From: Leo Famulari <leo@famulari.name>
To: Brice Waegeneire <brice@waegenei.re>
Cc: 36380@debbugs.gnu.org
Subject: bug#36380: service urandom-seed takes too long on boot
Date: Sun, 22 Mar 2020 16:19:19 -0400 [thread overview]
Message-ID: <20200322201919.GC16716@jasmine.lan> (raw)
In-Reply-To: <a24b84c858011117fd9ea7129af7232c@waegenei.re>
On Sun, Mar 22, 2020 at 08:43:33AM +0000, Brice Waegeneire wrote:
> This article has been updated since then with a section[0] about a fix
> authored by Linus[1][2] and merged in Linux 5.4. The gist of it that now
> `getrandom()' will actively try to collect entropy in early boot, if it
> is missing, by using the CPU jitter. The Debian wiki is saying the same[3].
The issue here is not related to getrandom() or our kernel. I think the
bug is still relevant.
The Guix system unconditionally reads from /dev/hwrng if it exists, and
there is no reason for that to take a noticeable amount of time.
But this bug report revealed that some VPS providers have a broken
deployment that does cause delays. Who knows how they are feeding
/dev/hwrng... they would not reply to my questions.
It doesn't really matter though, the problem is ours to fix.
We need to make this read time out after a second, but in the past I
could not figure out how to do this without crashing the system (I'm not
a strong Schemer).
Help is still wanted!
next prev parent reply other threads:[~2020-03-22 20:20 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-25 18:12 bug#36380: service urandom-seed takes too long on boot Robert Vollmert
2019-06-26 9:41 ` Alex Sassmannshausen
2019-06-26 15:47 ` Leo Famulari
2019-06-26 16:02 ` Robert Vollmert
2019-06-27 19:19 ` Leo Famulari
2019-06-27 15:20 ` Ludovic Courtès
2019-06-27 19:03 ` Leo Famulari
2019-06-27 20:00 ` Ludovic Courtès
2019-06-28 6:47 ` Robert Vollmert
2019-06-28 17:24 ` Leo Famulari
2019-07-11 17:44 ` Leo Famulari
2019-07-11 21:33 ` Ludovic Courtès
2019-07-17 21:04 ` bug#36380: related article (Debian) Robert Vollmert
2020-03-22 8:43 ` bug#36380: service urandom-seed takes too long on boot Brice Waegeneire
2020-03-22 20:19 ` Leo Famulari [this message]
2020-12-27 15:00 ` Stefan
2020-12-27 23:09 ` Leo Famulari
2020-12-27 23:28 ` Stefan
2020-12-29 2:51 ` Leo Famulari
2021-02-07 15:23 ` raid5atemyhomework via Bug reports for GNU Guix
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