LU-7156 mdd: add changelog_size to procfs

[fs/lustre-release.git] / lustre / mdd / mdd_lproc.c

diff --git a/lustre/mdd/mdd_lproc.c b/lustre/mdd/mdd_lproc.c
index 1329852..1990ae1 100644 (file)
--- a/lustre/mdd/mdd_lproc.c
+++ b/lustre/mdd/mdd_lproc.c
@@ -178,6 +178,57 @@ static int mdd_changelog_users_seq_show(struct seq_file *m, void *data)
 }
 LPROC_SEQ_FOPS_RO(mdd_changelog_users);
 
+static int mdd_changelog_size_ctxt(const struct lu_env *env,
+                                  struct mdd_device *mdd,
+                                  int index, __u64 *val)
+{
+       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);
+
+       llog_ctxt_put(ctxt);
+
+       return 0;
+}
+
+static int mdd_changelog_size_seq_show(struct seq_file *m, void *data)
+{
+       struct lu_env            env;
+       struct mdd_device       *mdd = m->private;
+       __u64                    tmp = 0;
+       int                      rc;
+
+       rc = lu_env_init(&env, LCT_LOCAL);
+       if (rc)
+               return rc;
+
+       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);
+
+       seq_printf(m, LPU64"\n", tmp);
+       lu_env_fini(&env);
+       return rc;
+}
+LPROC_SEQ_FOPS_RO(mdd_changelog_size);
+
 static int mdd_sync_perm_seq_show(struct seq_file *m, void *data)
 {
        struct mdd_device *mdd = m->private;
@@ -285,6 +336,8 @@ static struct lprocfs_vars lprocfs_mdd_obd_vars[] = {
          .fops =       &mdd_changelog_mask_fops        },
        { .name =       "changelog_users",
          .fops =       &mdd_changelog_users_fops       },
+       { .name =       "changelog_size",
+         .fops =       &mdd_changelog_size_fops        },
        { .name =       "sync_permission",
          .fops =       &mdd_sync_perm_fops             },
        { .name =       "lfsck_speed_limit",