From owner-freebsd-fs@freebsd.org Fri Feb 28 16:43:03 2020 Return-Path: Delivered-To: freebsd-fs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 9E259266EB5 for ; Fri, 28 Feb 2020 16:43:03 +0000 (UTC) (envelope-from luoqi.chen@gmail.com) Received: from mail-ot1-x344.google.com (mail-ot1-x344.google.com [IPv6:2607:f8b0:4864:20::344]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 48Tb1y2B19z4Jlq for ; Fri, 28 Feb 2020 16:43:02 +0000 (UTC) (envelope-from luoqi.chen@gmail.com) Received: by mail-ot1-x344.google.com with SMTP id r16so3180899otd.2 for ; Fri, 28 Feb 2020 08:43:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=E7XVqW8E3Ia5039Hy/nF6/v3hyHoBuseDNsgFyuNrzs=; b=BPxsXROlaGe1KUFrokbEIxPUNDP7IH5am63D+mtIDxtC/XJ2gCYT/Ers8PEfgLIpCC 0+WV/R1SctfX+UdIjZ8xdZItrN5h274QcPVyWCYWEu1ln4ByBQcOByWvu4R/0Ta3s1hp eyVgFzBkXOZPR395zN3y9xXKHgHPYYWxzbZpHP0o2M1BmlKDKtx3RZgtsl0T0CmgI8h7 fvjKiSEj2pKzKjIdSNMFWxauBV+iJhdnvX9/C2Bl+KY/xWVUE7UmwQjZthKMUZBCwKDP rtwH7dzC0zb27S6EvSo+J7KH+eJKtTae0/5fdSalxgiawBNlhdqbd/LLUQfbItXCiPH+ f+Iw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=E7XVqW8E3Ia5039Hy/nF6/v3hyHoBuseDNsgFyuNrzs=; b=DFsMczxq4lSk4WPKC2/dqmHFPmGdIgTPIjk5MQW5/qQnL3wOBNAh3aD8wlclyt3psp CvDG+H5QzbdjZPi3g8gmsZDicDf5kDG6h3ggAuMboKYB37WfOS+MhhxHeAc0LrjvmCh6 cVJOjWwh5WErI8BDexTZukhC0HF3YA0PVWmRdhpJP6s/kN+ruQzbe6U/dNbUpivw/9Tu RhWkxuZhE7+T+QQB35r3guIsvgUDHM0g7r1dvU8/jmd3YUjiDkik/RIOjdcim2KWebkl 7u2E2ujofset3k+y4u8gInAlcpxy8dDDuutgnnds5fVof9FxUq1IyFTLPRnWzRdwIIPY dbng== X-Gm-Message-State: APjAAAXFWdU26VlV4YoXAiyIA8ZezuE7Ux7UmRyjS2Ir1x9xO4tjwV3n VTXcSKfjORKVWTQwvn1TPd946FIB+fIWc1KgIMs= X-Google-Smtp-Source: APXvYqwXU2eIEOG2g1SM+C6Lj6f2Oh2m2mAtiEoW8IpFciXFOElaLX6I+rUV5yLmeH1IV4gi/hRstFPJxWZh4IZY+xM= X-Received: by 2002:a9d:5e82:: with SMTP id f2mr3968240otl.240.1582908181376; Fri, 28 Feb 2020 08:43:01 -0800 (PST) MIME-Version: 1.0 References: <707243CD-C67E-4DAD-AC5A-68EC11CFFDFD@lysator.liu.se> <6EC06026-DA28-4CAC-8D56-5C7856D4625E@lysator.liu.se> <202002281113.01SBDlsl017697@higson.cam.lispworks.com> In-Reply-To: <202002281113.01SBDlsl017697@higson.cam.lispworks.com> From: Luoqi Chen Date: Fri, 28 Feb 2020 08:42:52 -0800 Message-ID: Subject: Re: Linux could write to read only files on FreeBSD NFS server To: Martin Simmons Cc: Rick Macklem , freebsd-fs X-Rspamd-Queue-Id: 48Tb1y2B19z4Jlq X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=BPxsXROl; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of luoqichen@gmail.com designates 2607:f8b0:4864:20::344 as permitted sender) smtp.mailfrom=luoqichen@gmail.com X-Spamd-Result: default: False [-3.00 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; RCVD_COUNT_TWO(0.00)[2]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[4.4.3.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; IP_SCORE(0.00)[ip: (2.94), ipnet: 2607:f8b0::/32(-1.88), asn: 15169(-1.67), country: US(-0.05)]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Feb 2020 16:43:03 -0000 On Fri, Feb 28, 2020 at 3:13 AM Martin Simmons wrote: > >>>>> On Thu, 27 Feb 2020 14:58:55 -0800, Luoqi Chen said: > > > > One more piece of information that might help: this behavior started > > somewhere between centos 5 and 6, kernel 2.6.18 and 2.6.32, i.e., the > same > > script would fail on 2.6.18. Timing wise I believe it coincided with the > > introduction of nfsv4. > > Have you tried mounting it with nfsv3 recently? I can't repeat it with > that > version (I don't run nfsv4 at all). Looks like I'm getting senile... The script works correctly with nfsv3 mounts. This is a nfsv4 specific problem.