[LU-6834] idx_array is overwritten in lod_prep_md_striped_create()

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.8.0
• Affects Version/s: Lustre 2.8.0
• Severity: 3
• Assignee: Di Wang
• Reporter: Di Wang

Description

The idx_array is over_written in lod_prep_md_striped_create(), here is the fix

@@ -1895,7 +1895,7 @@ static int lod_prep_md_striped_create(const struct lu_env *env,
                       idx, i, PFID(&fid));
                idx_array[i] = idx;
                /* Set the start index for next stripe allocation */
-               if (i < stripe_count)
+               if (i < stripe_count - 1)
                        idx_array[i + 1] = (idx + 1) %
                                           (lod->lod_remote_mdt_count + 1);
                /* tgt_dt and fid must be ready after search avaible OSP

Otherwise idx_array will be overwritten.

Issue Links

• is related to: LU-6831 The ticket for tracking all DNE2 bugs