Collect a block-wise histogram of trim and write errors

[fio.git] / filesetup.c

diff --git a/filesetup.c b/filesetup.c
index 79e5df130f34d21ad9afb6491dcd1fc02b014edb..10fc4150804b8fadce1a4af7cb856828796ca1f8 100644 (file)
--- a/filesetup.c
+++ b/filesetup.c
@@ -880,6 +880,27 @@ int setup_files(struct thread_data *td)
                }
        }
 
+       if (td->o.block_error_hist) {
+               int len;
+
+               assert(td->o.nr_files == 1);    /* checked in fixup_options */
+               f = td->files[0];
+               len = f->io_size / td->o.bs[DDIR_TRIM];
+               if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
+                       log_err("fio: cannot calculate block histogram with "
+                               "%d trim blocks, maximum %d\n",
+                               len, MAX_NR_BLOCK_INFOS);
+                       td_verror(td, EINVAL, "block_error_hist");
+                       goto err_out;
+               }
+
+               td->ts.nr_block_infos = len;
+               for (int i = 0; i < len; i++)
+                       td->ts.block_infos[i] =
+                               BLOCK_INFO(0, BLOCK_STATE_UNINIT);
+       } else
+               td->ts.nr_block_infos = 0;
+
        if (!o->size || (total_size && o->size > total_size))
                o->size = total_size;