On 10/12/2012 03:58 AM, Vivek Goyal wrote:
> On Thu, Oct 11, 2012 at 10:16:01AM +0200, Harald Hoyer wrote:
>> Hmm, wouldn't that mean, that the generator is seeded with the _same_ seed on
>> every reboot?
>> How is this different from booting with no seed at all?
>
> Atleast it can help with kdump where we might regenerate the initramfs
> upon user config change and capture the new seed.
>
> Also kdump does not happen often on the machine. So I guess for once in
> a while operation it is still better to use random-seed then not using
> anything at all.
For normal boot case, I think something like
systemd-random-seed-load.service is fine because rootfs is always
mounted in initramfs. But I'm not sure how to handle the mount issue if
/var/lib if mounted to another partition.
Or simply add below to pre-pivot hook:
if [ -f /proc/vmcore ]; then
cat /var/lib/random-seed > /dev/urandom
else
if [ -f /sysroot/var/lib/random-seed ]; then
cat /sysroot/var/lib/random-seed > /dev/urandom
fi
fi
Harald, what do you think?
>
> Thanks
> Vivek
--
Thanks
Dave
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