From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shaochun Wang Subject: Re: RAID5 write hole? Date: Tue, 29 Jun 2010 21:28:16 +0800 Message-ID: <20100629132816.GA1705@localhost> References: <20100626143125.GA1010@localhost> <4C27290D.6000609@xs4all.nl> <20100627221613.0c34c812@notabene.brown> <20100629061634.GA20532@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Tue, Jun 29, 2010 at 08:23:35AM +0200, Mikael Abrahamsson wrote: > On Tue, 29 Jun 2010, Shaochun Wang wrote: > > $ cat /proc/mdstat | grep bitmap > bitmap: 0/8 pages [0KB], 131072KB chunk > > If you don't get any bitmap information in there, it's not enabled. It seems that I do not have write-intent bitmap enabled. If write-intent bitmap is useful, why is it not the default one? -- Shaochun Wang Jabber: fungusw@jabber.org