From mboxrd@z Thu Jan  1 00:00:00 1970
From: Harald Hoyer <harald-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH] dracut: write initramfs to temp file then move into place
Date: Fri, 22 Feb 2013 10:57:15 +0100
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To: lars-3XmpO8hA3EAAvxtiuMwx3w@public.gmane.org
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Am 21.02.2013 22:40, schrieb lars-3XmpO8hA3EAAvxtiuMwx3w@public.gmane.org:
> From: "Lars R. Damerow" <lars-3XmpO8hA3EAAvxtiuMwx3w@public.gmane.org>
> 
> We've been finding cases where multiple instances of dracut can be launched
> simultaneously, resulting in a corrupted initramfs file. This patch makes
> dracut write the initramfs to a new file, then move it into place atomically.
> ---
>  dracut.sh | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/dracut.sh b/dracut.sh
> index 31cf2a5..da96aaa 100755
> --- a/dracut.sh
> +++ b/dracut.sh
> @@ -1103,10 +1103,11 @@ fi
>  rm -f "$outfile"
>  dinfo "*** Creating image file ***"
>  if ! ( umask 077; cd "$initdir"; find . |cpio -R 0:0 -H newc -o --quiet| \
> -    $compress > "$outfile"; ); then
> -    dfatal "dracut: creation of $outfile failed"
> +    $compress > "$outfile.$$"; ); then
> +    dfatal "dracut: creation of $outfile.$$ failed"
>      exit 1
>  fi
> +mv $outfile.$$ $outfile
>  dinfo "*** Creating image file done ***"
>  
>  dinfo "Wrote $outfile:"
> 

Yes, right!
Thanks for the patch!