linux-kernel - Re: Disk access just before shutdown power off.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1158166a0907211014p41b2f5a2x2e61d3cf30e798bb@mail.gmail.com>
Date:	Tue, 21 Jul 2009 19:14:42 +0200
From:	Denys Vlasenko <vda.linux@...glemail.com>
To:	James Courtier-Dutton <James@...erbug.demon.co.uk>
Cc:	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: Disk access just before shutdown power off.

On Mon, Jul 20, 2009 at 3:34 PM, James
Courtier-Dutton<James@...erbug.demon.co.uk> wrote:
> When I shutdown my Linux laptop, it does an orderly shutdown with quite
> a lot of HD activity during shutdown which eventually stops when the
> screen goes blank. Then there is some delay (5-10 seconds) and then a
> quick flurry of HD access just before it powers itself off.

Either your BIOS does something very weird with your disk
when OS commands it to power off (unlikely),

or your system is set up in a way where there is no visible
output when X is killed, but the system (Linux) is still
running (shutting itself down).

Some distributions get fancy ideas about "not scaring users
with this text output scrolling up at boot & shutdown".

This has nice side effect of users not noticing any
potentially useful messages at boot or shutdown. :(

--
vda
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/