_lr_off > 0, "ted_lr_off = %llu\n", ted->ted_lr_off);
-
- /* Write new client data. */
- off = ted->ted_lr_off;
-
- if (OBD_FAIL_CHECK(OBD_FAIL_TGT_CLIENT_ADD))
- RETURN(-ENOSPC);
-
- th = mdt_trans_create(env, mdt);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
-
- rc = mdt_declare_last_rcvd_write(env, mdt, off, th);
- if (rc)
- GOTO(stop, rc);
-
- rc = mdt_trans_start(env, mdt, th);
- if (rc)
- GOTO(stop, rc);
-
- /*
- * Until this operations will be committed the sync is needed
- * for this export. This should be done _after_ starting the
- * transaction so that many connecting clients will not bring
- * server down with lots of sync writes.
- */
- rc = lut_new_client_cb_add(th, mti->mti_exp);
- if (rc) {
- /* can't add callback, do sync now */
- th->th_sync = 1;
- } else {
- cfs_spin_lock(&mti->mti_exp->exp_lock);
- mti->mti_exp->exp_need_sync = 1;
- cfs_spin_unlock(&mti->mti_exp->exp_lock);
- }
-
- rc = mdt_last_rcvd_write(env, mdt, ted->ted_lcd, &off, th);
- CDEBUG(D_INFO, "wrote client lcd at idx %u off %llu (len %u)\n",
- cl_idx, ted->ted_lr_off, (int)sizeof(*(ted->ted_lcd)));
-
-stop:
- mdt_trans_stop(env, mdt, th);
-
- RETURN(rc);
-}
-
-/* Add client data to the MDS. We use a bitmap to locate a free space
- * in the last_rcvd file if cl_off is -1 (i.e. a new client).
- * Otherwise, we just have to read the data from the last_rcvd file and
- * we know its offset.
- *
- * It should not be possible to fail adding an existing client - otherwise
- * mdt_init_server_data() callsite needs to be fixed.
- */
-int mdt_client_add(const struct lu_env *env,
- struct mdt_device *mdt, int cl_idx)
-{
- struct mdt_thread_info *mti;
- struct tg_export_data *ted;
- unsigned long *bitmap = mdt->mdt_lut.lut_client_bitmap;
- struct obd_device *obd = mdt2obd_dev(mdt);
- struct lr_server_data *lsd = &mdt->mdt_lut.lut_lsd;
- int rc = 0;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
-
- ted = &mti->mti_exp->exp_target_data;
-
- LASSERT(bitmap != NULL);
- LASSERTF(cl_idx >= 0, "%d\n", cl_idx);
-
- if (!strcmp(ted->ted_lcd->lcd_uuid, obd->obd_uuid.uuid))
- RETURN(0);
-
- cfs_spin_lock(&mdt->mdt_lut.lut_client_bitmap_lock);
- if (cfs_test_and_set_bit(cl_idx, bitmap)) {
- CERROR("MDS client %d: bit already set in bitmap!!\n",
- cl_idx);
- LBUG();
- }
- cfs_spin_unlock(&mdt->mdt_lut.lut_client_bitmap_lock);
-
- CDEBUG(D_INFO, "client at idx %d with UUID '%s' added\n",
- cl_idx, ted->ted_lcd->lcd_uuid);
-
- ted->ted_lr_idx = cl_idx;
- ted->ted_lr_off = lsd->lsd_client_start +
- (cl_idx * lsd->lsd_client_size);
- cfs_mutex_init(&ted->ted_lcd_lock);
-
- LASSERTF(ted->ted_lr_off > 0, "ted_lr_off = %llu\n", ted->ted_lr_off);
-
- RETURN(rc);
-}
-
-int mdt_client_del(const struct lu_env *env, struct mdt_device *mdt)
-{
- struct mdt_thread_info *mti;
- struct tg_export_data *ted;
- struct obd_device *obd = mdt2obd_dev(mdt);
- struct obd_export *exp;
- struct thandle *th;
- loff_t off;
- int rc = 0;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
-
- exp = mti->mti_exp;
- ted = &exp->exp_target_data;
- if (!ted->ted_lcd)
- RETURN(0);
-
- /* XXX: If lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
- if (!strcmp(ted->ted_lcd->lcd_uuid, obd->obd_uuid.uuid))
- GOTO(free, 0);
-
- CDEBUG(D_INFO, "freeing client at idx %u, offset %lld\n",
- ted->ted_lr_idx, ted->ted_lr_off);
-
- off = ted->ted_lr_off;
-
- /*
- * Don't clear ted_lr_idx here as it is likely also unset. At worst we
- * leak a client slot that will be cleaned on the next recovery.
- */
- if (off <= 0) {
- CERROR("client idx %d has offset %lld\n",
- ted->ted_lr_idx, off);
- GOTO(free, rc = -EINVAL);
- }
-
- /*
- * Clear the bit _after_ zeroing out the client so we don't race with
- * mdt_client_add and zero out new clients.
- */
- if (!cfs_test_bit(ted->ted_lr_idx, mdt->mdt_lut.lut_client_bitmap)) {
- CERROR("MDT client %u: bit already clear in bitmap!!\n",
- ted->ted_lr_idx);
- LBUG();
- }
-
- /* Make sure the server's last_transno is up to date.
- * This should be done before zeroing client slot so last_transno will
- * be in server data or in client data in case of failure */
- mdt_server_data_update(env, mdt);
-
- th = mdt_trans_create(env, mdt);
- if (IS_ERR(th))
- GOTO(free, rc = PTR_ERR(th));
-
- rc = mdt_declare_last_rcvd_write(env, mdt, off, th);
- if (rc)
- GOTO(stop, rc);
-
- rc = mdt_trans_start(env, mdt, th);
- if (rc)
- GOTO(stop, rc);
-
- cfs_mutex_lock(&ted->ted_lcd_lock);
- memset(ted->ted_lcd->lcd_uuid, 0, sizeof ted->ted_lcd->lcd_uuid);
- rc = mdt_last_rcvd_write(env, mdt, ted->ted_lcd, &off, th);
- cfs_mutex_unlock(&ted->ted_lcd_lock);
-
-stop:
- mdt_trans_stop(env, mdt, th);
-
- CDEBUG(rc == 0 ? D_INFO : D_ERROR, "Zeroing out client idx %u in "
- "%s, rc %d\n", ted->ted_lr_idx, LAST_RCVD, rc);
- RETURN(0);
-free:
- return 0;
-}
-
/*
* last_rcvd & last_committed update callbacks
*/
cfs_mutex_unlock(&ted->ted_lcd_lock);
CWARN("commit transaction for disconnected client %s: rc %d\n",
req->rq_export->exp_client_uuid.uuid, rc);
- err = mdt_last_rcvd_header_write(mti->mti_env, mdt, th);
+ err = lut_server_data_write(mti->mti_env, &mdt->mdt_lut, th);
RETURN(err);
}
CERROR("client idx %d has offset %lld\n", ted->ted_lr_idx, off);
err = -EINVAL;
} else {
- err = mdt_last_rcvd_write(mti->mti_env, mdt, lcd, &off, th);
+ err = lut_client_data_write(mti->mti_env, &mdt->mdt_lut, lcd,
+ &off, th);
}
cfs_mutex_unlock(&ted->ted_lcd_lock);
RETURN(err);
/* add credits for last_rcvd update */
static int mdt_txn_start_cb(const struct lu_env *env,
- struct thandle *th, void *cookie)
+ struct thandle *th, void *cookie)
{
- struct mdt_device *mdt = cookie;
+ struct mdt_device *mdt = cookie;
+ struct mdt_thread_info *mti;
+ int rc;
+ ENTRY;
+
+ mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
+
+ LASSERT(mdt->mdt_lut.lut_last_rcvd);
+ if (mti->mti_exp == NULL)
+ RETURN(0);
+
+ rc = dt_declare_record_write(env, mdt->mdt_lut.lut_last_rcvd,
+ sizeof(struct lsd_client_data),
+ mti->mti_exp->exp_target_data.ted_lr_off,
+ th);
+ if (rc)
+ return rc;
+
+ rc = dt_declare_record_write(env, mdt->mdt_lut.lut_last_rcvd,
+ sizeof(struct lr_server_data), 0, th);
+ if (rc)
+ return rc;
+
+ if (mti->mti_mos != NULL)
+ rc = dt_declare_version_set(env, mdt_obj2dt(mti->mti_mos), th);
- /* XXX: later we'll be declaring this at specific offset */
- return dt_declare_record_write(env, mdt->mdt_lut.lut_last_rcvd,
- sizeof(struct lsd_client_data), 0, th);
+ return rc;
}
/* Update last_rcvd records with latests transaction data */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff