LU-14459 mdt: restripe parent may be a stripe

[fs/lustre-release.git] / lustre / mdt / mdt_reint.c

diff --git a/lustre/mdt/mdt_reint.c b/lustre/mdt/mdt_reint.c
index f2952d2..78fcdbd 100644 (file)
--- a/lustre/mdt/mdt_reint.c
+++ b/lustre/mdt/mdt_reint.c
@@ -381,7 +381,7 @@ static int mdt_restripe(struct mdt_thread_info *info,
        if (ma->ma_valid & MA_LMV) {
                /* don't allow restripe if parent dir layout is changing */
                lmv = &ma->ma_lmv->lmv_md_v1;
-               if (!lmv_is_sane(lmv))
+               if (!lmv_is_sane2(lmv))
                        GOTO(unlock_parent, rc = -EBADF);
 
                if (lmv_is_layout_changing(lmv))
@@ -412,6 +412,18 @@ static int mdt_restripe(struct mdt_thread_info *info,
                GOTO(out_child, rc = -EREMOTE);
        }
 
+       if (!S_ISDIR(lu_object_attr(&child->mot_obj)))
+               GOTO(out_child, rc = -ENOTDIR);
+
+       rc = mdt_stripe_get(info, child, ma, XATTR_NAME_LMV);
+       if (rc)
+               GOTO(out_child, rc);
+
+       /* race with migrate? */
+       if ((ma->ma_valid & MA_LMV) &&
+            lmv_is_migrating(&ma->ma_lmv->lmv_md_v1))
+               GOTO(out_child, rc = -EBUSY);
+
        /* lock object */
        lhc = &info->mti_lh[MDT_LH_CHILD];
        mdt_lock_reg_init(lhc, LCK_EX);
@@ -2265,6 +2277,15 @@ lock_parent:
 
                if (ma->ma_valid & MA_LOV && mdt_lmm_dom_stripesize(ma->ma_lmm))
                        info->mti_spec.sp_migrate_nsonly = 1;
+       } else if (S_ISDIR(lu_object_attr(&sobj->mot_obj))) {
+               rc = mdt_stripe_get(info, sobj, ma, XATTR_NAME_LMV);
+               if (rc)
+                       GOTO(unlock_links, rc);
+
+               /* race with restripe/auto-split? */
+               if ((ma->ma_valid & MA_LMV) &&
+                   lmv_is_restriping(&ma->ma_lmv->lmv_md_v1))
+                       GOTO(unlock_links, rc = -EBUSY);
        }
 
        /* if migration HSM is allowed */