From mboxrd@z Thu Jan 1 00:00:00 1970 From: "George Spelvin" Subject: Re: Exciting :-( adventures in metadata checksumming Date: 9 Aug 2012 01:00:58 -0400 Message-ID: <20120809050058.23273.qmail@science.horizon.com> References: <20120808234239.4443.qmail@science.horizon.com> To: linux-ext4@vger.kernel.org, linux@horizon.com, tytso@mit.edu Return-path: Received: from science.horizon.com ([71.41.210.146]:13951 "HELO science.horizon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751810Ab2HIFBA (ORCPT ); Thu, 9 Aug 2012 01:01:00 -0400 In-Reply-To: <20120808234239.4443.qmail@science.horizon.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: I think indeed it was a RAM issue. After some cache-flushing, e2fsck on the file system with the checksum errors reported no errors, even though there wasn't even a reboot in between. (Then I discovered the "e2fsck -F" flag, which would have been a lot simpler than what I did instead. Oh, well.) Looking in the BIOS, I found some suspicious timing parameters that might be responsible, and reset them to stock. I'll know for sure if the problem stays away for a month, but in the mean time, thank you everyone for your help and patience, and consider the matter resolved unless I find more problems. Sorry for the false alarm.