From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0D7DB15D5B8 for ; Thu, 26 Dec 2024 22:08:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735250918; cv=none; b=FU1YLjfjCJf9yrhcUy7Olm0xUhRvIizJfi7/Y/mHMkz3jcP9e4d1+hEHM2uX4rTusVrkm1wcUEnJ8XWVVFijRAD3ysdKIn8YCEeqHSxL8T2dEAYh1+FG2cEsfkEXYSygYQFej/PLSi5GzvPToDixoZDshZrkkC1iJFsW7O9lvP0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735250918; c=relaxed/simple; bh=6dVncqLBayPUXV3MYP/J3VkAApa74AQmdamT+AofnXY=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=rpTD6jhrNs8udjnwk1u1jmPF6KKTeJtKYq3Lz4xktk5n3jyMENf/bwn1LgNJnrba/Pd8QWfZSYyssSi8rJe3UgfQZL22p0IjnVOAWxT5qTf8mv4BElL/zOWaQqKKnFlugLLelwv3yWcTvuz6gRqHrzknb+19xug0ADqchfxZu3Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bfle4njl; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="bfle4njl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 24D0AC4CED1; Thu, 26 Dec 2024 22:08:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1735250917; bh=6dVncqLBayPUXV3MYP/J3VkAApa74AQmdamT+AofnXY=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=bfle4njlmQFGeBP85U7UZjV8N4VDDvKWkfQ0zhj4QqxJ2VM3lOHcfYwYpzLeFKCHx Vh9+T3nueL8AhOiHpCgW+1Oq8KmNLqZz3LdbPmxWsSUJUbECaLEPnKRdxMXwRFZWY4 W52qzblBpEOYKwtJi3kDnll/bWVdren/DpBZxq9c3iQqDC8ITAQbc1u1PVlMReYzqh JfCrMdIzyQnLOUsFfZG56af/f5io7HZwr8RZn9QtFyCRGX3TS0NelUqS1l8osIAanQ ywwHidzC7n/uYNbP1/c5VACBfZ/6CVbf4IsXiBAMjatzpJAXc+9HEYSB29KXfqAstA EbRpky8FNysNg== Message-ID: Subject: Re: NFS4 Delegations: Unexpected behavior of readdir + child delegations From: Jeff Layton To: Roi Azarzar , linux-nfs@vger.kernel.org Cc: Sagi Grimberg Date: Thu, 26 Dec 2024 17:08:35 -0500 In-Reply-To: References: Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 0OX6MYPtv76hka8lW4mnRmZqqx3UtfHX/hF/zH24Gj7A6sYKYLCU3YrI2Ogiu7/ksKcl7goQjpvtV YrOOI5VGLHge0awt7bhMCTM9KAfPc+xL/ZxAMVWd3NCk5SamL2cE99UWgtvNOIYU8m6EjTLhsj8sn VluJH0/RcxEeFbnSaswVChNSGa7mXJrTR22lRL6ZPjdMgS2Km90haWPRc8Wolcz07Y2se0xpGVLEQ 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CHqumUHRry+RF0lH00clzX/W8OrQJZtoBPXv9ahka/Vp7kEulcBJr1cH5Wz/WprhsIM7U9pse1f1g Yy9YbXtWctUz8uvDR7shsQxAhX3qO7DilMtuGo1v97I/Kx4gXQ52syh/w6EBny71CZrOgD6kJwPVV AaM1LRC28muq91WCFhs/nzHozpbzcheyGtMUI2Ao4K6mnY+3zIuXPygZMFr9KXE6fF7HzKxKuZMJO aEZCiDOq0anx6FmOzs5E6Jqdpo/mtI8beK+BE7Va6ni7YrQlnT0i3vaTVMTiCThbqsB20VrbMjlhp f8lfK1XVNbRq/R7GZ9zHESlsa35ha60yd/j3pu5hT2xyy8krV8vGhHvnJ1XRMJBAB/UYb6FyC7S+m QZIQXVeAA+smfTT0tDrisj1U5x6ZB9b3nBg65kc= Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.2 (3.54.2-1.fc41) Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2024-12-26 at 08:56 +0200, Roi Azarzar wrote: > Hi, >=20 > I Tested the following against linux server: > 1. client 1: > >=20 > > > > > open1 =3D os.open("/mnt/roi_test/var/nfs/export_top/test_for_read= dir_deleg/file1.txt",os.O_RDWR) > >=20 > > > > > open2 =3D os.open("/mnt/roi_test/var/nfs/export_top/test_for_read= dir_deleg/file2.txt",os.O_RDWR) > >=20 > > > > > open3 =3D os.open("/mnt/roi_test/var/nfs/export_top/test_for_read= dir_deleg/file3.txt",os.O_RDWR) >=20 >=20 > 2. client 2: > [centos@rnd-nfs-c01 ~]$ stat > /mnt/roi_test/var/nfs/export_top/test_for_readdir_deleg/ File: > '/mnt/roi_test/var/nfs/export_top/test_for_readdir_deleg/' Size: 57 > Blocks: 0 IO Block: 1048576 directory Device: 2fh/47d Inode: 33564533 > Links: 2 Access: (0777/drwxrwxrwx) Uid: ( 1000/ centos) Gid: ( 1000/ > centos) Access: 2024-12-25 21:51:41.103296943 +0200 Modify: 2024-12-25 > 21:51:40.160278216 +0200 Change: 2024-12-25 21:52:05.733786050 +0200 > Birth: - [centos@rnd-nfs-c01 ~]$ ls -ltr > /mnt/roi_test/var/nfs/export_top/test_for_readdir_deleg/ total 0 > -rwxrwxrwx 1 centos centos 0 Dec 25 21:51 file2.txt -rwxrwxrwx 1 > centos centos 0 Dec 25 21:51 file1.txt > -rwxrwxrwx 1 centos centos 0 Dec 25 22:06 file3.txt >=20 > I noticed in the pcap that the server doesn't wait for all CB_GETATTR > responses for all childs before responding on READDIR, and for some > reason also sends CB_RECALL. >=20 >=20 > Any reason why to do so? >=20 > Linux version: > Linux protocol-linux-server 6.10.3-custom #1 SMP PREEMPT_DYNAMIC Mon > Aug 12 12:42:22 IDT 2024 x86_64 x86_64 x86_64 GNU/Linux There are some known bugs in the server's CB_GETATTR implementation that were fixed recently (bf92e5008b17f9, in particular). Are you able to test a v6.13-rc client? Does it show similar behavior? Thanks, --=20 Jeff Layton