From nobody Mon Nov 18 10:28:28 2024 X-Original-To: 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 4XsP3g4Yjrz5cfxH for ; Mon, 18 Nov 2024 10:28:31 +0000 (UTC) (envelope-from avg@freebsd.org) Received: from smtp.freebsd.org (smtp.freebsd.org [IPv6:2610:1c1:1:606c::24b:4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4XsP3g3yZpz48WC; Mon, 18 Nov 2024 10:28:31 +0000 (UTC) (envelope-from avg@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1731925711; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=sXaiU+76dCXYv2Oh3XlSzGEFCA2Lx4crLN+PYTZdOyQ=; b=rQUA3Tex/td+z1MKkhtldiKIms9npOhv4oaZj7hPZaJhOcZhGiCExYMH8FaGDgRI1yDBmx CkE3Vf9KMxDeM8LJs8s0pgBafxvj3uDSXxrwyXmlQgJFQkp1VqXwaWhr/pYofbr6hS83TR 9FHRLyWcKCsIp7wzag0fvJ54vuR52Mx3QUARbpMHQ9anyYsB/BpK7uUltnMmw4ZSokuGOb +xyTxFPzrqgYk6bt4ZGolmP+eX8sXMzUKigRxpEjhRWFZYnQeVsSgJw1mloPTEcUrFGCpl lsN4mEbjeMUTvNn0y+cDFdTHNR0BdLZgq6D2Qej5JHo7Be5rIhFC/ybdzsGhvg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1731925711; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=sXaiU+76dCXYv2Oh3XlSzGEFCA2Lx4crLN+PYTZdOyQ=; b=aeiTfw3LfZCFIY2t8QOpNEFQqQiFiaWTrts5cukqXQH9AxSiSRSkU7WWGmhOapImm6kZ41 /v8nQxiFAZrCTXJo7J8hgM5E+x4BM3VLPfrda3yUFx5X8PY4mT7NydDP3oBRGERaD0bjd6 rvGNxYFUl/cwS05MkLM8+Gn1V3dFOa/DllvpSjnCs3a1ZtmfNAcTgaj2YoBFmSPnmX9m2v NlocphaXKc3beDuLGWjLaOycpsazVPIk2QJU/F7VhHzznxJkJsvBf7jzHfaPJB0QLRqU1T npQKCFI3K7NNatYS/TRT0OaXsE6rzEfQFVfrO0jaDhxpHDK2/l4IFBTKgsph/g== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1731925711; a=rsa-sha256; cv=none; b=WRQzWK1kO1HLNdOnbR2xTEa1RYARiJolTVc+NCga6yzyAfxPb8MpjEMZFFLhqog/933tph gRPK7UX9tcW6bE3nJ+hVfHJMvkILVB1hLjwmPn8eV5KY9gG3aEytVSjs1RU6XelVoKC42F l1IU6vZvoik4c1ufF6bU7ZzC+2aI0c0mi5qV0fFuWq1HhTnr5Hbtzvhw4BLboTMSoZO4A6 vt6M3vDVigjzHPunDG1obOYY4XmyXs8yqO6+zUsFv2BdaVGPx1S2oXegpOrpwwhHol/pwK hN7hTpiR0C559R4flzXOIUoumFuUzvbZZz5lrS1/hcaFenn+zF6IPZr/4oHiqg== Received: from [192.168.0.88] (unknown [93.188.39.137]) (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 did not present a certificate) (Authenticated sender: avg/mail) by smtp.freebsd.org (Postfix) with ESMTPSA id 4XsP3g0wWCzhQP; Mon, 18 Nov 2024 10:28:30 +0000 (UTC) (envelope-from avg@freebsd.org) Message-ID: <4334a3f7-5246-46db-ad43-771bd797ec05@freebsd.org> Date: Mon, 18 Nov 2024 12:28:28 +0200 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 User-Agent: Mozilla Thunderbird From: Andriy Gapon Subject: Re: tmpfs loses (sub-page chunks of) data? To: Konstantin Belousov Cc: freebsd-fs References: <140eb994-ae19-41b4-8f0e-fc4290603ce0@freebsd.org> Content-Language: en-US Autocrypt: addr=avg@freebsd.org; keydata= xsDNBGcKrHEBDADRvwQOK0b/yo4ys5cs6bOQMhEh4xtfbaZ/CU00cpPgUip3sOZCdrtMWlRC g25z97prxE9pKueZi+HXDhIPpa9xl14ghqF4oYScuJ1i18HyiOH2y5Q3Vv/TtFiSzicd3EAu QgS3jVidpgDSPDdj2Yz3UxYpZ+PuFl6nOnvCvqOFcjUlzKCyPaiN2b86l1Nscmhnc+zQ/faB erUOEFEDQbWMA5YfXi8HrbeR16hfRfGt7E0aMDlIj9FIPIq71UWMN9CimPgs4+rbNr1MAlLa z4GxSDhVYZEY5rqtCzr+PLXboRQWnaUwXl0/biw9enf17NHdYv1SNAFTX2eC4dZ3qBVI74dS PgNprm+PMfz+6Hhs/dAv+Nan5nVhg3EFIjYTiy0MnjMSq8uI0v0ykpAGAcJJ5xl6d23aLxgN 6f0z6pJRCO0hGPgU7UzvFD0MxJxmbzqdT1R51KDan1oD41b+tjl2LMBuCDCoB0U44Pu0zLdp xMfFTxCXtwIYKIUxwd28jwMAEQEAAc0eQW5kcml5IEdhcG9uIDxhdmdARnJlZUJTRC5vcmc+ wsENBBMBCAA3FiEEmXvSmjiQFHPVOpLnzDOt5NLj67sFAmcKrHEFCQeEzgACGwMECwkIBwUV CAkKCwUWAgMBAAAKCRDMM63k0uPru5tSDACFK15LLbq89RSQ6QMnjiIm1t/wYJyumb519MHu Dhzxx1lbr8oghf0RHtF6kYRLQPaW2VdToi74pRobd3CN4bhZKDLSL6WfTn17RfavDjL6Njwp KBo30CkOeYKWq1mDmo0xEoQj8cc7ybEZnus+YScZOpj8Ti4EFwhRt6SHer7YDb161IHKL8m4 MsCxpFSGEjbKj8Iul3Ri/fTOO8w14ivcuEEQIvJt4/+4YV5Az8G23wKzL/3aJ7SOT3oYGmR9 atBTmVO3DlODjM+rZLegd8SfLSPTcBTHspWE5duemIzZbEX3BP77r3Qx4Fo5Tkit3bG1XVar yPQato+sFGFEGifdE9USBQoAoOaaeZevwAWjDU0TIuCT0CUe0sKtQuNP4LRq0n9EEHOXBu9a CfdMhFUSkAZnuE7miSVwgPvoVNJ1stA37EXLN/sVsWik7wslTQ5vF81VpdGFiwoQPOe2XEKh ogcwGSnXbwv1gD4x+Gz/7Y+kFyr1NY+4/nSaeXVcS2fOwM0EZwqscgEMAMQTe6ypAmQe/TFO HqKD2hfFKdksTptKi6uEh8xIwct8G/0FBldDWXo9eu8CGr/ZrDg0/bAwJxbaLRQCMH19Gq2Y hLvZ1QK5GQJVzZKcqfxbF2LiDUTs6WkdOBIhGpdDy7p1xFrvqCGCtNFYHuGYm067EozibBSF BWAPstKu2FQuVHZNMOfs7p3OIz3Yfqu9woXDeg3/8G2qVQJINe+8EwXKlhgh4CyDbq7nAZoA kIu1SE9z9u3WI5mcNy/0dFmVUsFxBqRC3ewbvzie8tKyZ9yFOlaZPT0Y4nRBXQTI3mLZ8zQ8 mtrWK5OOmrJ02kdeO9RBXe+OMaUUWMf92ZIoBFb4HP6N+B+4N1y1OwULousfl7JRoYxA4MRL ls7E2sSoJvrEBTJB3Pc34xu8rsJ1A5V3NgN6djX8yEZYpTRkcmrBeWy/ofDqZPVqneAx0LRm eldDS9msXDW4KXODyPZ+9unvmHAcoH0xaBYaSH44CDZDQDg4LNcmbOvuu1TEXBJhjQARAQAB wsD8BBgBCAAmFiEEmXvSmjiQFHPVOpLnzDOt5NLj67sFAmcKrHMFCQeEzgACGwwACgkQzDOt 5NLj67sUCAv5AXqgWnYN9EblapMbZjkiqL8pZQ0GNqh+Pg9FwbyULxjtRTO6rD4D0IxizByb ef+neeUNyYlagt5nfKMysEr0SU/gHKCi8vyTF/63ukMrGUNGmJJxrndl5ZYKC6j6eX7twrZF L1Uvlmn6FnQ22red5kHO93fDjG4zaDIZvHfwj7kzjZ4tpC7Byinf88s14mdZeScc0PnU2hj4 UGYju/wg2FF4YxaZYhcmdTiRYY0Wx85XSMZv19pnn78sadEuRvfRd4JTmw++j1xGXeqQGWzz /CTG5/Ex9GAkQ02hZbmi236byDXoet4G8TEyOph9QFVkV9bNd0jQZaFZPGEj4PSPUYGAF7s5 xJaNGgctC3aZ7WjEv1FBoo44XCU4xcjJ1wZQUrHxRhx6TW0Jtcl0U9qfKFW30TSPo6RyiXuj X4ltWKAtjoXB8nUmEJckaz7IRu2b4pXDeazZuz5JBygUs10yJjDxh2vFQZo0KaBAPx9MZlPn gpPTjT15L8xGftEjQXF6 In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 17/11/2024 04:10, Konstantin Belousov wrote: > On Sat, Nov 16, 2024 at 02:31:25PM +0200, Andriy Gapon wrote: >> I think that mmap is not involved at all. >> Files are written from kernel using kern_writev(). > Why? Why from kernel or why kern_writev? That's how our appliance works. >> After they are complete, they are read from userland using whatever libssl >> uses to read input files (when encrypting). Looks like that's fread(3) / >> read(2). > > Try to reproduce it on the HEAD kernel. > Then, turn off swap and see if it is still there. > On HEAD, if reproducable without swap, try to add 'pgread' option to the > tmpfs moount. > > I am interested if the issue persists after all the measures listed above. Switching the systems where the problem happens to HEAD would be very nontrivial, unfortunately. I can experiment with swap and pgread much more easily. Thank you for suggestions. -- Andriy Gapon