linux-kernel - Re: mdraid6 problem post 3.5.0

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: <CAEhu1-4A4z570g6+KdiRH4No-q=7hkDymQ+gnwnKwS0E83jUsg@mail.gmail.com>
Date:	Fri, 17 Aug 2012 18:57:44 -0400
From:	John Drescher <drescherjm@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: mdraid6 problem post 3.5.0

On Fri, Aug 17, 2012 at 6:30 PM, John Drescher <drescherjm@...il.com> wrote:
> For the last few weeks I have been doing some reliability testing on a
>  mdraid6 array. One of my test was to physically hot remove a raid
> member disk. This worked flawlessly with gentoo-sources-3.5.0 for the
> 5 or so times I tried it with my 12 disk + 1 spare mdraid6 array.
> After pulling a disk a few seconds later the array automatically
> rebuilds with a spare and after finishing all data checks out via
> btrfs a scrub. However trying this with gentoo-sources-3.5.2 or the
> latest kernel.org git sources the machine does not start the rebuild
> and any access to /proc/mdstat or and disk access that is not in cache
> for that array just leads to an a long (possibly infinite) wait
> eventually forcing me to have to use the reset button when the sysrq
> key combinations fail to shut down the machine. I do see some kernel
> debug message in the console alt-ctrl-f12 but I was unable to save
> that to copy.
>
> Is this a known problem? If not it may be possible that I could bisect
> this next week to the patch that causes this behavior.
>

The same problem appears on gentoo-sources-3.5.1 so it appears this
problem was introduced between kernels 3.5.0 and 3.5.1. I will have to
debug this next week..

John
--
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/