[RFC PATCH 4/6] export: Record mounted volumes

From: Richard Weinberger <richard@nod.at>
To: linux-nfs@vger.kernel.org
Cc: david@sigma-star.at, bfields@fieldses.org,
	luis.turcitu@appsbroker.com, david.young@appsbroker.com,
	david.oberhollenzer@sigma-star.at,
	trond.myklebust@hammerspace.com, anna.schumaker@netapp.com,
	chris.chilvers@appsbroker.com,
	Richard Weinberger <richard@nod.at>
Subject: [RFC PATCH 4/6] export: Record mounted volumes
Date: Thu, 17 Feb 2022 14:15:29 +0100	[thread overview]
Message-ID: <20220217131531.2890-5-richard@nod.at> (raw)
In-Reply-To: <20220217131531.2890-1-richard@nod.at>

As soon a client mounts a volume, record it in the database
to be able to uncover NFS subvolumes after a reboot.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 support/export/cache.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/support/export/cache.c b/support/export/cache.c
index 6039745e..b5763b1d 100644
--- a/support/export/cache.c
+++ b/support/export/cache.c
@@ -967,8 +967,10 @@ static void nfsd_fh(int f)
 	 * line.
 	 */
 	qword_addint(&bp, &blen, 0x7fffffff);
-	if (found)
+	if (found) {
+		reexpdb_add_subvolume(found_path);
 		qword_add(&bp, &blen, found_path);
+	}
 	qword_addeol(&bp, &blen);
 	if (blen <= 0 || cache_write(f, buf, bp - buf) != bp - buf)
 		xlog(L_ERROR, "nfsd_fh: error writing reply");
-- 
2.31.1

