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Date:      Sat, 12 Oct 2013 19:29:47 +0200
From:      =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To:        Devin Teske <dteske@freebsd.org>
Cc:        Adrian Chadd <adrian@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "Teske, Devin" <Devin.Teske@fisglobal.com>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, Mark Murray <markm@freebsd.org>
Subject:   Re: svn commit: r256377 - in head: etc/defaults etc/rc.d share/examples/kld/random_adaptor share/man/man4 sys/boot/forth sys/conf sys/dev/glxsb sys/dev/hifn sys/dev/random sys/dev/rndtest sys/dev/safe ...
Message-ID:  <86r4bqs8hg.fsf@nine.des.no>
In-Reply-To: <13CA24D6AB415D428143D44749F57D720FC5BE74@LTCFISWMSGMB21.FNFIS.com> (Devin Teske's message of "Sat, 12 Oct 2013 16:35:39 %2B0000")
References:  <201310121257.r9CCvvjO006546@svn.freebsd.org> <CAJ-VmomMvW3k%2BD-t29nb9JByrE_rt7yXEyBnKzvN3KnhXjdXVw@mail.gmail.com> <13CA24D6AB415D428143D44749F57D720FC5BE74@LTCFISWMSGMB21.FNFIS.com>

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"Teske, Devin" <Devin.Teske@fisglobal.com> writes:
> Can you maybe test with ZFS + Geli? I'm concerned because we told it
> to use random(4) instead of urandom(4). I hope there's enough entropy
> when creating the geli stuff that said process doesn't hang.

/dev/urandom is a symlink to /dev/random.  Neither will block, because
we explicitly mark /dev/random as seeded with a SYSINIT late in the boot
(not as late as I'd like, but not too early either).

> I think DES's patch will help there too (not that anyone testing our
> ZFS patches reported any hangs... including when testing GELI -- this
> was before DES's patch).

If you mean the device attach entropy gathering, that was a case of
parallel invention from Pawel and myself, where I ended up using Pawel's
patch with minor modifications.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no



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