Before you file a bug report, may I suggest: - Try gunzip-ing on a different Linux system.
It might tell you something. -Mark On Thu, 14 Mar 2002, Peter Jay Salzman wrote: > hmmm... i'm still reluctant to say that there's a bug in gzip or bzip2. > it would be like saying that mcdonalds has been making french fries > incorrectly all these years. it's like, someone should've noticed by > now. > > but i'm fresh out of ideas. i'm not sure what else to say. > > i took a look at deja just now and didn't find anything particularly > useful for your situation. why don't you file that bug report and see > what they have to say? > > pete > > begin Kevin Dawson <[EMAIL PROTECTED]> > > Hi Pete, > > > > The files I'm having the problem with are just 50M and 30M after gzip. > > > > I followed your suggestion. Everything was going fine up to 1M. Using > > 10M, I had to learn that I didn't have 20G disk space available on > > /home. Using 100k, the created file size is in the range of my problem > > files (50M), can be compressed to only 50k, and uncompressed perfectly. > > It looks like that the problem is dependent on the size of the > > compressed file (30M in my case). > > > > bunzip2 is also having trouble. It says: > > bunzip2: Data integrity error when decompressing. > > Input file=bigfile.bz2, output file=bigfile > > > > It is possible that the compressed file(s) have become corrupted. > > You can use the -tvv option to test integrity of such files. > > > > When I do the test, it will print > > [N: huff+mtf rt+rld] whereas N goes up to 29. > > Then it prints: data integrity (CRC) error in data. > > > > When gunzipping the files, I don't hear any unusual disk churning. > > > > Thanks again, > > > > Kevin > > > > > > > > > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]] On Behalf Of Peter Jay Salzman > > Sent: Thursday, March 14, 2002 10:38 AM > > To: [EMAIL PROTECTED] > > Subject: Re: [vox-tech] gzip bug? > > > > hi kevin, > > > > just out of curiosity, when you say it happens with all big files, how > > big is big? 1k? 10k? 100k? are youa bioinformatics dude? ;-) what > > i'm getting at is -- are you dealing with files near the 2GB limit? > > > > what happens when you try to do something like: > > > > dd if=/dev/zero of=mybigfile count=10k > > cp mybigfile myotherbigfile > > gzip mybigfile > > gzip -d mybigfile > > diff mybigfile.gz myotherbigfile > > > > change the 10k to whatever you need to reproduce the crc error. also, > > 10k of /dev/zero should produce about a mp3 sized file (5 Megs). > > > > if you can reproduce the CRC error this way, i totally encourage you to > > write to [EMAIL PROTECTED] gzip is one of the things that really ought > > to be rock solid. you can screw around with USB and TV tuner cards, but > > gzip and bzip2 are our meat and potatoes. > > > > btw, does this problem happen with bzip2? > > > > also, when you gunzip these large files, how hard does your machine > > thrash? does the hard drive go like mad? > > > > pete > > > > begin Kevin Dawson <[EMAIL PROTECTED]> > > > Hi Pete, > > > > > > Thank you for your suggestion. I'm using gzip 1.3 and gunzip 1.3 on a > > > VFS file system. I'm having problems with practically all big files. > > The > > > files are corrupted without ever leaving the Linux machine. For > > > trouble-shooting with WinZip, I transferred some files to Windows > > using > > > Samba. > > > > > > The exact error message reads as: > > > gunzip: MX.mat.gz: invalid compressed data--crc error > > > > > > Your filter suggestion is great. It works, although, I'm still getting > > > the error message: > > > gzip: stdin: invalid compress data--crc error > > > > > > Thank you, > > > Kevin > > > > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED]] On Behalf Of Peter Jay Salzman > > > Sent: Thursday, March 14, 2002 9:59 AM > > > To: [EMAIL PROTECTED] > > > Subject: Re: [vox-tech] gzip bug? > > > > > > hi kevin, > > > > > > stream of consciousness: > > > > > > are you saying ALL files on redhat can't be gunzipped? or only > > > particular files? was this file transfered using windows ftp or http? > > > perhaps it went through a NL/CR conversion? faulty kermit transfer? > > > where was the file created? under a vfat system or under a VFS > > (linux) > > > system? > > > > > > try to use gzip as a filter: > > > > > > gzip -d <myfile.gz >myfile > > > > > > this will unzip as far as gzip can go before reaching the CRC error. > > > it might recover some of your data. > > > > > > also, can you post the exact error message (always a good thing to do > > > when asking for help when something complains!) > > > > > > can you post gzip's version number and mail me (not the list) a copy > > of > > > the file you're trying to unzip? i'll give it go here. > > > > > > pete > > > > > > > > > begin Kevin Dawson <[EMAIL PROTECTED]> > > > > Hi, > > > > > > > > I cannot gunzip my gzipped files on RedHat 7.1. I get CRC error > > > > messages. On the other hand, when the files are transferred to > > > Windows, > > > > WinZip opens them without any complain. Do you know any known bugs > > in > > > > gzip or gunzip? Do you know another uncompressing utility on Linux > > > which > > > > does not invoke RedHat's gunzip to uncompress a .gz file. > > > > > > > > Any suggestion is appreciated. > > > > > > > > Kevin > > > > > > > > _______________________________________________ > > > > vox-tech mailing list > > > > [EMAIL PROTECTED] > > > > http://lists.lugod.org/mailman/listinfo/vox-tech > > > _______________________________________________ > > > vox-tech mailing list > > > [EMAIL PROTECTED] > > > http://lists.lugod.org/mailman/listinfo/vox-tech > > > > > > _______________________________________________ > > > vox-tech mailing list > > > [EMAIL PROTECTED] > > > http://lists.lugod.org/mailman/listinfo/vox-tech > > _______________________________________________ > > vox-tech mailing list > > [EMAIL PROTECTED] > > http://lists.lugod.org/mailman/listinfo/vox-tech > > > > _______________________________________________ > > vox-tech mailing list > > [EMAIL PROTECTED] > > http://lists.lugod.org/mailman/listinfo/vox-tech > _______________________________________________ > vox-tech mailing list > [EMAIL PROTECTED] > http://lists.lugod.org/mailman/listinfo/vox-tech > -- Mark K. Kim http://www.cbreak.org/ PGP key available upon request. _______________________________________________ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech