From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Simmons Date: Thu, 27 Feb 2020 16:12:25 -0500 Subject: [lustre-devel] [PATCH 277/622] lustre: ptlrpc: ASSERTION (req_transno < next_transno) failed In-Reply-To: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> References: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> Message-ID: <1582838290-17243-278-git-send-email-jsimmons@infradead.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lustre-devel@lists.lustre.org From: Andriy Skulysh An update request is checked for duplicates by xid in is_req_replayed_by_update(). However xid is unique per client only. It may happen that there are 2 requests with the same xid from different clients. Perform lookup by transno, it is unique per MDT. Cray-bug-id: LUS-6015 WC-bug-id: https://jira.whamcloud.com/browse/LU-11251 Lustre-commit: 53764826b95f ("LU-11251 mdt: ASSERTION (req_transno < next_transno) failed") Signed-off-by: Andriy Skulysh Reviewed-by: Vitaly Fertman Reviewed-by: Alexander Boyko Reviewed-on: https://review.whamcloud.com/33001 Reviewed-by: Alexandr Boyko Reviewed-by: Oleg Drokin Signed-off-by: James Simmons --- fs/lustre/include/obd_support.h | 3 ++- fs/lustre/ptlrpc/client.c | 11 ++++++++--- 2 files changed, 10 insertions(+), 4 deletions(-) diff --git a/fs/lustre/include/obd_support.h b/fs/lustre/include/obd_support.h index 4e956da..837b68d 100644 --- a/fs/lustre/include/obd_support.h +++ b/fs/lustre/include/obd_support.h @@ -355,7 +355,8 @@ #define OBD_FAIL_PTLRPC_DROP_BULK 0x51a #define OBD_FAIL_PTLRPC_LONG_REQ_UNLINK 0x51b #define OBD_FAIL_PTLRPC_LONG_BOTH_UNLINK 0x51c -#define OBD_FAIL_PTLRPC_BULK_ATTACH 0x521 +#define OBD_FAIL_PTLRPC_BULK_ATTACH 0x521 +#define OBD_FAIL_PTLRPC_ROUND_XID 0x530 #define OBD_FAIL_PTLRPC_CONNECT_RACE 0x531 #define OBD_FAIL_OBD_PING_NET 0x600 diff --git a/fs/lustre/ptlrpc/client.c b/fs/lustre/ptlrpc/client.c index 7c243af..ac16878 100644 --- a/fs/lustre/ptlrpc/client.c +++ b/fs/lustre/ptlrpc/client.c @@ -712,6 +712,8 @@ static inline void ptlrpc_assign_next_xid(struct ptlrpc_request *req) spin_unlock(&req->rq_import->imp_lock); } +static atomic64_t ptlrpc_last_xid; + int ptlrpc_request_bufs_pack(struct ptlrpc_request *request, u32 version, int opcode, char **bufs, struct ptlrpc_cli_ctx *ctx) @@ -761,7 +763,6 @@ int ptlrpc_request_bufs_pack(struct ptlrpc_request *request, ptlrpc_at_set_req_timeout(request); lustre_msg_set_opc(request->rq_reqmsg, opcode); - ptlrpc_assign_next_xid(request); /* Let's setup deadline for req/reply/bulk unlink for opcode. */ if (cfs_fail_val == opcode) { @@ -776,6 +777,11 @@ int ptlrpc_request_bufs_pack(struct ptlrpc_request *request, } else if (CFS_FAIL_CHECK(OBD_FAIL_PTLRPC_LONG_BOTH_UNLINK)) { fail_t = &request->rq_reply_deadline; fail2_t = &request->rq_bulk_deadline; + } else if (CFS_FAIL_CHECK(OBD_FAIL_PTLRPC_ROUND_XID)) { + time64_t now = ktime_get_real_seconds(); + + atomic64_set(&ptlrpc_last_xid, + ((u64)now >> 4) << 24); } if (fail_t) { @@ -791,6 +797,7 @@ int ptlrpc_request_bufs_pack(struct ptlrpc_request *request, msleep(4 * MSEC_PER_SEC); } } + ptlrpc_assign_next_xid(request); return 0; @@ -3085,8 +3092,6 @@ void ptlrpc_abort_set(struct ptlrpc_request_set *set) } } -static atomic64_t ptlrpc_last_xid; - /** * Initialize the XID for the node. This is common among all requests on * this node, and only requires the property that it is monotonically -- 1.8.3.1