From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailgw-02.dd24.net ([193.46.215.43]:33515 "EHLO mailgw-02.dd24.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754831AbcH1Dq1 (ORCPT ); Sat, 27 Aug 2016 23:46:27 -0400 Received: from mailpolicy-01.live.igb.homer.key-systems.net (mailpolicy-02.live.igb.homer.key-systems.net [192.168.1.27]) by mailgw-02.dd24.net (Postfix) with ESMTP id D94235FFCA for ; Sun, 28 Aug 2016 03:46:02 +0000 (UTC) Received: from mailgw-02.dd24.net ([192.168.1.36]) by mailpolicy-01.live.igb.homer.key-systems.net (mailpolicy-02.live.igb.homer.key-systems.net [192.168.1.25]) (amavisd-new, port 10236) with ESMTP id Biftxkib7mr8 for ; Sun, 28 Aug 2016 03:46:01 +0000 (UTC) Received: from heisenberg.fritz.box (ppp-46-244-220-90.dynamic.mnet-online.de [46.244.220.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mailgw-02.dd24.net (Postfix) with ESMTPSA for ; Sun, 28 Aug 2016 03:46:00 +0000 (UTC) Message-ID: <1472355960.16760.9.camel@scientia.net> Subject: does btrfs-receive use/compare the checksums from the btrfs-send side? From: Christoph Anton Mitterer To: linux-btrfs@vger.kernel.org Date: Sun, 28 Aug 2016 05:46:00 +0200 Content-Type: multipart/signed; micalg="sha-512"; protocol="application/x-pkcs7-signature"; boundary="=-vrqSG76xc9dlRL7Kisaa" Mime-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org List-ID: --=-vrqSG76xc9dlRL7Kisaa Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hey. I've often wondered: When I do a send/receive, does the receiving side use the checksums from the sending side (either by directly storing them or by comparing them with calculated checksums and failing if they don't match after the transfer)? Cause that would effectively secure any transport in between against transmission errors ... and also against badblocks/etc. on the receiving fs. If btrfs is already that smart, then I think this feature should be mentioned in the send/receive manpages. Cheers, Chris. --=-vrqSG76xc9dlRL7Kisaa Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCCEmow ggXiMIIDyqADAgECAhBctkhuRwyYxn/2gNtkSuKNMA0GCSqGSIb3DQEBCwUAMH0xCzAJBgNVBAYT AklMMRYwFAYDVQQKEw1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0 aWZpY2F0ZSBTaWduaW5nMSkwJwYDVQQDEyBTdGFydENvbSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0 eTAeFw0xNTEyMTYwMTAwMDVaFw0zMDEyMTYwMTAwMDVaMHUxCzAJBgNVBAYTAklMMRYwFAYDVQQK Ew1TdGFydENvbSBMdGQuMSkwJwYDVQQLEyBTdGFydENvbSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0 eTEjMCEGA1UEAxMaU3RhcnRDb20gQ2xhc3MgMiBDbGllbnQgQ0EwggEiMA0GCSqGSIb3DQEBAQUA A4IBDwAwggEKAoIBAQDuD1CMlQkjhKz1UGqP1jeiTiH9MgllRz6vOPrVG/eE0H/J4QQLV/PeL8RT 4xc44bEzsoJu0IhwnEchb+TxE/qw88w7hxODuw3N8Faxix6a1jp83+RWvZHZf78+O+3GYBpekZfT Oe9A/FoTXbcgwZfLTMQodn+ckNnX31M/1M2f2/7VA7QBlvihontyHQOlIlryQXnGI0UMCD21oopK 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