LU-3285 merge: 'dom' branch merging

[fs/lustre-release.git] / lustre / lod / lproc_lod.c

diff --git a/lustre/lod/lproc_lod.c b/lustre/lod/lproc_lod.c
index ea17bac..3e23ec8 100644 (file)
--- a/lustre/lod/lproc_lod.c
+++ b/lustre/lod/lproc_lod.c
@@ -54,6 +54,69 @@
  * \retval 0           on success
  * \retval negative    error code if failed
  */
+static int lod_dom_stripesize_seq_show(struct seq_file *m, void *v)
+{
+       struct obd_device *dev = m->private;
+       struct lod_device *lod;
+
+       LASSERT(dev != NULL);
+       lod  = lu2lod_dev(dev->obd_lu_dev);
+       seq_printf(m, "%u\n", lod->lod_dom_max_stripesize);
+       return 0;
+}
+
+/**
+ * Set default stripe size.
+ *
+ * \param[in] file     proc file
+ * \param[in] buffer   string containing the maximum number of bytes stored in
+ *                     each object before moving to the next object in the
+ *                     layout (if any)
+ * \param[in] count    @buffer length
+ * \param[in] off      unused for single entry
+ *
+ * \retval @count      on success
+ * \retval negative    error code if failed
+ */
+static ssize_t
+lod_dom_stripesize_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 *dev = m->private;
+       struct lod_device *lod;
+       __s64 val;
+       int rc;
+
+       LASSERT(dev != NULL);
+       lod  = lu2lod_dev(dev->obd_lu_dev);
+       rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
+       if (rc)
+               return rc;
+       if (val < 0)
+               return -ERANGE;
+
+       /* */
+       if (val > (1ULL << 30))
+               return -ERANGE;
+       else if (val > 0)
+               lod_fix_desc_stripe_size(&val);
+
+       lod->lod_dom_max_stripesize = val;
+
+       return count;
+}
+LPROC_SEQ_FOPS(lod_dom_stripesize);
+
+/**
+ * Show default stripe size.
+ *
+ * \param[in] m                seq file
+ * \param[in] v                unused for single entry
+ *
+ * \retval 0           on success
+ * \retval negative    error code if failed
+ */
 static int lod_stripesize_seq_show(struct seq_file *m, void *v)
 {
        struct obd_device *dev = m->private;
@@ -757,6 +820,10 @@ static struct lprocfs_vars lprocfs_lod_obd_vars[] = {
          .fops =       &lod_qos_maxage_fops    },
        { .name =       "lmv_failout",
          .fops =       &lod_lmv_failout_fops   },
+       {
+         .name = "dom_stripesize",
+         .fops = &lod_dom_stripesize_fops
+       },
        { NULL }
 };