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Re: coreutils-8.31.90-cc4c.tar.xz on GNU/Hurd


From: Bruno Haible
Subject: Re: coreutils-8.31.90-cc4c.tar.xz on GNU/Hurd
Date: Mon, 02 Mar 2020 00:38:39 +0100
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[Thread starts at 
https://lists.gnu.org/archive/html/coreutils/2020-03/msg00008.html]
> Remains to be seen why 'dd' hangs...

When I debug the command

  dd bs=1 seek=8G of=big < /dev/null

I find that it is looping here:

skip at dd.c:1923..1946
dd_copy at dd.c:2190
main at dd.c:2552

and each loop round takes ca. 0.00055 seconds under gdb. At this speed, it
will take more than 14971 years to read and write the 2^33 bytes one by one.
No wonder that I did not see it terminate when I waited only a couple of 
hours...

Bruno




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