From patchwork Thu Jun 1 19:46:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Mayhew X-Patchwork-Id: 13264409 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF810C77B7E for ; Thu, 1 Jun 2023 19:47:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229651AbjFATrD (ORCPT ); Thu, 1 Jun 2023 15:47:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36172 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231178AbjFATrB (ORCPT ); Thu, 1 Jun 2023 15:47:01 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E59A1189 for ; Thu, 1 Jun 2023 12:46:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1685648779; 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: in-reply-to:in-reply-to:references:references; bh=ZqkHy8ZAPKlr+SHQRkpklX7yxS0TC5cn4LTH+deSobE=; b=KbeJHp6jgWXYQkEIsSRHBufPvfSfAiYHtkaVU/bINBITUssxklTR5SRjzJPEoJ/qNzJ4RJ aj/Qpay2u81GTU7lHcKneY2u3Xm26KX+nFpAElFaNU4ApEdilyagPHyVeeLW9fcmd8Oq9Y B6LXoG/b7pKGSoCKfjDWRmzdgdFrgWs= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-66-CpWQFkeIOp2-SXEIRkgfTg-1; Thu, 01 Jun 2023 15:46:17 -0400 X-MC-Unique: CpWQFkeIOp2-SXEIRkgfTg-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7FD12101A52C for ; Thu, 1 Jun 2023 19:46:17 +0000 (UTC) Received: from aion.usersys.redhat.com (unknown [10.22.32.208]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 73DBC9E60; Thu, 1 Jun 2023 19:46:17 +0000 (UTC) Received: by aion.usersys.redhat.com (Postfix, from userid 1000) id 1E86E1A27F7; Thu, 1 Jun 2023 15:46:17 -0400 (EDT) From: Scott Mayhew To: steved@redhat.com Cc: linux-nfs@vger.kernel.org Subject: [nfs-utils PATCH 2/3] nfs(5): Document the write=lazy|eager|wait mount option. Date: Thu, 1 Jun 2023 15:46:16 -0400 Message-Id: <20230601194617.2174639-3-smayhew@redhat.com> In-Reply-To: <20230601194617.2174639-1-smayhew@redhat.com> References: <20230601194617.2174639-1-smayhew@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Signed-off-by: Scott Mayhew --- utils/mount/nfs.man | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/utils/mount/nfs.man b/utils/mount/nfs.man index 3cef2e23..2ed898f8 100644 --- a/utils/mount/nfs.man +++ b/utils/mount/nfs.man @@ -614,6 +614,28 @@ option is not specified, the default behavior depends on the kernel, but is usually equivalent to .BR "xprtsec=none" . +.TP 1.5i +.BI write= behavior +Controls how the NFS client handles the +.BR write (2) +system call. +.I behavior +can be one of +.BR lazy , +.BR eager , +or +.BR wait . +If +.B lazy +(the default) is specified, then the NFS client delays sending application +writes to the NFS server as described in the DATA AND METADATA COHERENCE +section. If +.B eager +is specified, then the NFS client sends off the write immediately as an +unstable WRITE to the NFS server. If +.B wait +is specified, then the NFS client sends off the write immediately as an +unstable WRITE to the NFS server and then waits for the reply. .SS "Options for NFS versions 2 and 3 only" Use these options, along with the options in the above subsection, for NFS versions 2 and 3 only.