hello, thanks for the explanations migz and doc pabz.
apparently, the cpu scaling is causing me the problem. when set to 'performance' or 2.4ghz, utils like cp & rsync works perfectly. but if setting's like ondemand or powersave, etc. the resulting output file is always corrupted. dd most of the time works, but not always. im on ubuntu hardy 8.04, with p4-clockmod driver. im now actually thinking of deactivating cpu scaling on this machine (isa pa, parang lag kahit naka ondemand sya). thanks. On Mon, Jun 1, 2009 at 9:45 AM, Pablo Manalastas <[email protected]> wrote: > > It is possible that the original file has holes, and the > cp expanded the holes. Thus the md5sum computed different > checksums. Maybe this is the reason? > > Note that holes can be created by write(...), lseek(...), > write(...). > > Pablo Manalastas > *** > > --- On Mon, 6/1/09, Edel SM <[email protected]> wrote: > >> From: Edel SM <[email protected]> >> Subject: [plug] md5sum >> To: "Philippine Linux Users' Group (PLUG) Technical Discussion List" >> <[email protected]> >> Date: Monday, June 1, 2009, 5:32 AM >> ano kaya prob nito? >> >> r...@gw:~# cp appVM-cos5x.tar.7z /data/ && md5sum >> `pwd`/appVM-cos5x.tar.7z /data/appVM-cos5x.tar.7z >> d02e4f177a6c634496a7cb8a7c5c85bb >> /root/appVM-cos5x.tar.7z >> f54fd2f63d6561678ac7e76353c9bb33 >> /data/appVM-cos5x.tar.7z >> r...@gw:~# >> >> i always end up two different files. could it be because i >> have a >> slower processor (pentium4 2.4ghz)? or my memory module is >> faulty? >> >> i havent done doing a mem check yet. >> >> thanks. >> >> -- >> edel > _________________________________________________ > Philippine Linux Users' Group (PLUG) Mailing List > http://lists.linux.org.ph/mailman/listinfo/plug > Searchable Archives: http://archives.free.net.ph > -- edel George Bernard Shaw - "A government that robs Peter to pay Paul can always depend on the support of Paul." - http://www.brainyquote.com/quotes/authors/g/george_bernard_shaw.html _________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List http://lists.linux.org.ph/mailman/listinfo/plug Searchable Archives: http://archives.free.net.ph
