Date: Sun, 11 Apr 1999 21:03:40 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Brian Feldman <green@unixhelp.org> Cc: Alfred Perlstein <bright@rush.net>, current@FreeBSD.ORG Subject: Re: have live system with NFS client cache problems what do i do? Message-ID: <199904120403.VAA15110@apollo.backplane.com> References: <Pine.BSF.4.05.9904112323420.36814-100000@janus.syracuse.net>
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:> corruption is occuring on the client. But if the make procedure is not
:> accessing (much of) the client's hard drive, where on the client could
:> the corruption be coming from?
:
:This has nothing to do with DOS. In case you didn't get my other hint:
:{"/home/green"}$ dd if=/dev/zero count=1 2>/dev/null | file -
:standard input: MS Windows COFF Unknown CPU
Ah. In that case, next time it happens you need to make a copy of
the broken file and a copy of the good file and save them, so we
can look at the hexdumps.
If 'cp' does not copy the corrupted file, try using 'cat' to copy
it. 'cp' uses mmap. 'cat' does not.
There are still a few minor issues when mmap()ing NFS files, but
none that ought to effect the beginning of the file. We'll have
to figure out a way to reproduce the problem to really track it
down.
-Matt
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