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Date:      Fri, 5 Jul 2013 16:14:26 +0200
From:      Markus Gebert <>
To:        Steven Hartland <>
Cc:, "" <>
Subject:   Re: kern/179932: [ciss] ciss i/o stall problem with HP Bl Gen8 (and HP Bl Gen7 + Storage Blade)
Message-ID:  <>
In-Reply-To: <>
References:  <> <>

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Hey Steven

Thanks for your input.

On 05.07.2013, at 15:43, Steven Hartland <> =

> Might also want to get the output from "show sleepchain" for all =
> too as that will easily identify sleep lock dead locks.

Is there an easy way to do this for all threads with one command? The =
first server that crashed had 800 threads=85 If not, we should probably =
script this outside of ddb using thread ids from the alltrace output. Or =
is there a subset of threads you're particularly interested in?

> Also whats the check_disk process?

This is Nagios' check_disk plugin we use to check the filesystem usage =
on all mountpoints. It runs quite frequently, that's why multiple may be =
get started until we notice and break into the debugger.


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