From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brian Candler Subject: Re: RAID6 rebuild stuck Date: Tue, 2 Oct 2012 16:56:33 +0100 Message-ID: <20121002155633.GC30589@nsrc.org> References: <20121001112946.GB27455@nsrc.org> <20121002155642.606b2108@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20121002155642.606b2108@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: NeilBrown Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Tue, Oct 02, 2012 at 03:56:42PM +1000, NeilBrown wrote: > Lesson: always do a read test as well as a write test! And there was me thinking that drives read back data after writing it - clearly they do not :-) > Looks like a bug. md_do_sync() is still waiting for all the submitted sync > requests to complete. This suggests some sort of accounting problem, but I > cannot easily see it. > > A reboot is likely to be the only fix. Thank you. We'll take it out of service and upgrade to 12.04 at the same time. Cheers, Brian.