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[139.178.88.99]) by mx.google.com with ESMTPS id dh4-20020a056a020b8400b005c277eadf93si1079809pgb.318.2023.11.30.02.18.08 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Nov 2023 02:18:08 -0800 (PST) Received-SPF: pass (google.com: domain of linux-nfs+bounces-192-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20230601 header.b=HItmCpjA; spf=pass (google.com: domain of linux-nfs+bounces-192-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-nfs+bounces-192-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id 54FF3281EA4 for ; Thu, 30 Nov 2023 10:18:08 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2963F3B2A9; Thu, 30 Nov 2023 10:18:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="HItmCpjA" X-Original-To: linux-nfs@vger.kernel.org Received: from mail-ed1-x52f.google.com (mail-ed1-x52f.google.com [IPv6:2a00:1450:4864:20::52f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF63810C9 for ; Thu, 30 Nov 2023 02:18:03 -0800 (PST) Received: by mail-ed1-x52f.google.com with SMTP id 4fb4d7f45d1cf-54bb5ebbb35so717474a12.1 for ; Thu, 30 Nov 2023 02:18:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701339482; x=1701944282; darn=vger.kernel.org; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=pagUBROBEXza8r8q6jx08G2EC1EZTWb5JhhcZz/zLJw=; b=HItmCpjA5AdBnzXcQ4OgF1DMgwDmbWDXiPxvzU32hqvpqR8ogI7zH/4xpzIhdmEhSo v+OaiCwM1ZIE3DKd5H7pqIld2kUHUOWxbuYBIrpC/lhAOQNkabGr/pZXVJsIqXTUOGw9 caLnATfiv8s8qBonZXqSPp8IMqbKqz8JqNvXJHBJAzhDxjBFQKGfn05jXcJr/47HBXDs lELkmM6t3gGZTt2f0bnkmeuIuLLjF+e9BxJ8vd8GL9hTSALHU4DEq5IDtuhOhBgJk68y u7wgP9tbzrdhXe1APqtiTZjDMcbs2BqB5ZEJ0gVcE699jyklcC2aYXsT4672XMhadSUM p1EQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701339482; x=1701944282; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=pagUBROBEXza8r8q6jx08G2EC1EZTWb5JhhcZz/zLJw=; b=saAfH5Fct9SxJPiwo29ZkA8CZFEcF/bynUKRIKuYLLS0hfTTcmW4VZ2p5/8g56i6/l jtBREYTje5DwOmWLIccloi5YG8kuCqHByucRs4zQTQzjv0h1aCy1XdSd84a+t5uF9aPg /9dcQxE8hHUogYd2S1Pn1srfE7r+uWp/AtLb8JVUuX0QzHMsKVTzphpjfUQYwWfdznUV 2T53ud5OWfL9XxGGGpExQsHtjQjp+eaMlvf/qE1AQZQEE8Dgx/wMGMMoR9aa6TpiF0OC EwO7gSMnZNJSzwGujXW/idl0UjLcwqFpXxW2gAJY2yAKgAqaWvLPp0sAGNuEuRMqzzpv M1Kg== X-Gm-Message-State: AOJu0YwJw9xyTnQ3Cs6j8LFaSNtbKbZOgYFN/9iiT2u9F3PTvxnVmvFR NNNKMp2wjHA6iQEwU6P6jadEZ6Rst2Bf5mjfjSrUPQ19T4Y= X-Received: by 2002:a05:6402:94e:b0:540:e588:8243 with SMTP id h14-20020a056402094e00b00540e5888243mr12938691edz.20.1701339481889; Thu, 30 Nov 2023 02:18:01 -0800 (PST) Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Cedric Blancher Date: Thu, 30 Nov 2023 11:18:00 +0100 Message-ID: Subject: NFSv4.2: How to deallocate a range of bytes in a file, aka "punch a hole"? To: Linux NFS Mailing List Content-Type: text/plain; charset="UTF-8" Good morning! Linux has fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, ...) to punch a hole into a file, i.e. deallocate the blocks given and make the file a "sparse file". But how is this implemented on NFSv4.2 COMPOUND level? How does a NFSv4 compound look like to punch a hole say from position 30000 to position 35721? Ced -- Cedric Blancher [https://plus.google.com/u/0/+CedricBlancher/] Institute Pasteur