[lustre-devel] [PATCH 17/18] lustre: pcc: introducing OBD_CONNECT2_PCCRO flag

From: James Simmons <jsimmons@infradead.org>
To: Andreas Dilger <adilger@whamcloud.com>,
	Oleg Drokin <green@whamcloud.com>, NeilBrown <neilb@suse.de>
Cc: Lustre Development List <lustre-devel@lists.lustre.org>
Subject: [lustre-devel] [PATCH 17/18] lustre: pcc: introducing OBD_CONNECT2_PCCRO flag
Date: Mon, 19 Jul 2021 08:32:12 -0400	[thread overview]
Message-ID: <1626697933-6971-18-git-send-email-jsimmons@infradead.org> (raw)
In-Reply-To: <1626697933-6971-1-git-send-email-jsimmons@infradead.org>

From: Qian Yingjin <qian@ddn.com>

Add a new connection flag OBD_CONNECT2_PCCRO to solve the access
consistency from the old client without PCC-RO support.

By necessity, also include definitions for OBD_CONNECT2_MODE_CONVERT
and OBD_CONNECT2_BATCH_RPC so obd_connect_names[] works.

WC-bug-id: https://jira.whamcloud.com/browse/LU-10499
Lustre-commit: 6007dc9382df726 ("LU-10499 pcc: introducing OBD_CONNECT2_PCCRO flag")
Signed-off-by: Qian Yingjin <qian@ddn.com>
Reviewed-on: https://review.whamcloud.com/40791
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Wang Shilong <wshilong@whamcloud.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
 fs/lustre/ptlrpc/wiretest.c            | 6 ++++++
 include/uapi/linux/lustre/lustre_idl.h | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/fs/lustre/ptlrpc/wiretest.c b/fs/lustre/ptlrpc/wiretest.c
index c7eb218..cd1456c 100644
--- a/fs/lustre/ptlrpc/wiretest.c
+++ b/fs/lustre/ptlrpc/wiretest.c
@@ -1252,6 +1252,12 @@ void lustre_assert_wire_constants(void)
 		 OBD_CONNECT2_DOM_LVB);
 	LASSERTF(OBD_CONNECT2_REP_MBITS == 0x100000ULL, "found 0x%.16llxULL\n",
 		 OBD_CONNECT2_REP_MBITS);
+	LASSERTF(OBD_CONNECT2_MODE_CONVERT == 0x200000ULL, "found 0x%.16llxULL\n",
+		 OBD_CONNECT2_MODE_CONVERT);
+	LASSERTF(OBD_CONNECT2_BATCH_RPC == 0x400000ULL, "found 0x%.16llxULL\n",
+		 OBD_CONNECT2_BATCH_RPC);
+	LASSERTF(OBD_CONNECT2_PCCRO == 0x800000ULL, "found 0x%.16llxULL\n",
+		 OBD_CONNECT2_PCCRO);
 	LASSERTF(OBD_CONNECT2_ATOMIC_OPEN_LOCK == 0x4000000ULL, "found 0x%.16llxULL\n",
 		 OBD_CONNECT2_ATOMIC_OPEN_LOCK);
 	LASSERTF(OBD_CKSUM_CRC32 == 0x00000001UL, "found 0x%.8xUL\n",
diff --git a/include/uapi/linux/lustre/lustre_idl.h b/include/uapi/linux/lustre/lustre_idl.h
index 8f49adb..2047b92 100644
--- a/include/uapi/linux/lustre/lustre_idl.h
+++ b/include/uapi/linux/lustre/lustre_idl.h
@@ -840,6 +840,10 @@ struct ptlrpc_body_v2 {
 #define OBD_CONNECT2_LSEEK	      0x40000ULL /* SEEK_HOLE/DATA RPC */
 #define OBD_CONNECT2_DOM_LVB	      0x80000ULL /* pack DOM glimpse data in LVB */
 #define OBD_CONNECT2_REP_MBITS	     0x100000ULL /* match reply by mbits, not xid */
+#define OBD_CONNECT2_REP_MBITS       0x100000ULL /* match reply mbits not xid*/
+#define OBD_CONNECT2_MODE_CONVERT    0x200000ULL /* LDLM mode convert */
+#define OBD_CONNECT2_BATCH_RPC	     0x400000ULL /* Multi-RPC batch request */
+#define OBD_CONNECT2_PCCRO	     0x800000ULL /* Read-only PCC */
 #define OBD_CONNECT2_ATOMIC_OPEN_LOCK 0x4000000ULL/* request lock on 1st open */
 /* XXX README XXX:
  * Please DO NOT add flag values here before first ensuring that this same
-- 
1.8.3.1

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