From patchwork Mon Jun 28 07:55:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Venky Shankar X-Patchwork-Id: 468034 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=-14.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, 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 E0837C2B9F4 for ; Mon, 28 Jun 2021 07:55:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BA337611AE for ; Mon, 28 Jun 2021 07:55:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232156AbhF1H6X (ORCPT ); Mon, 28 Jun 2021 03:58:23 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:48344 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231725AbhF1H6V (ORCPT ); Mon, 28 Jun 2021 03:58:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1624866955; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=m1+/A2py54pf+pIJbOSXnemtLQV2ZdAqfhK4Sfigjrc=; b=Oj0SogMe/8ylQwUJfeGs8WZPo5QSmeWmVeFtj4Ab7b4gzDWePFaCl7lc8Ndki6hLQuyoQ7 0dacaNfhj0nw+HSEgDfY+/rZL6Nu44Mw3PqD5SyYRxVR3DrtWZGrLQml9bvBSlVIGcw1nO hPRdS/wRrUKxIhT5gS1s2VsMqtvJUyM= Received: from mail-pf1-f198.google.com (mail-pf1-f198.google.com [209.85.210.198]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-46-GbmnbxFeNTSCrsO_JOcIOQ-1; Mon, 28 Jun 2021 03:55:54 -0400 X-MC-Unique: GbmnbxFeNTSCrsO_JOcIOQ-1 Received: by mail-pf1-f198.google.com with SMTP id z197-20020a627ece0000b02903088fd1d830so5466446pfc.7 for ; Mon, 28 Jun 2021 00:55:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=m1+/A2py54pf+pIJbOSXnemtLQV2ZdAqfhK4Sfigjrc=; b=j57aKXPh0iazhnsp4TYhSGBTNzA+5jEm6NH5mqKTmKNVsa+oaYyLj9lYNf0vojC853 xrypE+n43Jn38G19CrcpJ2V53hNspmK32FwsUXGPxkH4/M7oXhGJsnTRMRU/v2TN51l8 yLz7E8iZ9UcahHvEXr8Lo/F6hp/3PkiyUY8uNGzpGYQyuDjDZGEaywfmR4LXpgliTcjB KUtS8DNYwR2iFp5ll3lPRU7i/cpcnc9pIDs3+8wuNd2EvU9gAwV4AltWupNTPG1+5oC+ tocbvqjnmSk48Gd+tdXKvdIFA+LUdi902ALIzzPOvTL+ml3yKtQA+7QP+F5+C7DY+oee gmfQ== X-Gm-Message-State: AOAM530l/rAFSgucBwwd0uZ33+zthogRnXYei9PV1sX/AlYFMl7TWQgf ZrLPZitg33wluTipgFmclZquAH3gDeWZSlHMJI5ZL+XmTjrEOEkd/e8vfdjE9RXKfATdUGs5Hpc PuN21GESekGtgkD9ftkzBKw== X-Received: by 2002:a05:6a00:138f:b029:304:2af5:1e12 with SMTP id t15-20020a056a00138fb02903042af51e12mr23925032pfg.5.1624866953070; Mon, 28 Jun 2021 00:55:53 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxDyBssh3+iLRG6BU3nIWkQcPxseM/OPT9Ir4RkaSTZARifqDR9rA1/Qj/79TiKxrH14EFaAA== X-Received: by 2002:a05:6a00:138f:b029:304:2af5:1e12 with SMTP id t15-20020a056a00138fb02903042af51e12mr23925012pfg.5.1624866952830; Mon, 28 Jun 2021 00:55:52 -0700 (PDT) Received: from localhost.localdomain ([49.207.209.6]) by smtp.gmail.com with ESMTPSA id g123sm8304959pfb.187.2021.06.28.00.55.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Jun 2021 00:55:52 -0700 (PDT) From: Venky Shankar To: jlayton@redhat.com, idryomov@gmail.com Cc: ceph-devel@vger.kernel.org, Venky Shankar Subject: [PATCH 0/4] ceph: new mount device syntax Date: Mon, 28 Jun 2021 13:25:41 +0530 Message-Id: <20210628075545.702106-1-vshankar@redhat.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org This series introduces changes Ceph File System mount device string. Old mount device syntax (source) has the following problems: mounts to the same cluster but with different fsnames and/or creds have identical device string which can confuse xfstests. Userspace mount helper tool resolves monitor addresses and fill in mon addrs automatically, but that means the device shown in /proc/mounts is different than what was used for mounting. New device syntax is as follows: cephuser@fsid.mycephfs2=/path Note, there is no "monitor address" in the device string. That gets passed in as mount option. This keeps the device string same when monitor addresses change (on remounts). Also note that the userspace mount helper tool is backward compatible. I.e., the mount helper will fallback to using old syntax after trying to mount with the new syntax. Venky Shankar (4): ceph: new device mount syntax ceph: validate cluster FSID for new device syntax ceph: record updated mon_addr on remount doc: document new CephFS mount device syntax Documentation/filesystems/ceph.rst | 23 ++++- fs/ceph/super.c | 132 ++++++++++++++++++++++++++--- fs/ceph/super.h | 4 + include/linux/ceph/libceph.h | 1 + net/ceph/ceph_common.c | 3 +- 5 files changed, 149 insertions(+), 14 deletions(-)