[Gluster-users] Inconsistent md5sum of replicated file

[Anthony Delviscio]

John, thanks for supplying the binary diff.
While we our email addresses may not be of the same domain name, we do work
together, and I can vouch for his submission to this thread. :-)

On Thu, Sep 8, 2011 at 11:34 AM, Zaitz, John <jzaitz at netsuite.com> wrote:

> Hi Harald, I am a co-worker of Anthonys. Below is the binary difference of
> these two files.
>
> [root at redohpssh1001 db241_gluster]# cat g/nldb241_nlcompany_data105.dat.gz
> | od -x > hex1 && cat h/nldb241_nlcompany_data105.dat.gz | od -x > hex2
> [root at redohpssh1001 db241_gluster]# diff hex1 hex2
> 137469984c137469984
> < 20306715040 7513 95c3 ffd8 617f 13e8 04db 93db fbb6
> ---
> > 20306715040 0000 e8e2 0000 0000 13e8 04db 93db fbb6
> 137474082c137474082
> < 20307115100 bfc3 a622 3468 1d9a 0abd ff2b 8baf 894e
> ---
> > 20307115100 0000 0000 0400 25b8 0abd ff2b 8baf 894e
> 137482278c137482278
> < 20307515200 898a ebcc 787c a144 8c6e f82b 0973 eccf
> ---
> > 20307515200 0000 0000 0000 0000 0000 0000 0000 0000
> [root at redohpssh1001 db241_gluster]# for  i in md5sum sha512sum sha512hmac
> ; do $i ./h/nldb241_nlcompany_data105.dat.gz ; done
> f85391147d89fe69be962933607834e3  ./h/nldb241_nlcompany_data105.dat.gz
> ae6cfa8d4048e6bd422c504dfc3bf5edb5b6998838419a56874f38a13ee0adfe41652e87469525d421d149a57add7e8c003da695a484eab04d40c484ad116fdb
>  ./h/nldb241_nlcompany_data105.dat.gz
> bf25c1dac27897bf1265e06010ec0851e49c0caeb8a84daed3e9e5254902605785c73addfebee03ad91e5d81e8af69af929fe5e65f0060d50c67b3e1617347a0
>  ./h/nldb241_nlcompany_data105.dat.gz
> [root at redohpssh1001 db241_gluster]# for  i in md5sum sha512sum sha512hmac
> ; do $i ./g/nldb241_nlcompany_data105.dat.gz ; done
> e52600235154bcdf1201e20619dcd5da  ./g/nldb241_nlcompany_data105.dat.gz
> e5744a9c8535e1ff8dcbf12b922d1497b4a59df4b3dbf596e9eb9f58de43eb6a2b156dcf826c6c98366538821df9327cbb284f4f1265f7d7df11130e0e72f74e
>  ./g/nldb241_nlcompany_data105.dat.gz
> 2ad2af671e8a0157a940766552ffeb075324d78fa4d9ae8f008a7b8a5e6e8a9b9d33ccedc9cb8314ab005054eaafbd7c9292d7af09007ac491f727bbf24b86fe
>  ./g/nldb241_nlcompany_data105.dat.gz
> [root at redohpssh1001 db241_gluster]#
>
>
>
>
> -----Original Message-----
> From: gluster-users-bounces at gluster.org [mailto:
> gluster-users-bounces at gluster.org] On Behalf Of Harald Stürzebecher
> Sent: Thursday, September 08, 2011 1:46 AM
> To: gluster-users at gluster.org
> Subject: Re: [Gluster-users] Inconsistent md5sum of replicated file
>
> Hi!
>
> 2011/9/8 Anthony Delviscio <adelviscio at gmail.com>:
> > Pranith, the md5sum mismatch was noticed Tuesday (9/6) morning via an
> > automated process that verifies file checksum consistency between what is
> > stored on Gluster and the source.  However, the file was written to
> Gluster
> > on 8/31.  We're not sure if something happened between 8/31 and 9/6 that
> > would make the replicas inconsistent.  It was only after looking at the
> file
> > via backend storage on Tuesday we noticed that there was an inconsistency
> > between the two replica copies of the file.
>
> Would it be possible for you to make a binary diff of the two files?
> I'd be interested to know if the difference is just a few flipped bits
> or if the files are very different.
>
>
> Regards,
>
> Harald Stürzebecher
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