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Re: sparse file check failed

From: Paul Eggert
Subject: Re: sparse file check failed
Date: Wed, 06 Dec 2006 01:12:50 -0800
User-agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.4 (gnu/linux)

"John T. Rose" <address@hidden> writes:

> + dd bs=1 seek=131073 of=sparse
> + cp --sparse=always sparse copy

Thanks for reporting this.
What kind of file system are you writing to?

If you execute the following shell commands:

  rm sparse
  dd bs=1 seek=131073 of=sparse
  strace -o tr cp --sparse=always sparse copy

what are the last few system calls (in the file 'tr')?  It'd be nice
to see the pattern, so that we can know what actually failed.

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