linux-kernel - Re: [PATCH] DM-CRYPT: Scale to multiple CPUs v3 on 2.6.37-rc* ?

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]

Date:	Sun, 7 Nov 2010 21:36:37 +0100
From:	Heinz Diehl <htd@...tha.org>
To:	Matt <jackdachef@...il.com>
Cc:	Milan Broz <mbroz@...hat.com>, Andi Kleen <andi@...stfloor.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	dm-devel@...hat.com, htd@...cy-poultry.org
Subject: Re: [PATCH] DM-CRYPT: Scale to multiple CPUs v3 on 2.6.37-rc* ?

On 07.11.2010, Matt wrote: 

> noatime,nodiratime,barrier=1

One of my systems runs a squid webcache and has a lot of disk load,
and I've never seen data loss or corruption, all the way up from 2.6.34 to
the latest -git.

(Btw: "noatime" superseeds "nodiratime", you can therefore drop it when
"noatime" is set.)

> I read about barrier-problems and data getting to the partition when
> using dm-crypt and several layers so I don't know if that could be
> related

I would rather guess that you have filesystem / harddisk problems,
but I must admit I've never mounted one of my filesystems with barriers
enabled (I use XFS exclusively).

--
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/