From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: unbelievably bad performance: 2.6.27.37 and raid6 Date: Mon, 2 Nov 2009 13:28:25 +1100 Message-ID: <19182.17353.763258.508113@notabene.brown> References: <200911011241.40735.tfjellstrom@shaw.ca> <200911011647.41259.tfjellstrom@shaw.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: message from Jon Nelson on Sunday November 1 Sender: linux-raid-owner@vger.kernel.org To: Jon Nelson Cc: LinuxRaid List-Id: linux-raid.ids On Sunday November 1, jnelson-linux-raid@jamponi.net wrote: > On Sun, Nov 1, 2009 at 5:47 PM, Thomas Fjellstrom wrote: > > On Sun November 1 2009, NeilBrown wrote: >=20 > >> Reshaping to a new chunksize is possible with the latest mdadm and > >> =A0kernel, but I would recommend waiting for mdadm-3.1.1 and 2.6.3= 2. > >> With the current code, a device failure during reshape followed by= an > >> unclean shutdown while reshape is happening can lead to unrecovera= ble > >> data loss. =A0Even a clean shutdown before the shape finishes in t= hat case > >> might be a problem. >=20 > Do you know if the stable series 2.6.31.XX incorporates the appropria= te fixes? They haven't been written yet..... The kernel change is very small I think so it will go in to -stable. But I want to write the mdadm changes first (which are bigger) and be sure I don't need any other kernel changes. NeilBrown -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html