From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from meiko.romanrm.net ([195.154.92.155]:60322 "EHLO meiko.romanrm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752412AbcEKTBK (ORCPT ); Wed, 11 May 2016 15:01:10 -0400 Date: Thu, 12 May 2016 00:01:03 +0500 From: Roman Mamedov To: Richard Lochner Cc: linux-btrfs@vger.kernel.org Subject: Re: BTRFS Data at Rest File Corruption Message-ID: <20160512000103.7ba65149@natsu> In-Reply-To: References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/VnPVj+aWi/DBbGtyH=wnNWC"; protocol="application/pgp-signature" Sender: linux-btrfs-owner@vger.kernel.org List-ID: --Sig_/VnPVj+aWi/DBbGtyH=wnNWC Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Wed, 11 May 2016 13:36:23 -0500 Richard Lochner wrote: > Recently, a scrub returned an unrecoverable error on that file. > Again, the file has not been modified since it was originally copied > and has the time stamp from December. Furthermore, SMART tests (long) > for both drives do not indicate any errors (Current_Pending_Sector or > otherwise). >=20 > I should note that the system does not have ECC memory. > [2027323.705035] BTRFS warning (device sdc1): checksum error at > logical 3037444042752 on dev /dev/sdc1, sector 4988750584, root 259, > inode 1437377, offset 75754369024, length 4096, links 1 (path: > Rick/sda4.img) > [2027323.705056] BTRFS error (device sdc1): bdev /dev/sdc1 errs: wr 0, > rd 13, flush 0, corrupt 3, gen 0 > [2027323.718869] BTRFS error (device sdc1): unable to fixup (regular) > error at logical 3037444042752 on dev /dev/sdc1 I wonder, did you try rebooting the system after getting this? And if you g= et the same error also after a reboot, check if the sector/offset numbers are = the same. That way you could at least rule out any kind of transient (RAM?) err= ors. --=20 With respect, Roman --Sig_/VnPVj+aWi/DBbGtyH=wnNWC Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlczgXIACgkQTLKSvz+PZwiy4wCfc/YDk8r7h/TW3iVW2CwKRtew q1QAn3Up4GQ9WzlbKFGSgGVkSF1p2D+M =n5J0 -----END PGP SIGNATURE----- --Sig_/VnPVj+aWi/DBbGtyH=wnNWC--