From: Hongchao Zhang <hongchao.zhang@intel.com>
Date: Sun, 21 Apr 2013 13:12:52 +0000 (+0800)
Subject: LU-3142 mdt: update mdt_max_mdsize in mdt_lvbo_size
X-Git-Tag: 2.3.65~61
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=507dc8765e36e4cad6c808ad6e6ce28b8f4e395c

LU-3142 mdt: update mdt_max_mdsize in mdt_lvbo_size

during calling mdt_lvbo_size to get the size of lsm, mdt_max_mdsize
could be less than the lsm size of this object in failover mode.
then it is needed to check and update this value.

Test-Parameters: envdefinitions=RECOVERY_MDS_SCALE_EXCEPT=failover_ost \
clientdistro=el6 serverdistro=el6 clientarch=x86_64 serverarch=x86_64 \
clientcount=4 osscount=2 mdscount=2 austeroptions=-R failover=true \
useiscsi=true testlist=recovery-mds-scale

Change-Id: Id490c346ca9f34edcc963334e396678f1b41562c
Signed-off-by: Hongchao Zhang <hongchao.zhang@intel.com>
Signed-off-by: Jian Yu <jian.yu@intel.com>
Reviewed-on: http://review.whamcloud.com/6102
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Mike Pershin <mike.pershin@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
---

diff --git a/lustre/mdt/mdt_handler.c b/lustre/mdt/mdt_handler.c
index f42fda5..53545e0 100644
--- a/lustre/mdt/mdt_handler.c
+++ b/lustre/mdt/mdt_handler.c
@@ -3720,6 +3720,9 @@ static int mdt_intent_layout(enum mdt_it_code opcode,
 			     __u64 flags)
 {
 	struct layout_intent *layout;
+	struct lu_fid *fid;
+	struct mdt_object *obj = NULL;
+	struct md_object *child = NULL;
 	int rc;
 	ENTRY;
 
@@ -3729,6 +3732,26 @@ static int mdt_intent_layout(enum mdt_it_code opcode,
 		RETURN(-EINVAL);
 	}
 
+	fid = &info->mti_tmp_fid2;
+	fid_build_from_res_name(fid, &(*lockp)->l_resource->lr_name);
+
+	obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
+	if (IS_ERR(obj))
+		RETURN(PTR_ERR(obj));
+
+	if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
+		child = mdt_object_child(obj);
+
+		/* get the length of lsm */
+		rc = mo_xattr_get(info->mti_env, child, &LU_BUF_NULL,
+				  XATTR_NAME_LOV);
+
+		if (rc > info->mti_mdt->mdt_max_mdsize)
+			info->mti_mdt->mdt_max_mdsize = rc;
+	}
+
+	mdt_object_put(info->mti_env, obj);
+
 	(*lockp)->l_lvb_type = LVB_T_LAYOUT;
 	req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
 			ldlm_lvbo_size(*lockp));