From: Alex Zhuravlev <bzzz@whamcloud.com>
Date: Sat, 21 Aug 2021 15:45:53 +0000 (+0300)
Subject: LU-8704 osp: update local fldb cache
X-Git-Tag: 2.15.56~118
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F20%2F44720%2F30;p=fs%2Flustre-release.git

LU-8704 osp: update local fldb cache

update local fldb cache during precreate. this is to avoid
a situation when LOD is generating LOVEA and has to lookup
in FLDB. in turn this may lead to an RPC with a local
transaction running. not good.

Signed-off-by: Alex Zhuravlev <bzzz@whamcloud.com>
Change-Id: Iadf89eddcef88750d234b0139b67e04715e68855
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/44720
Reviewed-by: Sergey Cheremencev <scherementsev@ddn.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
---

diff --git a/lustre/osp/osp_precreate.c b/lustre/osp/osp_precreate.c
index 2c04b5e..44129f0 100644
--- a/lustre/osp/osp_precreate.c
+++ b/lustre/osp/osp_precreate.c
@@ -447,6 +447,23 @@ out:
 	RETURN(rc);
 }
 
+static void osp_update_fldb_cache(const struct lu_env *env,
+				  struct osp_device *osp,
+				  struct lu_fid *fid)
+{
+	struct lu_seq_range range = { 0 };
+	struct lu_server_fld *server_fld;
+	struct lu_site *site;
+
+	site = osp->opd_storage->dd_lu_dev.ld_site;
+	server_fld = lu_site2seq(site)->ss_server_fld;
+	if (!server_fld)
+		return;
+
+	fld_range_set_type(&range, LU_SEQ_RANGE_ANY);
+	fld_server_lookup(env, server_fld, fid_seq(fid), &range);
+}
+
 /**
  * Switch to another sequence
  *
@@ -506,6 +523,9 @@ static int osp_precreate_rollover_new_seq(struct lu_env *env,
 	osp->opd_pre_last_created_fid = *fid;
 	spin_unlock(&osp->opd_pre_lock);
 
+	if (!rc)
+		osp_update_fldb_cache(env, osp, fid);
+
 	RETURN(rc);
 }
 
@@ -712,6 +732,10 @@ out_req:
 	osp_pre_update_status(d, rc);
 
 	ptlrpc_req_finished(req);
+
+	if (!rc)
+		osp_update_fldb_cache(env, d, fid);
+
 	RETURN(rc);
 }