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LU-12616 obclass: fix MDS start/stop race
[fs/lustre-release.git] / lustre / ofd / lproc_ofd.c
index 27fa94d..abc67a8 100644 (file)
@@ -23,7 +23,7 @@
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, 2016, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
  * \retval             0 on success
  * \retval             negative value on error
  */
-static int ofd_seqs_seq_show(struct seq_file *m, void *data)
+static ssize_t seqs_allocated_show(struct kobject *kobj, struct attribute *attr,
+                                  char *buf)
 {
-       struct obd_device *obd = m->private;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
        struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
 
-       seq_printf(m, "%u\n", ofd->ofd_seq_count);
-       return 0;
+       return sprintf(buf, "%u\n", ofd->ofd_seq_count);
 }
-LPROC_SEQ_FOPS_RO(ofd_seqs);
+LUSTRE_RO_ATTR(seqs_allocated);
 
 /**
  * Show total number of grants for precreate.
@@ -78,16 +79,17 @@ LPROC_SEQ_FOPS_RO(ofd_seqs);
  * \retval             0 on success
  * \retval             negative value on error
  */
-static int ofd_grant_precreate_seq_show(struct seq_file *m, void *data)
+static ssize_t grant_precreate_show(struct kobject *kobj,
+                                   struct attribute *attr,
+                                   char *buf)
 {
-       struct obd_device *obd = m->private;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
 
-       LASSERT(obd != NULL);
-       seq_printf(m, "%ld\n",
-                  obd->obd_self_export->exp_target_data.ted_grant);
-       return 0;
+       return sprintf(buf, "%ld\n",
+                      obd->obd_self_export->exp_target_data.ted_grant);
 }
-LPROC_SEQ_FOPS_RO(ofd_grant_precreate);
+LUSTRE_RO_ATTR(grant_precreate);
 
 /**
  * Show number of precreates allowed in a single transaction.
@@ -98,15 +100,15 @@ LPROC_SEQ_FOPS_RO(ofd_grant_precreate);
  * \retval             0 on success
  * \retval             negative value on error
  */
-static int ofd_precreate_batch_seq_show(struct seq_file *m, void *data)
+static ssize_t precreate_batch_show(struct kobject *kobj,
+                                   struct attribute *attr,
+                                   char *buf)
 {
-       struct obd_device *obd = m->private;
-       struct ofd_device *ofd;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
 
-       LASSERT(obd != NULL);
-       ofd = ofd_dev(obd->obd_lu_dev);
-       seq_printf(m, "%d\n", ofd->ofd_precreate_batch);
-       return 0;
+       return sprintf(buf, "%d\n", ofd->ofd_precreate_batch);
 }
 
 /**
@@ -120,21 +122,21 @@ static int ofd_precreate_batch_seq_show(struct seq_file *m, void *data)
  * \retval             \a count on success
  * \retval             negative number on error
  */
-static ssize_t
-ofd_precreate_batch_seq_write(struct file *file, const char __user *buffer,
-                             size_t count, loff_t *off)
+static ssize_t precreate_batch_store(struct kobject *kobj,
+                                    struct attribute *attr,
+                                    const char *buffer, size_t count)
 {
-       struct seq_file *m = file->private_data;
-       struct obd_device *obd = m->private;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
        struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
-       __s64 val;
+       unsigned int val;
        int rc;
 
-       rc = lprocfs_str_to_s64(buffer, count, &val);
+       rc = kstrtouint(buffer, 0, &val);
        if (rc)
                return rc;
 
-       if (val < 1 || val > INT_MAX)
+       if (val < 1 || val > 65536)
                return -EINVAL;
 
        spin_lock(&ofd->ofd_batch_lock);
@@ -142,7 +144,7 @@ ofd_precreate_batch_seq_write(struct file *file, const char __user *buffer,
        spin_unlock(&ofd->ofd_batch_lock);
        return count;
 }
-LPROC_SEQ_FOPS(ofd_precreate_batch);
+LUSTRE_RW_ATTR(precreate_batch);
 
 /**
  * Show the last used ID for each FID sequence used by OFD.
@@ -177,118 +179,8 @@ static int ofd_last_id_seq_show(struct seq_file *m, void *data)
        read_unlock(&ofd->ofd_seq_list_lock);
        return 0;
 }
-LPROC_SEQ_FOPS_RO(ofd_last_id);
-
-/**
- * Show maximum number of Filter Modification Data (FMD) maintained by OFD.
- *
- * \param[in] m                seq_file handle
- * \param[in] data     unused for single entry
- *
- * \retval             0 on success
- * \retval             negative value on error
- */
-static int ofd_fmd_max_num_seq_show(struct seq_file *m, void *data)
-{
-       struct obd_device *obd = m->private;
-       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
-
-       seq_printf(m, "%u\n", ofd->ofd_fmd_max_num);
-       return 0;
-}
-
-/**
- * Change number of FMDs maintained by OFD.
- *
- * This defines how large the list of FMDs can be.
- *
- * \param[in] file     proc file
- * \param[in] buffer   string which represents maximum number
- * \param[in] count    \a buffer length
- * \param[in] off      unused for single entry
- *
- * \retval             \a count on success
- * \retval             negative number on error
- */
-static ssize_t
-ofd_fmd_max_num_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 ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
-       __s64 val;
-       int rc;
-
-       rc = lprocfs_str_to_s64(buffer, count, &val);
-       if (rc)
-               return rc;
-
-       if (val > 65536 || val < 1)
-               return -EINVAL;
-
-       ofd->ofd_fmd_max_num = val;
-       return count;
-}
-LPROC_SEQ_FOPS(ofd_fmd_max_num);
-
-/**
- * Show the maximum age of FMD data in seconds.
- *
- * Though it is shown in seconds, it is stored internally in units
- * of jiffies for efficiency.
- *
- * \param[in] m                seq_file handle
- * \param[in] data     unused for single entry
- *
- * \retval             0 on success
- * \retval             negative value on error
- */
-static int ofd_fmd_max_age_seq_show(struct seq_file *m, void *data)
-{
-       struct obd_device *obd = m->private;
-       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
-
-       seq_printf(m, "%ld\n", jiffies_to_msecs(ofd->ofd_fmd_max_age) /
-                  MSEC_PER_SEC);
-       return 0;
-}
-
-/**
- * Set the maximum age of FMD data in seconds.
- *
- * This defines how long FMD data stays in the FMD list.
- * It is stored internally in units of jiffies for efficiency.
- *
- * \param[in] file     proc file
- * \param[in] buffer   string which represents maximum number
- * \param[in] count    \a buffer length
- * \param[in] off      unused for single entry
- *
- * \retval             \a count on success
- * \retval             negative number on error
- */
-static ssize_t
-ofd_fmd_max_age_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 ofd_device       *ofd = ofd_dev(obd->obd_lu_dev);
-       __s64                    val;
-       int                      rc;
-
-       rc = lprocfs_str_to_s64(buffer, count, &val);
-       if (rc)
-               return rc;
-
-       if (val > 65536 || val < 1)
-               return -EINVAL;
 
-       ofd->ofd_fmd_max_age = msecs_to_jiffies(val * MSEC_PER_SEC);
-       return count;
-}
-LPROC_SEQ_FOPS(ofd_fmd_max_age);
+LPROC_SEQ_FOPS_RO(ofd_last_id);
 
 /**
  * Show if the OFD is in degraded mode.
@@ -305,13 +197,14 @@ LPROC_SEQ_FOPS(ofd_fmd_max_age);
  * \retval             0 on success
  * \retval             negative value on error
  */
-static int ofd_degraded_seq_show(struct seq_file *m, void *data)
+static ssize_t degraded_show(struct kobject *kobj, struct attribute *attr,
+                            char *buf)
 {
-       struct obd_device *obd = m->private;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
        struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
 
-       seq_printf(m, "%u\n", ofd->ofd_raid_degraded);
-       return 0;
+       return sprintf(buf, "%u\n", ofd->ofd_raid_degraded);
 }
 
 /**
@@ -331,26 +224,25 @@ static int ofd_degraded_seq_show(struct seq_file *m, void *data)
  * \retval             \a count on success
  * \retval             negative number on error
  */
-static ssize_t
-ofd_degraded_seq_write(struct file *file, const char __user *buffer,
-                      size_t count, loff_t *off)
+static ssize_t degraded_store(struct kobject *kobj, struct attribute *attr,
+                             const char *buffer, size_t count)
 {
-       struct seq_file *m = file->private_data;
-       struct obd_device *obd = m->private;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
        struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+       bool val;
        int rc;
-       __s64 val;
 
-       rc = lprocfs_str_to_s64(buffer, count, &val);
+       rc = kstrtobool(buffer, &val);
        if (rc)
                return rc;
 
        spin_lock(&ofd->ofd_flags_lock);
-       ofd->ofd_raid_degraded = !!val;
+       ofd->ofd_raid_degraded = val;
        spin_unlock(&ofd->ofd_flags_lock);
        return count;
 }
-LPROC_SEQ_FOPS(ofd_degraded);
+LUSTRE_RW_ATTR(degraded);
 
 /**
  * Show OFD filesystem type.
@@ -361,19 +253,20 @@ LPROC_SEQ_FOPS(ofd_degraded);
  * \retval             0 on success
  * \retval             negative value on error
  */
-static int ofd_fstype_seq_show(struct seq_file *m, void *data)
+static ssize_t fstype_show(struct kobject *kobj, struct attribute *attr,
+                          char *buf)
 {
-       struct obd_device *obd = m->private;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
        struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
        struct lu_device  *d;
 
        LASSERT(ofd->ofd_osd);
        d = &ofd->ofd_osd->dd_lu_dev;
        LASSERT(d->ld_type);
-       seq_printf(m, "%s\n", d->ld_type->ldt_name);
-       return 0;
+       return sprintf(buf, "%s\n", d->ld_type->ldt_name);
 }
-LPROC_SEQ_FOPS_RO(ofd_fstype);
+LUSTRE_RO_ATTR(fstype);
 
 /**
  * Show journal handling mode: synchronous or asynchronous.
@@ -392,13 +285,14 @@ LPROC_SEQ_FOPS_RO(ofd_fstype);
  * \retval             0 on success
  * \retval             negative value on error
  */
-static int ofd_syncjournal_seq_show(struct seq_file *m, void *data)
+static ssize_t sync_journal_show(struct kobject *kobj, struct attribute *attr,
+                               char *buf)
 {
-       struct obd_device       *obd = m->private;
-       struct ofd_device       *ofd = ofd_dev(obd->obd_lu_dev);
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
 
-       seq_printf(m, "%u\n", ofd->ofd_syncjournal);
-       return 0;
+       return sprintf(buf, "%u\n", ofd->ofd_sync_journal);
 }
 
 /**
@@ -414,34 +308,27 @@ static int ofd_syncjournal_seq_show(struct seq_file *m, void *data)
  * \retval             \a count on success
  * \retval             negative number on error
  */
-static ssize_t
-ofd_syncjournal_seq_write(struct file *file, const char __user *buffer,
-                         size_t count, loff_t *off)
+static ssize_t sync_journal_store(struct kobject *kobj, struct attribute *attr,
+                                const char *buffer, size_t count)
 {
-       struct seq_file *m = file->private_data;
-       struct obd_device *obd = m->private;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
        struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
-       __s64 val;
+       bool val;
        int rc;
 
-       rc = lprocfs_str_to_s64(buffer, count, &val);
+       rc = kstrtobool(buffer, &val);
        if (rc)
                return rc;
 
-       if (val < 0)
-               return -EINVAL;
-
        spin_lock(&ofd->ofd_flags_lock);
-       ofd->ofd_syncjournal = !!val;
+       ofd->ofd_sync_journal = val;
        ofd_slc_set(ofd);
        spin_unlock(&ofd->ofd_flags_lock);
 
        return count;
 }
-LPROC_SEQ_FOPS(ofd_syncjournal);
-
-/* This must be longer than the longest string below */
-#define SYNC_STATES_MAXLEN 16
+LUSTRE_RW_ATTR(sync_journal);
 
 static int ofd_brw_size_seq_show(struct seq_file *m, void *data)
 {
@@ -479,96 +366,8 @@ ofd_brw_size_seq_write(struct file *file, const char __user *buffer,
 
        return count;
 }
-LPROC_SEQ_FOPS(ofd_brw_size);
-
-static char *sync_on_cancel_states[] = {"never",
-                                       "blocking",
-                                       "always" };
-
-/**
- * Show OFD policy for handling dirty data 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 ofd_sync_lock_cancel_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, "%s\n",
-                  sync_on_cancel_states[tgt->lut_sync_lock_cancel]);
-       return 0;
-}
-
-/**
- * Change OFD policy for handling dirty data under a lock being cancelled.
- *
- * This variable defines what action OFD takes upon lock cancel
- * There are three possible modes:
- * 1) never - never do sync upon lock cancel. This can lead to data
- *    inconsistencies if both the OST and client crash while writing a file
- *    that is also concurrently being read by another client. In these cases,
- *    this may allow the file data to "rewind" to an earlier state.
- * 2) blocking - do sync only if there is blocking lock, e.g. if another
- *    client is trying to access this same object
- * 3) always - do sync always
- *
- * \param[in] file     proc file
- * \param[in] buffer   string which represents policy
- * \param[in] count    \a buffer length
- * \param[in] off      unused for single entry
- *
- * \retval             \a count on success
- * \retval             negative number on error
- */
-static ssize_t
-ofd_sync_lock_cancel_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;
-       char kernbuf[SYNC_STATES_MAXLEN];
-       __s64 val = -1;
-       int i;
 
-       if (count == 0 || count >= sizeof(kernbuf))
-               return -EINVAL;
-
-       if (copy_from_user(kernbuf, buffer, count))
-               return -EFAULT;
-       kernbuf[count] = 0;
-
-       if (kernbuf[count - 1] == '\n')
-               kernbuf[count - 1] = 0;
-
-       for (i = 0 ; i < NUM_SYNC_ON_CANCEL_STATES; i++) {
-               if (strcmp(kernbuf, sync_on_cancel_states[i]) == 0) {
-                       val = i;
-                       break;
-               }
-       }
-
-       /* Legacy numeric codes */
-       if (val == -1) {
-               int rc = lprocfs_str_to_s64(buffer, count, &val);
-               if (rc)
-                       return rc;
-       }
-
-       if (val < 0 || val > 2)
-               return -EINVAL;
-
-       spin_lock(&tgt->lut_flags_lock);
-       tgt->lut_sync_lock_cancel = val;
-       spin_unlock(&tgt->lut_flags_lock);
-       return count;
-}
-LPROC_SEQ_FOPS(ofd_sync_lock_cancel);
+LPROC_SEQ_FOPS(ofd_brw_size);
 
 /**
  * Show the limit of soft sync RPCs.
@@ -582,12 +381,14 @@ LPROC_SEQ_FOPS(ofd_sync_lock_cancel);
  * \retval             0 on success
  * \retval             negative value on error
  */
-static int ofd_soft_sync_limit_seq_show(struct seq_file *m, void *data)
+static ssize_t soft_sync_limit_show(struct kobject *kobj,
+                                   struct attribute *attr, char *buf)
 {
-       struct obd_device       *obd = m->private;
-       struct ofd_device       *ofd = ofd_dev(obd->obd_lu_dev);
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
 
-       return lprocfs_uint_seq_show(m, &ofd->ofd_soft_sync_limit);
+       return sprintf(buf, "%u\n", ofd->ofd_soft_sync_limit);
 }
 
 /**
@@ -606,18 +407,24 @@ static int ofd_soft_sync_limit_seq_show(struct seq_file *m, void *data)
  * \retval             \a count on success
  * \retval             negative number on error
  */
-static ssize_t
-ofd_soft_sync_limit_seq_write(struct file *file, const char __user *buffer,
-                             size_t count, loff_t *off)
+static ssize_t soft_sync_limit_store(struct kobject *kobj,
+                                    struct attribute *attr,
+                                    const char *buffer, size_t count)
 {
-       struct seq_file   *m = file->private_data;
-       struct obd_device *obd = m->private;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
        struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+       unsigned int val;
+       int rc;
 
-       return lprocfs_uint_seq_write(file, buffer, count,
-                                     (loff_t *) &ofd->ofd_soft_sync_limit);
+       rc = kstrtouint(buffer, 0, &val);
+       if (rc < 0)
+               return rc;
+
+       ofd->ofd_soft_sync_limit = val;
+       return 0;
 }
-LPROC_SEQ_FOPS(ofd_soft_sync_limit);
+LUSTRE_RW_ATTR(soft_sync_limit);
 
 /**
  * Show the LFSCK speed limit.
@@ -630,12 +437,14 @@ LPROC_SEQ_FOPS(ofd_soft_sync_limit);
  * \retval             0 on success
  * \retval             negative value on error
  */
-static int ofd_lfsck_speed_limit_seq_show(struct seq_file *m, void *data)
+static ssize_t lfsck_speed_limit_show(struct kobject *kobj,
+                                     struct attribute *attr, char *buf)
 {
-       struct obd_device       *obd = m->private;
-       struct ofd_device       *ofd = ofd_dev(obd->obd_lu_dev);
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
 
-       return lfsck_get_speed(m, ofd->ofd_osd);
+       return lfsck_get_speed(buf, ofd->ofd_osd);
 }
 
 /**
@@ -651,28 +460,25 @@ static int ofd_lfsck_speed_limit_seq_show(struct seq_file *m, void *data)
  * \retval             \a count on success
  * \retval             negative number on error
  */
-static ssize_t
-ofd_lfsck_speed_limit_seq_write(struct file *file, const char __user *buffer,
-                               size_t count, loff_t *off)
+static ssize_t lfsck_speed_limit_store(struct kobject *kobj,
+                                      struct attribute *attr,
+                                      const char *buffer, size_t count)
 {
-       struct seq_file *m = file->private_data;
-       struct obd_device *obd = m->private;
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
        struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
-       __s64 val;
+       unsigned int val;
        int rc;
 
-       rc = lprocfs_str_to_s64(buffer, count, &val);
+       rc = kstrtouint(buffer, 0, &val);
        if (rc != 0)
                return rc;
 
-       if (val < 0)
-               return -ERANGE;
-
        rc = lfsck_set_speed(ofd->ofd_osd, val);
 
        return rc != 0 ? rc : count;
 }
-LPROC_SEQ_FOPS(ofd_lfsck_speed_limit);
+LUSTRE_RW_ATTR(lfsck_speed_limit);
 
 /**
  * Show LFSCK layout verification stats from the most recent LFSCK run.
@@ -690,6 +496,7 @@ static int ofd_lfsck_layout_seq_show(struct seq_file *m, void *data)
 
        return lfsck_dump(m, ofd->ofd_osd, LFSCK_TYPE_LAYOUT);
 }
+
 LPROC_SEQ_FOPS_RO(ofd_lfsck_layout);
 
 /**
@@ -736,14 +543,14 @@ ofd_lfsck_verify_pfid_seq_write(struct file *file, const char __user *buffer,
        struct seq_file *m = file->private_data;
        struct obd_device *obd = m->private;
        struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
-       __s64 val;
+       bool val;
        int rc;
 
-       rc = lprocfs_str_to_s64(buffer, count, &val);
-       if (rc != 0)
+       rc = kstrtobool_from_user(buffer, count, &val);
+       if (rc)
                return rc;
 
-       ofd->ofd_lfsck_verify_pfid = !!val;
+       ofd->ofd_lfsck_verify_pfid = val;
        if (!ofd->ofd_lfsck_verify_pfid) {
                ofd->ofd_inconsistency_self_detected = 0;
                ofd->ofd_inconsistency_self_repaired = 0;
@@ -751,6 +558,7 @@ ofd_lfsck_verify_pfid_seq_write(struct file *file, const char __user *buffer,
 
        return count;
 }
+
 LPROC_SEQ_FOPS(ofd_lfsck_verify_pfid);
 
 static int ofd_site_stats_seq_show(struct seq_file *m, void *data)
@@ -759,76 +567,225 @@ static int ofd_site_stats_seq_show(struct seq_file *m, void *data)
 
        return lu_site_stats_seq_print(obd->obd_lu_dev->ld_site, m);
 }
+
 LPROC_SEQ_FOPS_RO(ofd_site_stats);
 
+/**
+ * Show if the OFD enforces T10PI checksum.
+ *
+ * \param[in] m                seq_file handle
+ * \param[in] data     unused for single entry
+ *
+ * \retval             0 on success
+ * \retval             negative value on error
+ */
+static ssize_t checksum_t10pi_enforce_show(struct kobject *kobj,
+                                          struct attribute *attr,
+                                          char *buf)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+
+       return sprintf(buf, "%u\n", ofd->ofd_checksum_t10pi_enforce);
+}
+
+/**
+ * Force specific T10PI checksum modes to be enabled
+ *
+ * If T10PI *is* supported in hardware, allow only the supported T10PI type
+ * to be used. If T10PI is *not* supported by the OSD, setting the enforce
+ * parameter forces all T10PI types to be enabled (even if slower) for
+ * testing.
+ *
+ * The final determination of which algorithm to be used depends whether
+ * the client supports T10PI or not, and is handled at client connect time.
+ *
+ * \param[in] file     proc file
+ * \param[in] buffer   string which represents mode
+ *                     1: set T10PI checksums enforced
+ *                     0: unset T10PI checksums enforced
+ * \param[in] count    \a buffer length
+ * \param[in] off      unused for single entry
+ *
+ * \retval             \a count on success
+ * \retval             negative number on error
+ */
+static ssize_t checksum_t10pi_enforce_store(struct kobject *kobj,
+                                           struct attribute *attr,
+                                           const char *buffer, size_t count)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+       bool enforce;
+       int rc;
+
+       rc = kstrtobool(buffer, &enforce);
+       if (rc)
+               return rc;
+
+       spin_lock(&ofd->ofd_flags_lock);
+       ofd->ofd_checksum_t10pi_enforce = enforce;
+       spin_unlock(&ofd->ofd_flags_lock);
+       return count;
+}
+LUSTRE_RW_ATTR(checksum_t10pi_enforce);
+
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 53, 0)
+static bool max_file_warned;
+static bool rd_cache_warned;
+static bool wr_cache_warned;
+
+static ssize_t read_cache_enable_show(struct kobject *kobj,
+                                     struct attribute *attr,
+                                     char *buf)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+
+       if (!rd_cache_warned) {
+               rd_cache_warned = true;
+               pr_info("ofd: 'obdfilter.*.read_cache_enabled' is deprecated, use 'osd-*.read_cache_enabled' instead\n");
+       }
+
+       if (!ofd->ofd_read_cache_enable)
+               return -EOPNOTSUPP;
+
+       return lustre_attr_show(&ofd->ofd_osd->dd_kobj,
+                               ofd->ofd_read_cache_enable, buf);
+}
+
+static ssize_t read_cache_enable_store(struct kobject *kobj,
+                                      struct attribute *attr,
+                                      const char *buffer, size_t count)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+
+       if (!rd_cache_warned) {
+               rd_cache_warned = true;
+               pr_info("ofd: 'obdfilter.*.read_cache_enabled' is deprecated, use 'osd-*.read_cache_enabled' instead\n");
+       }
+
+       if (!ofd->ofd_read_cache_enable)
+               return -EOPNOTSUPP;
+
+       return lustre_attr_store(&ofd->ofd_osd->dd_kobj,
+                                ofd->ofd_read_cache_enable, buffer, count);
+}
+LUSTRE_RW_ATTR(read_cache_enable);
+
+static ssize_t readcache_max_filesize_show(struct kobject *kobj,
+                                          struct attribute *attr,
+                                          char *buf)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+
+       if (!max_file_warned) {
+               max_file_warned = true;
+               pr_info("ofd: 'obdfilter.*.readcache_max_filesize' is deprecated, use 'osd-*.readcache_max_filesize' instead\n");
+       }
+
+       if (!ofd->ofd_read_cache_max_filesize)
+               return -EOPNOTSUPP;
+
+       return lustre_attr_show(&ofd->ofd_osd->dd_kobj,
+                               ofd->ofd_read_cache_max_filesize, buf);
+}
+
+static ssize_t readcache_max_filesize_store(struct kobject *kobj,
+                                           struct attribute *attr,
+                                           const char *buffer, size_t count)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+
+       if (!max_file_warned) {
+               max_file_warned = true;
+               pr_info("ofd: 'obdfilter.*.readcache_max_filesize' is deprecated, use 'osd-*.readcache_max_filesize' instead\n");
+       }
+
+       if (!ofd->ofd_read_cache_max_filesize)
+               return -EOPNOTSUPP;
+
+       return lustre_attr_store(&ofd->ofd_osd->dd_kobj,
+                                ofd->ofd_read_cache_max_filesize,
+                                buffer, count);
+}
+LUSTRE_RW_ATTR(readcache_max_filesize);
+
+static ssize_t writethrough_cache_enable_show(struct kobject *kobj,
+                                             struct attribute *attr,
+                                             char *buf)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+
+       if (!wr_cache_warned) {
+               wr_cache_warned = true;
+               pr_info("ofd: 'obdfilter.*.writethrough_cache_enabled' is deprecated, use 'osd-*.writethrough_cache_enabled' instead\n");
+       }
+
+       if (!ofd->ofd_write_cache_enable)
+               return -EOPNOTSUPP;
+
+       return lustre_attr_show(&ofd->ofd_osd->dd_kobj,
+                               ofd->ofd_write_cache_enable, buf);
+}
+
+static ssize_t writethrough_cache_enable_store(struct kobject *kobj,
+                                              struct attribute *attr,
+                                              const char *buffer, size_t count)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+
+       if (!ofd->ofd_write_cache_enable)
+               return -EOPNOTSUPP;
+
+       return lustre_attr_store(&ofd->ofd_osd->dd_kobj,
+                                ofd->ofd_write_cache_enable,
+                                buffer, count);
+}
+LUSTRE_RW_ATTR(writethrough_cache_enable);
+#endif
+
 LPROC_SEQ_FOPS_RO_TYPE(ofd, recovery_status);
-LPROC_SEQ_FOPS_RW_TYPE(ofd, recovery_time_soft);
-LPROC_SEQ_FOPS_RW_TYPE(ofd, recovery_time_hard);
+LUSTRE_RW_ATTR(recovery_time_hard);
+LUSTRE_RW_ATTR(recovery_time_soft);
+LUSTRE_RW_ATTR(ir_factor);
+
 LPROC_SEQ_FOPS_WR_ONLY(ofd, evict_client);
-LPROC_SEQ_FOPS_RO_TYPE(ofd, num_exports);
-LPROC_SEQ_FOPS_RO_TYPE(ofd, target_instance);
-LPROC_SEQ_FOPS_RW_TYPE(ofd, ir_factor);
 LPROC_SEQ_FOPS_RW_TYPE(ofd, checksum_dump);
-LPROC_SEQ_FOPS_RW_TYPE(ofd, job_interval);
+LUSTRE_RW_ATTR(job_cleanup_interval);
 
-LPROC_SEQ_FOPS_RO(tgt_tot_dirty);
-LPROC_SEQ_FOPS_RO(tgt_tot_granted);
-LPROC_SEQ_FOPS_RO(tgt_tot_pending);
-LPROC_SEQ_FOPS(tgt_grant_compat_disable);
+LUSTRE_RO_ATTR(tot_dirty);
+LUSTRE_RO_ATTR(tot_granted);
+LUSTRE_RO_ATTR(tot_pending);
+LUSTRE_RW_ATTR(grant_compat_disable);
+LUSTRE_RO_ATTR(instance);
+
+LUSTRE_RO_ATTR(num_exports);
 
 struct lprocfs_vars lprocfs_ofd_obd_vars[] = {
-       { .name =       "seqs_allocated",
-         .fops =       &ofd_seqs_fops                  },
-       { .name =       "fstype",
-         .fops =       &ofd_fstype_fops                },
        { .name =       "last_id",
          .fops =       &ofd_last_id_fops               },
-       { .name =       "tot_dirty",
-         .fops =       &tgt_tot_dirty_fops             },
-       { .name =       "tot_pending",
-         .fops =       &tgt_tot_pending_fops           },
-       { .name =       "tot_granted",
-         .fops =       &tgt_tot_granted_fops           },
-       { .name =       "grant_precreate",
-         .fops =       &ofd_grant_precreate_fops       },
-       { .name =       "precreate_batch",
-         .fops =       &ofd_precreate_batch_fops       },
        { .name =       "recovery_status",
          .fops =       &ofd_recovery_status_fops       },
-       { .name =       "recovery_time_soft",
-         .fops =       &ofd_recovery_time_soft_fops    },
-       { .name =       "recovery_time_hard",
-         .fops =       &ofd_recovery_time_hard_fops    },
        { .name =       "evict_client",
          .fops =       &ofd_evict_client_fops          },
-       { .name =       "num_exports",
-         .fops =       &ofd_num_exports_fops           },
-       { .name =       "degraded",
-         .fops =       &ofd_degraded_fops              },
-       { .name =       "sync_journal",
-         .fops =       &ofd_syncjournal_fops           },
        { .name =       "brw_size",
          .fops =       &ofd_brw_size_fops              },
-       { .name =       "sync_on_lock_cancel",
-         .fops =       &ofd_sync_lock_cancel_fops      },
-       { .name =       "instance",
-         .fops =       &ofd_target_instance_fops       },
-       { .name =       "ir_factor",
-         .fops =       &ofd_ir_factor_fops             },
        { .name =       "checksum_dump",
          .fops =       &ofd_checksum_dump_fops         },
-       { .name =       "grant_compat_disable",
-         .fops =       &tgt_grant_compat_disable_fops  },
-       { .name =       "client_cache_count",
-         .fops =       &ofd_fmd_max_num_fops           },
-       { .name =       "client_cache_seconds",
-         .fops =       &ofd_fmd_max_age_fops           },
-       { .name =       "job_cleanup_interval",
-         .fops =       &ofd_job_interval_fops          },
-       { .name =       "soft_sync_limit",
-         .fops =       &ofd_soft_sync_limit_fops       },
-       { .name =       "lfsck_speed_limit",
-         .fops =       &ofd_lfsck_speed_limit_fops     },
        { .name =       "lfsck_layout",
          .fops =       &ofd_lfsck_layout_fops          },
        { .name =       "lfsck_verify_pfid",
@@ -873,4 +830,111 @@ void ofd_stats_counter_init(struct lprocfs_stats *stats)
                             0, "quotactl", "reqs");
 }
 
+LPROC_SEQ_FOPS(lprocfs_nid_stats_clear);
+
+static struct attribute *ofd_attrs[] = {
+       &lustre_attr_tot_dirty.attr,
+       &lustre_attr_tot_granted.attr,
+       &lustre_attr_tot_pending.attr,
+       &lustre_attr_grant_compat_disable.attr,
+       &lustre_attr_instance.attr,
+       &lustre_attr_recovery_time_hard.attr,
+       &lustre_attr_recovery_time_soft.attr,
+       &lustre_attr_ir_factor.attr,
+       &lustre_attr_num_exports.attr,
+       &lustre_attr_seqs_allocated.attr,
+       &lustre_attr_grant_precreate.attr,
+       &lustre_attr_precreate_batch.attr,
+       &lustre_attr_degraded.attr,
+       &lustre_attr_fstype.attr,
+       &lustre_attr_sync_journal.attr,
+       &lustre_attr_soft_sync_limit.attr,
+       &lustre_attr_lfsck_speed_limit.attr,
+       &lustre_attr_job_cleanup_interval.attr,
+       &lustre_attr_checksum_t10pi_enforce.attr,
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 53, 0)
+       &lustre_attr_read_cache_enable.attr,
+       &lustre_attr_readcache_max_filesize.attr,
+       &lustre_attr_writethrough_cache_enable.attr,
+#endif
+       NULL,
+};
+
+/**
+ * Initialize all needed procfs entries for OFD device.
+ *
+ * \param[in] ofd      OFD device
+ *
+ * \retval             0 if successful
+ * \retval             negative value on error
+ */
+int ofd_tunables_init(struct ofd_device *ofd)
+{
+       struct obd_device *obd = ofd_obd(ofd);
+       struct proc_dir_entry *entry;
+       int rc = 0;
+
+       ENTRY;
+       /* lprocfs must be setup before the ofd so state can be safely added
+        * to /proc incrementally as the ofd is setup
+        */
+       obd->obd_ktype.default_attrs = ofd_attrs;
+       obd->obd_vars = lprocfs_ofd_obd_vars;
+       rc = lprocfs_obd_setup(obd, false);
+       if (rc) {
+               CERROR("%s: lprocfs_obd_setup failed: %d.\n",
+                      obd->obd_name, rc);
+               RETURN(rc);
+       }
+
+       rc = tgt_tunables_init(&ofd->ofd_lut);
+       if (rc) {
+               CERROR("%s: tgt_tunables_init failed: rc = %d\n",
+                      obd->obd_name, rc);
+               GOTO(obd_cleanup, rc);
+       }
+
+       rc = lprocfs_alloc_obd_stats(obd, LPROC_OFD_STATS_LAST);
+       if (rc) {
+               CERROR("%s: lprocfs_alloc_obd_stats failed: %d.\n",
+                      obd->obd_name, rc);
+               GOTO(tgt_cleanup, rc);
+       }
+
+       entry = lprocfs_register("exports", obd->obd_proc_entry, NULL, NULL);
+       if (IS_ERR(entry)) {
+               rc = PTR_ERR(entry);
+               CERROR("%s: error %d setting up lprocfs for %s\n",
+                      obd->obd_name, rc, "exports");
+               GOTO(obd_free_stats, rc);
+       }
+       obd->obd_proc_exports_entry = entry;
+
+       entry = lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
+                                  obd, &lprocfs_nid_stats_clear_fops);
+       if (IS_ERR(entry)) {
+               rc = PTR_ERR(entry);
+               CERROR("%s: add proc entry 'clear' failed: %d.\n",
+                      obd->obd_name, rc);
+               GOTO(obd_free_stats, rc);
+       }
+
+       ofd_stats_counter_init(obd->obd_stats);
+
+       rc = lprocfs_job_stats_init(obd, LPROC_OFD_STATS_LAST,
+                                   ofd_stats_counter_init);
+       if (rc)
+               GOTO(obd_free_stats, rc);
+
+       RETURN(0);
+
+obd_free_stats:
+       lprocfs_free_obd_stats(obd);
+tgt_cleanup:
+       tgt_tunables_fini(&ofd->ofd_lut);
+obd_cleanup:
+       lprocfs_obd_cleanup(obd);
+
+       return rc;
+}
 #endif /* CONFIG_PROC_FS */