X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fmdd%2Fmdd_lproc.c;h=829afc792e9926543175ce8e032d49be2ad66ec5;hb=c228613e18d4496d026d56040e394fe90273de2f;hp=cc3c4b9af622bc5a26df5863b74e2cd36a1c08bb;hpb=98060d83459ba10409f295898f0ec917f938b4d3;p=fs%2Flustre-release.git

diff --git a/lustre/mdd/mdd_lproc.c b/lustre/mdd/mdd_lproc.c
index cc3c4b9..829afc7 100644
--- a/lustre/mdd/mdd_lproc.c
+++ b/lustre/mdd/mdd_lproc.c
@@ -15,11 +15,7 @@
  *
  * 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) 2012, 2013, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -49,164 +45,113 @@
 #include <libcfs/libcfs_string.h>
 #include "mdd_internal.h"
 
-int mdd_procfs_init(struct mdd_device *mdd, const char *name)
+static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
+			 char *buf)
 {
-        struct lprocfs_static_vars lvars;
-        struct obd_type     *type;
-        int                  rc;
-        ENTRY;
-
-	/* at the moment there is no linkage between lu_type
-	 * and obd_type, so we lookup obd_type this way */
-	type = class_search_type(LUSTRE_MDD_NAME);
-
-        LASSERT(name != NULL);
-        LASSERT(type != NULL);
-
-        /* Find the type procroot and add the proc entry for this device */
-        lprocfs_mdd_init_vars(&lvars);
-        mdd->mdd_proc_entry = lprocfs_register(name, type->typ_procroot,
-                                               lvars.obd_vars, mdd);
-        if (IS_ERR(mdd->mdd_proc_entry)) {
-                rc = PTR_ERR(mdd->mdd_proc_entry);
-                CERROR("Error %d setting up lprocfs for %s\n",
-                       rc, name);
-                mdd->mdd_proc_entry = NULL;
-                GOTO(out, rc);
-        }
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	struct obd_device *obd = mdd2obd_dev(mdd);
 
-	rc = 0;
-
-        EXIT;
-out:
-        if (rc)
-               mdd_procfs_fini(mdd);
-        return rc;
+	return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
 }
+LUSTRE_RO_ATTR(uuid);
 
-int mdd_procfs_fini(struct mdd_device *mdd)
+static ssize_t atime_diff_show(struct kobject *kobj, struct attribute *attr,
+			       char *buf)
 {
-        if (mdd->mdd_proc_entry) {
-                 lprocfs_remove(&mdd->mdd_proc_entry);
-                 mdd->mdd_proc_entry = NULL;
-        }
-        RETURN(0);
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return sprintf(buf, "%lld\n", mdd->mdd_atime_diff);
 }
 
-static int lprocfs_wr_atime_diff(struct file *file, const char *buffer,
-                                 unsigned long count, void *data)
+static ssize_t atime_diff_store(struct kobject *kobj,
+				struct attribute *attr,
+				const char *buffer, size_t count)
 {
-        struct mdd_device *mdd = data;
-        char kernbuf[20], *end;
-        unsigned long diff = 0;
-
-        if (count > (sizeof(kernbuf) - 1))
-                return -EINVAL;
-
-        if (cfs_copy_from_user(kernbuf, buffer, count))
-                return -EFAULT;
-
-        kernbuf[count] = '\0';
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	time64_t diff = 0;
+	int rc;
 
-        diff = simple_strtoul(kernbuf, &end, 0);
-        if (kernbuf == end)
-                return -EINVAL;
+	rc = kstrtoll(buffer, 10, &diff);
+	if (rc)
+		return rc;
 
         mdd->mdd_atime_diff = diff;
         return count;
 }
+LUSTRE_RW_ATTR(atime_diff);
 
-static int lprocfs_rd_atime_diff(char *page, char **start, off_t off,
-                                 int count, int *eof, void *data)
+/**** changelogs ****/
+static int mdd_changelog_mask_seq_show(struct seq_file *m, void *data)
 {
-        struct mdd_device *mdd = data;
+	struct mdd_device *mdd = m->private;
+	int i = 0;
 
-        *eof = 1;
-        return snprintf(page, count, "%lu\n", mdd->mdd_atime_diff);
+	while (i < CL_LAST) {
+		if (mdd->mdd_cl.mc_mask & (1 << i))
+			seq_printf(m, "%s ", changelog_type2str(i));
+		i++;
+	}
+	seq_putc(m, '\n');
+	return 0;
 }
 
-
-/**** changelogs ****/
-static int lprocfs_rd_changelog_mask(char *page, char **start, off_t off,
-                                     int count, int *eof, void *data)
-{
-        struct mdd_device *mdd = data;
-        int i = 0, rc = 0;
-
-        *eof = 1;
-        while (i < CL_LAST) {
-                if (mdd->mdd_cl.mc_mask & (1 << i))
-                        rc += snprintf(page + rc, count - rc, "%s ",
-                                       changelog_type2str(i));
-                i++;
-        }
-        return rc;
-}
-
-static int lprocfs_wr_changelog_mask(struct file *file, const char *buffer,
-                                     unsigned long count, void *data)
-{
-        struct mdd_device *mdd = data;
-        char *kernbuf;
-        int rc;
-        ENTRY;
-
-        if (count >= CFS_PAGE_SIZE)
-                RETURN(-EINVAL);
-        OBD_ALLOC(kernbuf, CFS_PAGE_SIZE);
-        if (kernbuf == NULL)
-                RETURN(-ENOMEM);
-        if (cfs_copy_from_user(kernbuf, buffer, count))
-                GOTO(out, rc = -EFAULT);
-        kernbuf[count] = 0;
-
-        rc = cfs_str2mask(kernbuf, changelog_type2str, &mdd->mdd_cl.mc_mask,
-                          CHANGELOG_MINMASK, CHANGELOG_ALLMASK);
-        if (rc == 0)
-                rc = count;
+static ssize_t
+mdd_changelog_mask_seq_write(struct file *file, const char __user *buffer,
+			     size_t count, loff_t *off)
+{
+	struct seq_file *m = file->private_data;
+	struct mdd_device *mdd = m->private;
+	char *kernbuf;
+	int rc;
+	ENTRY;
+
+	if (count >= PAGE_SIZE)
+		RETURN(-EINVAL);
+	OBD_ALLOC(kernbuf, PAGE_SIZE);
+	if (kernbuf == NULL)
+		RETURN(-ENOMEM);
+	if (copy_from_user(kernbuf, buffer, count))
+		GOTO(out, rc = -EFAULT);
+	kernbuf[count] = 0;
+
+	rc = cfs_str2mask(kernbuf, changelog_type2str, &mdd->mdd_cl.mc_mask,
+			  CHANGELOG_MINMASK, CHANGELOG_ALLMASK);
+	if (rc == 0)
+		rc = count;
 out:
-        OBD_FREE(kernbuf, CFS_PAGE_SIZE);
-        return rc;
+	OBD_FREE(kernbuf, PAGE_SIZE);
+	return rc;
 }
-
-struct cucb_data {
-        char *page;
-        int count;
-        int idx;
-};
+LDEBUGFS_SEQ_FOPS(mdd_changelog_mask);
 
 static int lprocfs_changelog_users_cb(const struct lu_env *env,
 				      struct llog_handle *llh,
 				      struct llog_rec_hdr *hdr, void *data)
 {
-        struct llog_changelog_user_rec *rec;
-        struct cucb_data *cucb = (struct cucb_data *)data;
+	struct llog_changelog_user_rec *rec;
+	struct seq_file *m = data;
 
-        LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+	LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
 
-        rec = (struct llog_changelog_user_rec *)hdr;
+	rec = (struct llog_changelog_user_rec *)hdr;
 
-        cucb->idx += snprintf(cucb->page + cucb->idx, cucb->count - cucb->idx,
-                              CHANGELOG_USER_PREFIX"%-3d "LPU64"\n",
-                              rec->cur_id, rec->cur_endrec);
-        if (cucb->idx >= cucb->count)
-                return -ENOSPC;
-
-        return 0;
+	seq_printf(m, CHANGELOG_USER_PREFIX"%-3d %llu (%u)\n",
+		   rec->cur_id, rec->cur_endrec, (__u32)get_seconds() -
+						 rec->cur_time);
+	return 0;
 }
 
-static int lprocfs_rd_changelog_users(char *page, char **start, off_t off,
-                                      int count, int *eof, void *data)
+static int mdd_changelog_users_seq_show(struct seq_file *m, void *data)
 {
 	struct lu_env		 env;
-	struct mdd_device	*mdd = data;
+	struct mdd_device	*mdd = m->private;
 	struct llog_ctxt	*ctxt;
-	struct cucb_data	 cucb;
 	__u64			 cur;
 	int			 rc;
 
-        *eof = 1;
-
         ctxt = llog_get_context(mdd2obd_dev(mdd),
 				LLOG_CHANGELOG_USER_ORIG_CTXT);
         if (ctxt == NULL)
@@ -223,125 +168,573 @@ static int lprocfs_rd_changelog_users(char *page, char **start, off_t off,
 	cur = mdd->mdd_cl.mc_index;
 	spin_unlock(&mdd->mdd_cl.mc_lock);
 
-        cucb.count = count;
-        cucb.page = page;
-        cucb.idx = 0;
-
-        cucb.idx += snprintf(cucb.page + cucb.idx, cucb.count - cucb.idx,
-                              "current index: "LPU64"\n", cur);
-
-        cucb.idx += snprintf(cucb.page + cucb.idx, cucb.count - cucb.idx,
-                              "%-5s %s\n", "ID", "index");
+	seq_printf(m, "current index: %llu\n", cur);
+	seq_printf(m, "%-5s %s %s\n", "ID", "index", "(idle seconds)");
 
 	llog_cat_process(&env, ctxt->loc_handle, lprocfs_changelog_users_cb,
-			 &cucb, 0, 0);
+			 m, 0, 0);
 
 	lu_env_fini(&env);
 	llog_ctxt_put(ctxt);
-	return cucb.idx;
+	return 0;
 }
+LDEBUGFS_SEQ_FOPS_RO(mdd_changelog_users);
 
-static int lprocfs_rd_sync_perm(char *page, char **start, off_t off,
-                                int count, int *eof, void *data)
+static int mdd_changelog_size_ctxt(const struct lu_env *env,
+				   struct mdd_device *mdd,
+				   int index, __u64 *val)
 {
-        struct mdd_device *mdd = data;
+	struct llog_ctxt	*ctxt;
+
+	ctxt = llog_get_context(mdd2obd_dev(mdd),
+				index);
+	if (ctxt == NULL)
+		return -ENXIO;
+
+	if (!(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)) {
+		CERROR("%s: ChangeLog has wrong flags: rc = %d\n",
+		       ctxt->loc_obd->obd_name, -EINVAL);
+		llog_ctxt_put(ctxt);
+		return -EINVAL;
+	}
+
+	*val += llog_cat_size(env, ctxt->loc_handle);
 
-        LASSERT(mdd != NULL);
-        return snprintf(page, count, "%d\n", mdd->mdd_sync_permission);
+	llog_ctxt_put(ctxt);
+
+	return 0;
 }
 
-static int lprocfs_wr_sync_perm(struct file *file, const char *buffer,
-                                unsigned long count, void *data)
+static ssize_t changelog_size_show(struct kobject *kobj,
+				   struct attribute *attr,
+				   char *buf)
 {
-        struct mdd_device *mdd = data;
-        int val, rc;
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	struct lu_env env;
+	u64 tmp = 0;
+	int rc;
 
-        LASSERT(mdd != NULL);
-        rc = lprocfs_write_helper(buffer, count, &val);
-        if (rc)
-                return rc;
+	rc = lu_env_init(&env, LCT_LOCAL);
+	if (rc)
+		return rc;
 
-        mdd->mdd_sync_permission = !!val;
-        return count;
+	rc = mdd_changelog_size_ctxt(&env, mdd, LLOG_CHANGELOG_ORIG_CTXT, &tmp);
+	if (rc) {
+		lu_env_fini(&env);
+		return rc;
+	}
+
+	rc = mdd_changelog_size_ctxt(&env, mdd, LLOG_CHANGELOG_USER_ORIG_CTXT,
+				     &tmp);
+
+	rc = sprintf(buf, "%llu\n", tmp);
+	lu_env_fini(&env);
+	return rc;
 }
+LUSTRE_RO_ATTR(changelog_size);
 
-static int lprocfs_rd_lfsck_speed_limit(char *page, char **start, off_t off,
-					int count, int *eof, void *data)
+static ssize_t changelog_gc_show(struct kobject *kobj,
+				 struct attribute *attr,
+				 char *buf)
 {
-	struct mdd_device *mdd = data;
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
 
-	LASSERT(mdd != NULL);
-	*eof = 1;
-	return snprintf(page, count, "%u\n",
-			mdd->mdd_lfsck.ml_bookmark_ram.lb_speed_limit);
+	return sprintf(buf, "%u\n", mdd->mdd_changelog_gc);
 }
 
-static int lprocfs_wr_lfsck_speed_limit(struct file *file, const char *buffer,
-					unsigned long count, void *data)
+static ssize_t changelog_gc_store(struct kobject *kobj,
+				  struct attribute *attr,
+				  const char *buffer, size_t count)
 {
-	struct mdd_device *mdd = data;
-	struct md_lfsck *lfsck;
-	__u32 val;
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	bool val;
+	int rc;
+
+	rc = kstrtobool(buffer, &val);
+	if (rc)
+		return rc;
+
+	mdd->mdd_changelog_gc = val;
+
+	return count;
+}
+LUSTRE_RW_ATTR(changelog_gc);
+
+static ssize_t changelog_max_idle_time_show(struct kobject *kobj,
+					    struct attribute *attr,
+					    char *buf)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return sprintf(buf, "%lld\n", mdd->mdd_changelog_max_idle_time);
+}
+
+static ssize_t changelog_max_idle_time_store(struct kobject *kobj,
+					     struct attribute *attr,
+					     const char *buffer, size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	time64_t val;
+	int rc;
+
+	rc = kstrtoll(buffer, 10, &val);
+	if (rc)
+		return rc;
+
+	/* as it sounds reasonable, do not allow a user to be idle since
+	 * more than about 68 years, this will allow to use 32bits
+	 * timestamps for comparison
+	 */
+	if (val < 1 || val > INT_MAX)
+		return -ERANGE;
+
+	mdd->mdd_changelog_max_idle_time = val;
+
+	return count;
+}
+LUSTRE_RW_ATTR(changelog_max_idle_time);
+
+static ssize_t changelog_max_idle_indexes_show(struct kobject *kobj,
+					       struct attribute *attr,
+					       char *buf)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return sprintf(buf, "%lu\n", mdd->mdd_changelog_max_idle_indexes);
+}
+
+static ssize_t changelog_max_idle_indexes_store(struct kobject *kobj,
+						struct attribute *attr,
+						const char *buffer,
+						size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	unsigned long val;
 	int rc;
 
 	LASSERT(mdd != NULL);
-	rc = lprocfs_write_helper(buffer, count, &val);
-	if (rc != 0)
+	rc = kstrtoul(buffer, 0, &val);
+	if (rc)
 		return rc;
 
-	lfsck = &mdd->mdd_lfsck;
-	if (val != lfsck->ml_bookmark_ram.lb_speed_limit) {
-		struct lu_env env;
+	/* XXX may need to limit/check with reasonable elapsed/idle indexes */
+	/* XXX may better allow to specify a % of full ChangeLogs */
 
-		rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
-		if (rc != 0)
-			return rc;
+	mdd->mdd_changelog_max_idle_indexes = val;
 
-		rc = mdd_lfsck_set_speed(&env, lfsck, val);
-		lu_env_fini(&env);
-	}
+	return count;
+}
+LUSTRE_RW_ATTR(changelog_max_idle_indexes);
+
+static ssize_t changelog_min_gc_interval_show(struct kobject *kobj,
+					      struct attribute *attr,
+					      char *buf)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return sprintf(buf, "%lld\n", mdd->mdd_changelog_min_gc_interval);
+}
+
+static ssize_t changelog_min_gc_interval_store(struct kobject *kobj,
+					       struct attribute *attr,
+					       const char *buffer,
+					       size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	time64_t val;
+	int rc;
+
+	rc = kstrtoll(buffer, 10, &val);
+	if (rc)
+		return rc;
+
+	/* XXX may need to limit with reasonable elapsed/interval times */
+	if (val < 1)
+		return -ERANGE;
+
+	mdd->mdd_changelog_min_gc_interval = val;
+
+	return count;
+}
+LUSTRE_RW_ATTR(changelog_min_gc_interval);
+
+static ssize_t changelog_min_free_cat_entries_show(struct kobject *kobj,
+						   struct attribute *attr,
+						   char *buf)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return sprintf(buf, "%u\n", mdd->mdd_changelog_min_free_cat_entries);
+}
+
+static ssize_t changelog_min_free_cat_entries_store(struct kobject *kobj,
+						    struct attribute *attr,
+						    const char *buffer,
+						    size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	unsigned int val;
+	int rc;
+
+	rc = kstrtouint(buffer, 10, &val);
+	if (rc)
+		return rc;
+
+	/* XXX may need to limit with more reasonable number of free entries */
+	if (val < 1)
+		return -ERANGE;
+
+	mdd->mdd_changelog_min_free_cat_entries = val;
+
+	return count;
+}
+LUSTRE_RW_ATTR(changelog_min_free_cat_entries);
+
+static ssize_t changelog_deniednext_show(struct kobject *kobj,
+					 struct attribute *attr,
+					 char *buf)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return sprintf(buf, "%u\n", mdd->mdd_cl.mc_deniednext);
+}
+
+static ssize_t changelog_deniednext_store(struct kobject *kobj,
+					  struct attribute *attr,
+					  const char *buffer,
+					  size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	unsigned int time = 0;
+	int rc;
+
+	rc = kstrtouint(buffer, 0, &time);
+	if (rc)
+		return rc;
+
+	mdd->mdd_cl.mc_deniednext = time;
+	return count;
+}
+LUSTRE_RW_ATTR(changelog_deniednext);
+
+static ssize_t sync_permission_show(struct kobject *kobj,
+				    struct attribute *attr, char *buf)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return sprintf(buf, "%d\n", mdd->mdd_sync_permission);
+}
+
+static ssize_t sync_permission_store(struct kobject *kobj,
+				     struct attribute *attr,
+				     const char *buffer, size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	bool val;
+	int rc;
+
+	rc = kstrtobool(buffer, &val);
+	if (rc)
+		return rc;
+
+	mdd->mdd_sync_permission = val;
+
+	return count;
+}
+LUSTRE_RW_ATTR(sync_permission);
+
+static ssize_t lfsck_speed_limit_show(struct kobject *kobj,
+				      struct attribute *attr, char *buf)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return lfsck_get_speed(buf, mdd->mdd_bottom);
+}
+
+static ssize_t lfsck_speed_limit_store(struct kobject *kobj,
+				       struct attribute *attr,
+				       const char *buffer, size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	unsigned int val;
+	int rc;
+
+	rc = kstrtouint(buffer, 10, &val);
+	if (rc != 0)
+		return rc;
+
+	rc = lfsck_set_speed(mdd->mdd_bottom, val);
 	return rc != 0 ? rc : count;
 }
+LUSTRE_RW_ATTR(lfsck_speed_limit);
 
-static int lprocfs_rd_lfsck_namespace(char *page, char **start, off_t off,
-				      int count, int *eof, void *data)
+static ssize_t lfsck_async_windows_show(struct kobject *kobj,
+					struct attribute *attr, char *buf)
 {
-	struct lu_env env;
-	struct mdd_device *mdd = data;
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return lfsck_get_windows(buf, mdd->mdd_bottom);
+}
+
+static ssize_t lfsck_async_windows_store(struct kobject *kobj,
+					 struct attribute *attr,
+					 const char *buffer, size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	unsigned int val;
 	int rc;
 
+	rc = kstrtouint(buffer, 10, &val);
+	if (rc)
+		return rc;
+
+	rc = lfsck_set_windows(mdd->mdd_bottom, val);
+
+	return rc != 0 ? rc : count;
+}
+LUSTRE_RW_ATTR(lfsck_async_windows);
+
+static int mdd_lfsck_namespace_seq_show(struct seq_file *m, void *data)
+{
+	struct mdd_device *mdd = m->private;
+
 	LASSERT(mdd != NULL);
-	*eof = 1;
 
-	rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
-	if (rc != 0)
+	return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_NAMESPACE);
+}
+LDEBUGFS_SEQ_FOPS_RO(mdd_lfsck_namespace);
+
+static int mdd_lfsck_layout_seq_show(struct seq_file *m, void *data)
+{
+	struct mdd_device *mdd = m->private;
+
+	LASSERT(mdd != NULL);
+
+	return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_LAYOUT);
+}
+LDEBUGFS_SEQ_FOPS_RO(mdd_lfsck_layout);
+
+/**
+ * Show default number of stripes for O_APPEND files.
+ *
+ * \param[in] m		seq file
+ * \param[in] v		unused for single entry
+ *
+ * \retval 0		on success,
+ * \retval negative	error code if failed
+ */
+static ssize_t append_stripe_count_show(struct kobject *kobj,
+					struct attribute *attr, char *buf)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", mdd->mdd_append_stripe_count);
+}
+
+/**
+ * Set default number of stripes for O_APPEND files.
+ *
+ * \param[in] file	proc file
+ * \param[in] buffer	string containing the default number of stripes
+ *			for new files
+ * \param[in] count	@buffer length
+ * \param[in] off	unused for single entry
+ *
+ * \retval @count	on success
+ * \retval negative	error code otherwise
+ */
+static ssize_t append_stripe_count_store(struct kobject *kobj,
+					 struct attribute *attr,
+					 const char *buffer, size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	int stripe_count;
+	int rc;
+
+	rc = kstrtoint(buffer, 0, &stripe_count);
+	if (rc)
 		return rc;
 
-	rc = mdd_lfsck_dump(&env, &mdd->mdd_lfsck, LT_NAMESPACE, page, count);
-	lu_env_fini(&env);
-	return rc;
+	if (stripe_count < -1)
+		return -ERANGE;
+
+	mdd->mdd_append_stripe_count = stripe_count;
+
+	return count;
 }
+LUSTRE_RW_ATTR(append_stripe_count);
+
+/**
+ * Show default OST pool for O_APPEND files.
+ *
+ * \param[in] kobject	proc object
+ * \param[in] attribute proc attribute
+ * \param[in] buf	output buffer
+ *
+ * \retval 0		on success,
+ * \retval negative	error code if failed
+ */
+static ssize_t append_pool_show(struct kobject *kobj,
+				struct attribute *attr, char *buf)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	return snprintf(buf, LOV_MAXPOOLNAME + 1, "%s\n", mdd->mdd_append_pool);
+}
+
+/**
+ * Set default OST pool for O_APPEND files.
+ *
+ * \param[in] kobject	proc object
+ * \param[in] attribute proc attribute
+ * \param[in] buffer	user inputted pool name
+ * \param[in] count	@buffer length
+ *
+ * \retval @count	on success
+ * \retval negative	error code otherwise
+ */
+static ssize_t append_pool_store(struct kobject *kobj, struct attribute *attr,
+				 const char *buffer, size_t count)
+{
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+
+	if (!count || count > LOV_MAXPOOLNAME + 1)
+		return -EINVAL;
+
+	/* clear previous value */
+	memset(mdd->mdd_append_pool, 0, LOV_MAXPOOLNAME + 1);
+
+	/* entering "none" clears the pool, otherwise copy the new pool */
+	if (strncmp("none", buffer, 4)) {
+		memcpy(mdd->mdd_append_pool, buffer, count);
+
+		/* Trim the trailing '\n' if any */
+		if (mdd->mdd_append_pool[count - 1] == '\n') {
+			/* Don't echo just a newline */
+			if (count == 1)
+				return -EINVAL;
+			mdd->mdd_append_pool[count - 1] = 0;
+		}
+	}
+
+	return count;
+}
+LUSTRE_RW_ATTR(append_pool);
 
 static struct lprocfs_vars lprocfs_mdd_obd_vars[] = {
-        { "atime_diff",      lprocfs_rd_atime_diff, lprocfs_wr_atime_diff, 0 },
-        { "changelog_mask",  lprocfs_rd_changelog_mask,
-                             lprocfs_wr_changelog_mask, 0 },
-        { "changelog_users", lprocfs_rd_changelog_users, 0, 0},
-        { "sync_permission", lprocfs_rd_sync_perm, lprocfs_wr_sync_perm, 0 },
-	{ "lfsck_speed_limit", lprocfs_rd_lfsck_speed_limit,
-			       lprocfs_wr_lfsck_speed_limit, 0 },
-	{ "lfsck_namespace", lprocfs_rd_lfsck_namespace, 0, 0 },
-	{ 0 }
+	{ .name =	"changelog_mask",
+	  .fops =	&mdd_changelog_mask_fops	},
+	{ .name =	"changelog_users",
+	  .fops =	&mdd_changelog_users_fops	},
+	{ .name =	"lfsck_namespace",
+	  .fops =	&mdd_lfsck_namespace_fops	},
+	{ .name	=	"lfsck_layout",
+	  .fops	=	&mdd_lfsck_layout_fops		},
+	{ NULL }
 };
 
-static struct lprocfs_vars lprocfs_mdd_module_vars[] = {
-        { "num_refs",   lprocfs_rd_numrefs, 0, 0 },
-        { 0 }
+static struct attribute *mdd_attrs[] = {
+	&lustre_attr_uuid.attr,
+	&lustre_attr_atime_diff.attr,
+	&lustre_attr_changelog_size.attr,
+	&lustre_attr_changelog_gc.attr,
+	&lustre_attr_changelog_max_idle_time.attr,
+	&lustre_attr_changelog_max_idle_indexes.attr,
+	&lustre_attr_changelog_min_gc_interval.attr,
+	&lustre_attr_changelog_min_free_cat_entries.attr,
+	&lustre_attr_changelog_deniednext.attr,
+	&lustre_attr_lfsck_async_windows.attr,
+	&lustre_attr_lfsck_speed_limit.attr,
+	&lustre_attr_sync_permission.attr,
+	&lustre_attr_append_stripe_count.attr,
+	&lustre_attr_append_pool.attr,
+	NULL,
 };
 
-void lprocfs_mdd_init_vars(struct lprocfs_static_vars *lvars)
+static void mdd_sysfs_release(struct kobject *kobj)
 {
-        lvars->module_vars  = lprocfs_mdd_module_vars;
-        lvars->obd_vars     = lprocfs_mdd_obd_vars;
+	struct mdd_device *mdd = container_of(kobj, struct mdd_device,
+					      mdd_kobj);
+	struct obd_device *obd = mdd2obd_dev(mdd);
+
+	debugfs_remove_recursive(obd->obd_debugfs_entry);
+	obd->obd_debugfs_entry = NULL;
+
+	complete(&mdd->mdd_kobj_unregister);
+}
+
+int mdd_procfs_init(struct mdd_device *mdd, const char *name)
+{
+	struct obd_device *obd = mdd2obd_dev(mdd);
+	struct obd_type *type;
+	int rc;
+
+	ENTRY;
+	/* at the moment there is no linkage between lu_type
+	 * and obd_type, so we lookup obd_type this way
+	 */
+	type = class_search_type(LUSTRE_MDD_NAME);
+
+	LASSERT(name != NULL);
+	LASSERT(type != NULL);
+	LASSERT(obd  != NULL);
+
+	/* put reference taken by class_search_type */
+	kobject_put(&type->typ_kobj);
+
+	mdd->mdd_ktype.default_attrs = mdd_attrs;
+	mdd->mdd_ktype.release = mdd_sysfs_release;
+	mdd->mdd_ktype.sysfs_ops = &lustre_sysfs_ops;
+
+	init_completion(&mdd->mdd_kobj_unregister);
+	rc = kobject_init_and_add(&mdd->mdd_kobj, &mdd->mdd_ktype,
+				  &type->typ_kobj, "%s", name);
+	if (rc)
+		return rc;
+
+	/* Find the type procroot and add the proc entry for this device */
+	obd->obd_vars = lprocfs_mdd_obd_vars;
+	obd->obd_debugfs_entry = ldebugfs_register(name,
+						   type->typ_debugfs_entry,
+						   obd->obd_vars, mdd);
+	if (IS_ERR_OR_NULL(obd->obd_debugfs_entry)) {
+		rc = obd->obd_debugfs_entry ? PTR_ERR(obd->obd_debugfs_entry)
+					    : -ENOMEM;
+		CERROR("Error %d setting up debugfs for %s\n",
+		       rc, name);
+		obd->obd_debugfs_entry = NULL;
+
+		kobject_put(&mdd->mdd_kobj);
+	}
+
+	RETURN(rc);
 }
 
+void mdd_procfs_fini(struct mdd_device *mdd)
+{
+	kobject_put(&mdd->mdd_kobj);
+	wait_for_completion(&mdd->mdd_kobj_unregister);
+}