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SubjectRe: Monthly md check == hung machine; how do I debug?
Date
On Monday 04 February 2008 08:21, Robin Lee Powell wrote:
> I've got a machine with a 4 disk SATA raid10 configuration using md.
> The entire disk is loop-AES encrypted, but that shouldn't matter
> here.
>
> Once a month, Debian runs:
>
> /usr/share/mdadm/checkarray --cron --all --quiet
>
> and the machine hangs within 30 minutes of that starting.
>
> It seems that I can avoid the hang by not having "mdadm --monitor"
> running, but I'm not certain if that's the case or if I've just been
> lucky this go-round.
>
> I'm on kernel 2.6.23.1, my own compile thereof, x86_64, AMD
> Athlon(tm) 64 Processor 3700+.
>
> I've looked through all the 2.6.23 and 2.6.24 Changelogs, and I
> can't find anything that looks relevant.
>
> So, how can I (help you all) debug this?

Do you have a serial console? Does it respond to pings?

Can you try to get sysrq+T traces, and sysrq+P traces, and post
them?


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