From nobody Thu Jan 09 00:39:36 2025 X-Original-To: freebsd-fs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YT5XY1cNFz5kKV6 for ; Thu, 09 Jan 2025 00:39:57 +0000 (UTC) (envelope-from rick.macklem@gmail.com) Received: from mail-ed1-x52a.google.com (mail-ed1-x52a.google.com [IPv6:2a00:1450:4864:20::52a]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YT5XW4Z20z4wf6 for ; Thu, 9 Jan 2025 00:39:55 +0000 (UTC) (envelope-from rick.macklem@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20230601 header.b="c+R/lOL/"; spf=pass (mx1.freebsd.org: domain of rick.macklem@gmail.com designates 2a00:1450:4864:20::52a as permitted sender) smtp.mailfrom=rick.macklem@gmail.com; dmarc=pass (policy=none) header.from=gmail.com Received: by mail-ed1-x52a.google.com with SMTP id 4fb4d7f45d1cf-5d982de9547so522711a12.2 for ; Wed, 08 Jan 2025 16:39:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736383193; x=1736987993; darn=freebsd.org; h=cc:to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=yAJAVCTkzRDRzN7Gm0MZmL1pkpuctqpePuPNUUzqvaA=; b=c+R/lOL/JwvrUJP7/N/HJjEGXLCub1qIdBaJXlyd7ykBtZ1cvIkJaH1am5sxcjZOR1 xap10yV9Van8mihrbJcjn6KVyca5Zqbi4vbRv+X2zoEfLYOOkMhCrGMl90fp7sAINM5O N7BwBhOu4JiFYB9cifSU009dtrhwpdn7w2USBhhNVO5qtU96G6XTtLv5vXA+J04bmHCR ZDHvD0BrtiUl3+5B2+9P2V52F/Iup8cVhjHQ/vTUc4K6ia3JSHFULei8V0esAo77XOki s2KbbH3xNS0xTdEMtqekco4pX5EtH87EFTRsAaotGl9puG+y0YsU6DmlnDjeH3/+9Lgw Rmyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736383193; x=1736987993; h=cc:to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=yAJAVCTkzRDRzN7Gm0MZmL1pkpuctqpePuPNUUzqvaA=; b=gEHPKm+tKrgBdzG6GmPFoRPAHcziag1rh1FHNRa9dRgCCRRuZAYOrOxS64681SYd8T 4gn8gV6LI+cu8vCxKoHPaqRMPWcAabTOGQcTTFxeUYVlyER+9HLjcSMMtyTgxvceBS1F CuBHaA7rqWiLkRJWUgAstEwcbSgMdwlEvPNwnpeQpuTN54ZXnoJ0xIvuG6V41XG7ksIa INoIxJ9OPJbtWUDp3a3WViDlnZ7xcnORMn4H2MQ2GWXlJDXbDOBqdOfFXGP5DUK8bWRf QfKa8/Z9R2dyiJqxDgwNC4QFa+3S5twwNDVfCqDSXRST3KuFlsJ/4u+2+bIRHM0Tud7h mOYA== X-Gm-Message-State: AOJu0YzeVtv6UR48kJrQtuBaFgNeAbdnczk+MYJaWW5t9g6ly109XK/g /t3i0O81KDpX7M4I9stKlrqX2oteLxPinZxQczIQK1uSkoAwR1lenIeYV0MjGwcDNvve8TaE/2E xpRcEorlE3qsmhbneFEsrp5UiRm4+ X-Gm-Gg: ASbGnctHHAPEnZz0bDyb8b/WDxwPI4HWsIrI6+p75myEBl4TdkT1MfY4eGJpBiEwz+c HHqIiVzikbWf+IrmqdzlwevTs9pVk5vEBHmBBNQNpeAwc8/IJzVOtGaswj+MK8knc8UQAat8= X-Google-Smtp-Source: AGHT+IGxx4ronAPB+SfPHxZKCHcyH6l4tp77Zaa5OMzVPQrHaPJOdy2U69tC2tXUL7+q+vW4GqR99b9cKTs5bumUMzA= X-Received: by 2002:a05:6402:400e:b0:5d2:729f:995b with SMTP id 4fb4d7f45d1cf-5d972e479cdmr4311510a12.24.1736383192720; Wed, 08 Jan 2025 16:39:52 -0800 (PST) List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@FreeBSD.org MIME-Version: 1.0 From: Rick Macklem Date: Wed, 8 Jan 2025 16:39:36 -0800 X-Gm-Features: AbW1kva5isrXh5m_lG_YpJjjZN98t8d0UL3nCTfQO5Kc8CahPxlk1a_6OFTDnh8 Message-ID: Subject: RFC: Marking file system va_filerev style To: Freebsd fs Cc: richard@kojedz.in Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 4YT5XW4Z20z4wf6 X-Spamd-Bar: --- X-Spamd-Result: default: False [-4.00 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.999]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; TAGGED_FROM(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; FROM_HAS_DN(0.00)[]; MISSING_XM_UA(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; MID_RHS_MATCH_FROMTLD(0.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; MLMMJ_DEST(0.00)[freebsd-fs@freebsd.org]; RCVD_COUNT_ONE(0.00)[1]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::52a:from] Hi, Back in Sept. Richard reported a problem with a FreeBSD server serving NFSv4 to Linux clients, where the file attributes would get messed up sometimes. (I can't recall if he posted me or a mailing list.) Anyhow, He tried a patch I gave him that told the Linux client that the Change attribute (va_filerev) increments for each change. --> This appears to have fixed the problem. However, this patch should really report what the exported fs does w.r.t. va_filerev and not just guess that it increments it. So, the question is, how do I have file systems report how they generate va_filerev? My current thought is a new MNTK_xxx flag set by the filesystem in its mount point to indicate it increments it upon each change (which is what UFS and ZFS currently does, I think?) Does this sound reasonable? Thanks for any comments, rick