From: Roy Sigurd Karlsbakk <roy@karlsbakk.net>
To: Dave Cundiff <syshackmin@gmail.com>
Cc: Linux MDADM Raid <linux-raid@vger.kernel.org>
Subject: Re: Raid 5/10 discard support broken in 3.8.2
Date: Thu, 7 Mar 2013 11:02:39 +0100 (CET) [thread overview]
Message-ID: <18656028.2.1362650559146.JavaMail.root@zimbra> (raw)
In-Reply-To: <CAKHEz2a+gwCzj16s3P3UOFMezC=CFe3D2002yyNsA_E5+-Ci6Q@mail.gmail.com>
> It appears the Raid 5/10 discard support does not work in the mainline
> kernel.
>
> I've been trying to backport it to a RHEL 6 kernel without success. I
> finally managed to setup a mainline dev box and discovered it doesn't
> work on it either!
>
> I'm now testing on a stock 3.8.2 kernel. The drives I'm using are
> Samsung 840 Pro's hanging off an LSI 9211-8i. No backplane and each
> drive has a dedicated channel. No RAID on the LSI, its just an HBA.
I'm not sure if TRIM/UNMAP is supported on that controller, even in HBA mode (and with IT firmware). I've also seen scterc fail to work on that controller as well, while working with an ordinary "stupid" controller on the same disk.
Vennlige hilsener / Best regards
roy
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next prev parent reply other threads:[~2013-03-07 10:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-06 4:20 Raid 5/10 discard support broken in 3.8.2 Dave Cundiff
2013-03-07 10:02 ` Roy Sigurd Karlsbakk [this message]
2013-03-07 17:08 ` Dave Cundiff
2013-03-07 18:26 ` Roy Sigurd Karlsbakk
2013-03-09 5:26 ` Brad Campbell
2013-03-09 19:56 ` Dave Cundiff
2013-03-10 4:49 ` Brad Campbell
2013-04-09 14:14 ` Kevin Liao
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