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LU-9019 mdt: use 64-bit timestamps for rename stats
[fs/lustre-release.git] / lustre / mdt / mdt_lproc.c
index 667285d..7c34b80 100644 (file)
  *
  * 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2014, Intel Corporation.
+ * Copyright (c) 2011, 2016, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -116,13 +112,13 @@ static void display_rename_stats(struct seq_file *seq, char *name,
 static void rename_stats_show(struct seq_file *seq,
                               struct rename_stats *rename_stats)
 {
-        struct timeval now;
+       struct timespec64 now;
 
-        /* this sampling races with updates */
-        do_gettimeofday(&now);
-        seq_printf(seq, "rename_stats:\n");
-        seq_printf(seq, "- %-15s %lu.%lu\n", "snapshot_time:",
-                   now.tv_sec, now.tv_usec);
+       /* this sampling races with updates */
+       ktime_get_real_ts64(&now);
+       seq_printf(seq, "rename_stats:\n");
+       seq_printf(seq, "- %-15s %llu.%9lu\n", "snapshot_time:",
+                  (s64)now.tv_sec, now.tv_nsec);
 
         display_rename_stats(seq, "same_dir",
                              &rename_stats->hist[RENAME_SAMEDIR_SIZE]);
@@ -217,7 +213,8 @@ static int mdt_identity_expire_seq_show(struct seq_file *m, void *data)
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 
-       return seq_printf(m, "%u\n", mdt->mdt_identity_cache->uc_entry_expire);
+       seq_printf(m, "%u\n", mdt->mdt_identity_cache->uc_entry_expire);
+       return 0;
 }
 
 static ssize_t
@@ -227,13 +224,17 @@ mdt_identity_expire_seq_write(struct file *file, const char __user *buffer,
        struct seq_file   *m = file->private_data;
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
-       int rc, val;
+       int rc;
+       __s64 val;
 
-       rc = lprocfs_write_helper(buffer, count, &val);
+       rc = lprocfs_str_to_s64(buffer, count, &val);
        if (rc)
                return rc;
+       if (val < 0 || val > INT_MAX)
+               return -ERANGE;
 
        mdt->mdt_identity_cache->uc_entry_expire = val;
+
        return count;
 }
 LPROC_SEQ_FOPS(mdt_identity_expire);
@@ -243,7 +244,8 @@ static int mdt_identity_acquire_expire_seq_show(struct seq_file *m, void *data)
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 
-       return seq_printf(m, "%u\n", mdt->mdt_identity_cache->uc_acquire_expire);
+       seq_printf(m, "%u\n", mdt->mdt_identity_cache->uc_acquire_expire);
+       return 0;
 }
 
 static ssize_t
@@ -254,13 +256,17 @@ mdt_identity_acquire_expire_seq_write(struct file *file,
        struct seq_file   *m = file->private_data;
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
-       int rc, val;
+       int rc;
+       __s64 val;
 
-       rc = lprocfs_write_helper(buffer, count, &val);
+       rc = lprocfs_str_to_s64(buffer, count, &val);
        if (rc)
                return rc;
+       if (val < 0 || val > INT_MAX)
+               return -ERANGE;
 
        mdt->mdt_identity_cache->uc_acquire_expire = val;
+
        return count;
 }
 LPROC_SEQ_FOPS(mdt_identity_acquire_expire);
@@ -271,9 +277,9 @@ static int mdt_identity_upcall_seq_show(struct seq_file *m, void *data)
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
        struct upcall_cache *hash = mdt->mdt_identity_cache;
 
-       read_lock(&hash->uc_upcall_rwlock);
+       down_read(&hash->uc_upcall_rwsem);
        seq_printf(m, "%s\n", hash->uc_upcall);
-       read_unlock(&hash->uc_upcall_rwlock);
+       up_read(&hash->uc_upcall_rwsem);
        return 0;
 }
 
@@ -299,9 +305,9 @@ mdt_identity_upcall_seq_write(struct file *file, const char __user *buffer,
                GOTO(failed, rc = -EFAULT);
 
        /* Remove any extraneous bits from the upcall (e.g. linefeeds) */
-       write_lock(&hash->uc_upcall_rwlock);
+       down_write(&hash->uc_upcall_rwsem);
        sscanf(kernbuf, "%s", hash->uc_upcall);
-       write_unlock(&hash->uc_upcall_rwlock);
+       up_write(&hash->uc_upcall_rwsem);
 
        if (strcmp(hash->uc_name, mdt_obd_name(mdt)) != 0)
                CWARN("%s: write to upcall name %s\n",
@@ -330,11 +336,14 @@ lprocfs_identity_flush_seq_write(struct file *file, const char __user *buffer,
        struct seq_file   *m = file->private_data;
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
-       int rc, uid;
+       int rc;
+       __s64 uid;
 
-       rc = lprocfs_write_helper(buffer, count, &uid);
+       rc = lprocfs_str_to_s64(buffer, count, &uid);
        if (rc)
                return rc;
+       if (uid < INT_MIN || uid > INT_MAX)
+               return -ERANGE;
 
        mdt_flush_identity(mdt->mdt_identity_cache, uid);
        return count;
@@ -421,85 +430,93 @@ LPROC_SEQ_FOPS_RO(mdt_site_stats);
 #define BUFLEN (UUID_MAX + 4)
 
 static ssize_t
-lprocfs_mds_evict_client_seq_write(struct file *file,
-                                  const char __user *buffer,
+lprocfs_mds_evict_client_seq_write(struct file *file, const char __user *buf,
                                   size_t count, loff_t *off)
 {
+       struct seq_file   *m = file->private_data;
+       struct obd_device *obd = m->private;
+       struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
        char *kbuf;
        char *tmpbuf;
+       int rc = 0;
 
-        OBD_ALLOC(kbuf, BUFLEN);
-        if (kbuf == NULL)
-                return -ENOMEM;
-
-        /*
-         * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
-         * bytes into kbuf, to ensure that the string is NUL-terminated.
-         * UUID_MAX should include a trailing NUL already.
-         */
-       if (copy_from_user(kbuf, buffer,
-                          min_t(unsigned long, BUFLEN - 1, count))) {
-                count = -EFAULT;
-                goto out;
-        }
-        tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
+       OBD_ALLOC(kbuf, BUFLEN);
+       if (kbuf == NULL)
+               return -ENOMEM;
 
-        if (strncmp(tmpbuf, "nid:", 4) != 0) {
-               count = lprocfs_evict_client_seq_write(file, buffer, count,
-                                                      off);
-                goto out;
-        }
+       /*
+        * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
+        * bytes into kbuf, to ensure that the string is NUL-terminated.
+        * UUID_MAX should include a trailing NUL already.
+        */
+       if (copy_from_user(kbuf, buf, min_t(unsigned long, BUFLEN - 1, count)))
+               GOTO(out, rc = -EFAULT);
+       tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
+
+       if (strncmp(tmpbuf, "nid:", 4) != 0) {
+               count = lprocfs_evict_client_seq_write(file, buf, count, off);
+               goto out;
+       }
+
+       if (mdt->mdt_opts.mo_evict_tgt_nids) {
+               rc = obd_set_info_async(NULL, mdt->mdt_child_exp,
+                                       sizeof(KEY_EVICT_BY_NID),
+                                       KEY_EVICT_BY_NID,
+                                       strlen(tmpbuf + 4) + 1,
+                                       tmpbuf + 4, NULL);
+               if (rc)
+                       CERROR("Failed to evict nid %s from OSTs: rc %d\n",
+                              tmpbuf + 4, rc);
+       }
+
+       /* See the comments in function lprocfs_wr_evict_client()
+        * in ptlrpc/lproc_ptlrpc.c for details. - jay */
+       class_incref(obd, __func__, current);
+       obd_export_evict_by_nid(obd, tmpbuf + 4);
+       class_decref(obd, __func__, current);
 
-        CERROR("NOT implement evict client by nid %s\n", tmpbuf);
 
 out:
-        OBD_FREE(kbuf, BUFLEN);
-        return count;
+       OBD_FREE(kbuf, BUFLEN);
+       return rc < 0 ? rc : count;
 }
 
 #undef BUFLEN
 
-static int mdt_sec_level_seq_show(struct seq_file *m, void *data)
+static int mdt_evict_tgt_nids_seq_show(struct seq_file *m, void *data)
 {
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 
-       return seq_printf(m, "%d\n", mdt->mdt_lut.lut_sec_level);
+       seq_printf(m, "%u\n", mdt->mdt_opts.mo_evict_tgt_nids);
+       return 0;
 }
 
 static ssize_t
-mdt_sec_level_seq_write(struct file *file, const char __user *buffer,
-                       size_t count, loff_t *off)
+mdt_evict_tgt_nids_seq_write(struct file *file, const char __user *buffer,
+                              size_t count, loff_t *off)
 {
-       struct seq_file   *m = file->private_data;
+       struct seq_file   *m = file->private_data;
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
-       int val, rc;
-
-        rc = lprocfs_write_helper(buffer, count, &val);
-        if (rc)
-                return rc;
-
-        if (val > LUSTRE_SEC_ALL || val < LUSTRE_SEC_NONE)
-                return -EINVAL;
-
-        if (val == LUSTRE_SEC_SPECIFY) {
-                CWARN("security level %d will be supported in future.\n",
-                      LUSTRE_SEC_SPECIFY);
-                return -EINVAL;
-        }
+       __s64 val;
+       int rc;
 
-       mdt->mdt_lut.lut_sec_level = val;
+       rc = lprocfs_str_to_s64(buffer, count, &val);
+       if (rc)
+               return rc;
+       mdt->mdt_opts.mo_evict_tgt_nids = !!val;
        return count;
 }
-LPROC_SEQ_FOPS(mdt_sec_level);
+LPROC_SEQ_FOPS(mdt_evict_tgt_nids);
 
 static int mdt_cos_seq_show(struct seq_file *m, void *data)
 {
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 
-       return seq_printf(m, "%u\n", mdt_cos_is_enabled(mdt));
+       seq_printf(m, "%u\n", mdt_cos_is_enabled(mdt));
+       return 0;
 }
 
 static ssize_t
@@ -509,11 +526,15 @@ mdt_cos_seq_write(struct file *file, const char __user *buffer,
        struct seq_file   *m = file->private_data;
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
-       int val, rc;
+       int rc;
+       __s64 val;
 
-       rc = lprocfs_write_helper(buffer, count, &val);
+       rc = lprocfs_str_to_s64(buffer, count, &val);
        if (rc)
                return rc;
+       if (val < INT_MIN || val > INT_MAX)
+               return -ERANGE;
+
        mdt_enable_cos(mdt, val);
        return count;
 }
@@ -525,8 +546,9 @@ static int mdt_root_squash_seq_show(struct seq_file *m, void *data)
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
        struct root_squash_info *squash = &mdt->mdt_squash;
 
-       return seq_printf(m, "%u:%u\n", squash->rsi_uid,
-                         squash->rsi_gid);
+       seq_printf(m, "%u:%u\n", squash->rsi_uid,
+                  squash->rsi_gid);
+       return 0;
 }
 
 static ssize_t
@@ -548,19 +570,19 @@ static int mdt_nosquash_nids_seq_show(struct seq_file *m, void *data)
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
        struct root_squash_info *squash = &mdt->mdt_squash;
-       int len = 0, rc;
+       int len = 0;
 
        down_read(&squash->rsi_sem);
        if (!list_empty(&squash->rsi_nosquash_nids)) {
                len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
                                        &squash->rsi_nosquash_nids);
                m->count += len;
-               rc = seq_printf(m, "\n");
+               seq_putc(m, '\n');
        } else
-               rc = seq_printf(m, "NONE\n");
+               seq_puts(m, "NONE\n");
        up_read(&squash->rsi_sem);
 
-       return rc;
+       return 0;
 }
 
 static ssize_t
@@ -582,7 +604,8 @@ static int mdt_enable_remote_dir_seq_show(struct seq_file *m, void *data)
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 
-       return seq_printf(m, "%u\n", mdt->mdt_enable_remote_dir);
+       seq_printf(m, "%u\n", mdt->mdt_enable_remote_dir);
+       return 0;
 }
 
 static ssize_t
@@ -592,14 +615,14 @@ mdt_enable_remote_dir_seq_write(struct file *file, const char __user *buffer,
        struct seq_file   *m = file->private_data;
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
-       __u32 val;
+       __s64 val;
        int rc;
 
-       rc = lprocfs_write_helper(buffer, count, &val);
+       rc = lprocfs_str_to_s64(buffer, count, &val);
        if (rc)
                return rc;
 
-       if (val > 1)
+       if (val > 1 || val < 0)
                return -ERANGE;
 
        mdt->mdt_enable_remote_dir = val;
@@ -612,8 +635,9 @@ static int mdt_enable_remote_dir_gid_seq_show(struct seq_file *m, void *data)
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 
-       return seq_printf(m, "%d\n",
-                         (int)mdt->mdt_enable_remote_dir_gid);
+       seq_printf(m, "%d\n",
+                 (int)mdt->mdt_enable_remote_dir_gid);
+       return 0;
 }
 
 static ssize_t
@@ -624,10 +648,10 @@ mdt_enable_remote_dir_gid_seq_write(struct file *file,
        struct seq_file   *m = file->private_data;
        struct obd_device *obd = m->private;
        struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
-       __u32 val;
+       __s64 val;
        int rc;
 
-       rc = lprocfs_write_helper(buffer, count, &val);
+       rc = lprocfs_str_to_s64(buffer, count, &val);
        if (rc)
                return rc;
 
@@ -636,6 +660,109 @@ mdt_enable_remote_dir_gid_seq_write(struct file *file,
 }
 LPROC_SEQ_FOPS(mdt_enable_remote_dir_gid);
 
+/**
+ * Show MDT policy for handling dirty metadata under a lock being cancelled.
+ *
+ * \param[in] m                seq_file handle
+ * \param[in] data     unused for single entry
+ *
+ * \retval             0 on success
+ * \retval             negative value on error
+ */
+static int mdt_slc_seq_show(struct seq_file *m, void *data)
+{
+       struct obd_device *obd = m->private;
+       struct lu_target *tgt = obd->u.obt.obt_lut;
+       char *slc_states[] = {"never", "blocking", "always" };
+
+       seq_printf(m, "%s\n", slc_states[tgt->lut_sync_lock_cancel]);
+       return 0;
+}
+LPROC_SEQ_FOPS_RO(mdt_slc);
+
+/**
+ * Show MDT async commit count.
+ *
+ * \param[in] m                seq_file handle
+ * \param[in] data     unused for single entry
+ *
+ * \retval             0 on success
+ * \retval             negative value on error
+ */
+static int mdt_async_commit_count_seq_show(struct seq_file *m, void *data)
+{
+       struct obd_device *obd = m->private;
+       struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
+
+       seq_printf(m, "%d\n", atomic_read(&mdt->mdt_async_commit_count));
+       return 0;
+}
+
+static ssize_t
+mdt_async_commit_count_seq_write(struct file *file, const char __user *buffer,
+                                size_t count, loff_t *off)
+{
+       struct seq_file *m = file->private_data;
+       struct obd_device *obd = m->private;
+       struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
+       __s64 val;
+       int rc;
+
+       rc = lprocfs_str_to_s64(buffer, count, &val);
+       if (rc)
+               return rc;
+
+       if (val < INT_MIN || val > INT_MAX)
+               return -ERANGE;
+
+       atomic_set(&mdt->mdt_async_commit_count, val);
+
+       return count;
+}
+LPROC_SEQ_FOPS(mdt_async_commit_count);
+
+/**
+ * Show MDT sync count.
+ *
+ * \param[in] m                seq_file handle
+ * \param[in] data     unused for single entry
+ *
+ * \retval             0 on success
+ * \retval             negative value on error
+ */
+static int mdt_sync_count_seq_show(struct seq_file *m, void *data)
+{
+       struct obd_device *obd = m->private;
+       struct lu_target *tgt = obd->u.obt.obt_lut;
+
+       seq_printf(m, "%d\n", atomic_read(&tgt->lut_sync_count));
+       return 0;
+}
+
+static ssize_t
+mdt_sync_count_seq_write(struct file *file, const char __user *buffer,
+                        size_t count, loff_t *off)
+{
+       struct seq_file *m = file->private_data;
+       struct obd_device *obd = m->private;
+       struct lu_target *tgt = obd->u.obt.obt_lut;
+       __s64 val;
+       int rc;
+
+       rc = lprocfs_str_to_s64(buffer, count, &val);
+       if (rc)
+               return rc;
+
+       if (val < INT_MIN || val > INT_MAX)
+               return -ERANGE;
+
+       atomic_set(&tgt->lut_sync_count, val);
+
+       return count;
+}
+LPROC_SEQ_FOPS(mdt_sync_count);
+
+
 LPROC_SEQ_FOPS_RO_TYPE(mdt, uuid);
 LPROC_SEQ_FOPS_RO_TYPE(mdt, recovery_status);
 LPROC_SEQ_FOPS_RO_TYPE(mdt, num_exports);
@@ -647,6 +774,9 @@ LPROC_SEQ_FOPS_RW_TYPE(mdt, ir_factor);
 LPROC_SEQ_FOPS_RW_TYPE(mdt, nid_stats_clear);
 LPROC_SEQ_FOPS(mdt_hsm_cdt_control);
 
+LPROC_SEQ_FOPS_RW_TYPE(mdt, recovery_time_hard);
+LPROC_SEQ_FOPS_RW_TYPE(mdt, recovery_time_soft);
+
 static struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
        { .name =       "uuid",
          .fops =       &mdt_uuid_fops                          },
@@ -668,10 +798,10 @@ static struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
          .fops =       &mdt_site_stats_fops                    },
        { .name =       "evict_client",
          .fops =       &mdt_mds_evict_client_fops              },
+       { .name =       "evict_tgt_nids",
+         .fops =       &mdt_evict_tgt_nids_fops                },
        { .name =       "hash_stats",
          .fops =       &mdt_hash_fops                          },
-       { .name =       "sec_level",
-         .fops =       &mdt_sec_level_fops                     },
        { .name =       "commit_on_sharing",
          .fops =       &mdt_cos_fops                           },
        { .name =       "root_squash",
@@ -690,11 +820,22 @@ static struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
          .fops =       &mdt_enable_remote_dir_gid_fops         },
        { .name =       "hsm_control",
          .fops =       &mdt_hsm_cdt_control_fops               },
+       { .name =       "recovery_time_hard",
+         .fops =       &mdt_recovery_time_hard_fops    },
+       { .name =       "recovery_time_soft",
+         .fops =       &mdt_recovery_time_soft_fops    },
+       { .name =       "sync_lock_cancel",
+         .fops =       &mdt_slc_fops                           },
+       { .name =       "async_commit_count",
+         .fops =       &mdt_async_commit_count_fops            },
+       { .name =       "sync_count",
+         .fops =       &mdt_sync_count_fops                    },
        { NULL }
 };
 
-static int lprocfs_mdt_print_open_files(cfs_hash_t *hs, cfs_hash_bd_t *bd,
-                                       struct hlist_node *hnode, void *v)
+static int
+lprocfs_mdt_print_open_files(struct cfs_hash *hs, struct cfs_hash_bd *bd,
+                            struct hlist_node *hnode, void *v)
 {
        struct obd_export       *exp = cfs_hash_object(hs, hnode);
        struct seq_file         *seq = v;