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Date: Thu, 19 Jul 2012 09:00:45 +0800
From: Liu Bo <liubo2009@cn.fujitsu.com>
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To: Marc MERLIN <marc@merlins.org>
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Subject: Re: Long btrfs hangs during suspend to RAM / BTRFS warning (device
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On 07/19/2012 02:01 AM, Marc MERLIN wrote:

> 
> Just to put a lid (maybe) on that thread, I now think that it's very
> possible my btrfs hangs when the drive was almost full (10GB remaining
> though) were due to my Crucial RealSSD C300, which has just mostly died
> yesterday after (I think) the firmware got too many problems trying to remap
> blocks (garbage collection) since I wasn't using TRIM.
> (yes, I had the latest 007 firmware on the SSD).
> 
> I don't know that the SSD caused the corruption I saw in some files and that
> went away when I dropped the latest btrfs snapshot, but at this point I'm
> pretty sure that the SSD went into emergency garbage collection mode when
> its space was running low, and in turn was causing btrfs to hang.
> 
> Sorry for the most likely false alarm (except for snapshot corruption which
> is likely btrfs related).
> 
> I'll post another message about no TRIM with dmcrypt and possible ensuing
> SSD problems.
> 
> Marc


Hi Marc,

It's ok, any user report is WELCOME. :)

thanks,
liubo