From: Markus <M4rkusXXL@web.de>
To: lkml <linux-kernel@vger.kernel.org>
Subject: Re: hybrid raid1 with trim support
Date: Sun, 24 Mar 2013 10:21:05 +0100
Message-ID: <3642314.Bs77jRSGfY@f209>
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Hi!

Still the same with 3.8.4 ... anybody?

Best regards,
Markus

Markus schrieb am 12.03.2013:
> Hello!
> 
> I created a hybrid raid1 with one ssd and one hdd. Used writemostly and writebehind and put ext4 with discard enabled on it.
> This setup worked quite well for the last months (last kernel was 3.7.6). But now as I booted 3.8.2 the hdd was dropped from the raid with:
> > md/raid1:md2: Disk failure on sdb1, disabling device.
> > md/raid1:md2: Operation continuing on 1 devices.
> 
> Re-adding this drive it will try to resync but the hdd will be dropped short time after. Now I remounted the device without the discard flag and the resync and usage works as before.
> After remounting it again with discard enabled the hdd is dropped again. So I think this is the culprit as the hdd does obviously not support TRIM...
> 
> As it worked fine before, I think this is a regression? Or is this an intended change?
> 
> 
> Thanks,
> Markus
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