Date: Thu, 3 May 2007 07:10:37 -0500 From: David Kelly <dkelly@HiWAAY.net> To: David Banning <david+dated+1178599299.38573d@skytracker.ca> Cc: questions@freebsd.org Subject: Re: can't zip large files 2gb > Message-ID: <25CFA57D-585A-43F1-A5EF-9A1F82BE0A16@hiwaay.net> In-Reply-To: <20070503044136.GA57871@skytracker.ca> References: <20070501195825.GA10269@skytracker.ca> <20070502093757.GA2835@kobe.laptop> <20070502162657.GA21779@skytracker.ca> <20070502171723.GA1615@kobe.laptop> <20070502180815.GA50145@skytracker.ca> <20070502190950.GA84501@Grumpy.DynDNS.org> <20070503044136.GA57871@skytracker.ca>
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On May 2, 2007, at 11:41 PM, David Banning wrote: >> I haven't been paying 100% attention. Just how does it fail? What >> do you >> mean by "corrupt"? >> >> Does the process run to completion? > > All programs zip with no errors. On reading; > > root# bzip2 -t zippedfile.bz2 > bzip2: 3s1.com-smartstage_ftp-full-20070502-0125AM.1b.tar.bz2: > data integrity (CRC) error in data Can't keep from thinking somehow your hardware is broken because myself and others have been gzip, bzip, zipping, large files for a long time under FreeBSD without problems. BUT on 6.0 I had intermittent problems trying to download files over 4 GB with FreeBSD. But seemingly only with "old" files, more than a day old. A workaround was to cat file > /dev/null from a shell login about the same time as I started the ftp download. This clue helped eventually find the real problem in the FreeBSD kernel. Just for kicks, try "cat file > /dev/null" while the compression process is running on same file. This might help keep your source file in cache while the compression process runs. Apparently you have a spare original copy of the data laying around but another thing to try is "gzip -c file > file.gz" which does not destroy the original. -- David Kelly N4HHE, dkelly@HiWAAY.net ======================================================================== Whom computers would destroy, they must first drive mad.
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