LU-14777 lod: fix E2BIG on create

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

diff --git a/lustre/lod/lod_lov.c b/lustre/lod/lod_lov.c
index ae80072..ab139b7 100644 (file)
--- a/lustre/lod/lod_lov.c
+++ b/lustre/lod/lod_lov.c
@@ -745,11 +745,18 @@ static int lod_gen_component_ea(const struct lu_env *env,
                        RETURN(-E2BIG);
                objs = &v3->lmm_objects[0];
        }
+       lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
        stripe_count = lod_comp_entry_stripe_count(lo, comp_idx, is_dir);
        if (stripe_count == 0 && !is_dir &&
            !(lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED) &&
-           !(lod_comp->llc_pattern & LOV_PATTERN_MDT))
+           !(lod_comp->llc_pattern & LOV_PATTERN_MDT)) {
+               /* Try again if all active targets are disconnected.
+                * It is possible when MDS does failover. */
+               if (!lod->lod_ost_active_count &&
+                   lod->lod_ost_count)
+                       RETURN(-EAGAIN);
                RETURN(-E2BIG);
+       }
 
        if (!is_dir && lo->ldo_is_composite)
                lod_comp_shrink_stripe_count(lod_comp, &stripe_count);
@@ -758,7 +765,6 @@ static int lod_gen_component_ea(const struct lu_env *env,
                GOTO(done, rc = 0);
 
        /* generate ost_idx of this component stripe */
-       lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
        for (i = 0; i < stripe_count; i++) {
                struct dt_object *object;
                __u32 ost_idx = (__u32)-1UL;