From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zach Brown Subject: Re: btrfs csum failed on git .pack file Date: Thu, 17 Sep 2009 10:00:28 -0700 Message-ID: <4AB26B2C.9030703@oracle.com> References: <20090907203531.GA1889@phenom2.trippelsdorf.de> <20090908200041.GF18599@kernel.dk> <20090917050512.GB1916@phenom2.trippelsdorf.de> <20090917064456.GZ23126@kernel.dk> <20090917090428.GA1877@phenom2.trippelsdorf.de> <20090917090549.GE23126@kernel.dk> <20090917121501.GB1877@phenom2.trippelsdorf.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Jens Axboe , linux-btrfs@vger.kernel.org To: Markus Trippelsdorf Return-path: In-Reply-To: <20090917121501.GB1877@phenom2.trippelsdorf.de> List-ID: > 0130 9FA0: E2 3B 43 AA 63 BF 28 B3 87 B7 FD AB DA 74 2D 1C > 0130 9FA0: E2 3B 43 AA 63 BF 28 B3 87 33 FD AB DA 74 2D 1C B7 = 10110111 33 = 00110011 > 06CD DF90: B0 22 6B 46 9F ED 6E 47 73 5E 7E EB DA 5F D6 11 > 06CD DF90: B0 22 6B 46 9F ED 6E 47 73 1E 7E EB DA 5F D6 11 5E = 01011110 1E = 00011110 > 06CD DFC0: 0D 86 2B B2 57 A4 5A CD 78 4B 08 94 C0 65 17 3A > 06CD DFC0: 0D 86 2B B2 57 A4 5A CD 78 0B 08 94 C0 65 17 3A 4B = 01001011 0B = 00001011 And so on. It looks like a few bits are getting flipped at the same byte offset. One can imagine software bugs that would do this, certainly, but upset hardware seems awfully likely too. - z