Paul Eggert wrote:
Guillaume Chazarain <[EMAIL PROTECTED]> writes:
With recent linux distributions (using NPTL), dd can hang waiting on
a futex when being killed.
I'm not quite sure how to parse that, but it sounds like a problem
with some part of the system other than "dd", not with "dd" itself.
Maybe, I first thought about posting it to LKML.
When "dd" gets a signal, it closes the input and output files, printsI thought calling fprintf in a signal handler was risky, but it's not, so yes it should
some statistics, and exits. If it gets a second signal it exits
immediately. I don't offhand see why this could cause a hang that was
dd's fault.
not be dd's fault. Sorry for the noise.
It sounds like you may need to investigate this on your own host.Actually it happens on many hosts : Fedora Core[1-3] and it disappear with LD_ASSUME_KERNEL=2.4.
But if only me can see the "dd frozen"_//_/__/ loop with a recent kernel, my hopes are low :-(
You don't mention which version of "dd" you're having the problem
with. "dd --version" should tell you.
Both 5.2.1 and 5.3.0.
Thank you.
-- Guillaume
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