From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 933EFECE587 for ; Tue, 1 Oct 2019 16:45:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5F8382190F for ; Tue, 1 Oct 2019 16:45:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569948331; bh=DdXffDv43Dzcs2A5WSrvHVsPPlFVTzzPNg20It8U2EU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=EcOl64ZXCQYMQa+KmaHQOhcdyjCdv4vB/8Fa89vRtp9yxtXybK+hxw0tb971rZt+t 2NQm3+3ByiMOkaGC0J7rJlOxXJ6yNx6IbinLlpuz0JEbnx0fE/XTaxj26NVtw8+1Xz 9ajWu+5GYSKhWDj2jJGWmIDiTrtb3CyUAttL+QP0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390296AbfJAQpa (ORCPT ); Tue, 1 Oct 2019 12:45:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:57626 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388464AbfJAQpN (ORCPT ); Tue, 1 Oct 2019 12:45:13 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 936122168B; Tue, 1 Oct 2019 16:45:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569948312; bh=DdXffDv43Dzcs2A5WSrvHVsPPlFVTzzPNg20It8U2EU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ce1qvMFXs4tC52ZdzhdroMp+PcxOf0RjnzRMksBJV84fE2eh2xL4vxchXr2FbM7MR CQ67hIeho9FZkHtlNnSToXeiqzxS4Sqx9LrajDcYt9goJD9jRLqquBxK1V9AWljb9f 2/E+Bf1/tGJdkpyaJxeku2oHgN5HPqV+G7fRKLps= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Erqi Chen , "Yan, Zheng" , Jeff Layton , Ilya Dryomov , Sasha Levin , ceph-devel@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 06/19] ceph: reconnect connection if session hang in opening state Date: Tue, 1 Oct 2019 12:44:52 -0400 Message-Id: <20191001164505.16708-6-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191001164505.16708-1-sashal@kernel.org> References: <20191001164505.16708-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Erqi Chen [ Upstream commit 71a228bc8d65900179e37ac309e678f8c523f133 ] If client mds session is evicted in CEPH_MDS_SESSION_OPENING state, mds won't send session msg to client, and delayed_work skip CEPH_MDS_SESSION_OPENING state session, the session hang forever. Allow ceph_con_keepalive to reconnect a session in OPENING to avoid session hang. Also, ensure that we skip sessions in RESTARTING and REJECTED states since those states can't be resurrected by issuing a keepalive. Link: https://tracker.ceph.com/issues/41551 Signed-off-by: Erqi Chen chenerqi@gmail.com Reviewed-by: "Yan, Zheng" Signed-off-by: Jeff Layton Signed-off-by: Ilya Dryomov Signed-off-by: Sasha Levin --- fs/ceph/mds_client.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 67cb9d078bfa7..3139fbd4c34e3 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -3410,7 +3410,9 @@ static void delayed_work(struct work_struct *work) pr_info("mds%d hung\n", s->s_mds); } } - if (s->s_state < CEPH_MDS_SESSION_OPEN) { + if (s->s_state == CEPH_MDS_SESSION_NEW || + s->s_state == CEPH_MDS_SESSION_RESTARTING || + s->s_state == CEPH_MDS_SESSION_REJECTED) { /* this mds is failed or recovering, just wait */ ceph_put_mds_session(s); continue; -- 2.20.1