From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keld =?iso-8859-1?Q?J=F8rn?= Simonsen Subject: Re: raid1 and raid 10 always writes all data to all disks? Date: Sun, 3 Feb 2008 18:13:17 +0100 Message-ID: <20080203171317.GA24820@rap.rap.dk> References: <20080202235335.GA29029@rap.rap.dk> <47A5E411.10208@tmr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: <47A5E411.10208@tmr.com> Sender: linux-raid-owner@vger.kernel.org To: Bill Davidsen Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Sun, Feb 03, 2008 at 10:56:01AM -0500, Bill Davidsen wrote: > Keld J=F8rn Simonsen wrote: > > I found a sentence in the HOWTO: > > > >"raid1 and raid 10 always writes all data to all disks" > > > >I think this is wrong for raid10. > > > >eg > > > >a raid10,f2 of 4 disks only writes to two of the disks - > >not all 4 disks. Is that true? > > =20 >=20 > I suspect that really should have read "all mirror copies," in the=20 > raid10 case. OK, I changed the text to: raid1 always writes all data to all disks. raid10 always writes all data to the number of copies that the raid hol= ds. =46or example on a raid10,f2 or raid10,o2 of 6 disks, the data will onl= y be written 2 times. Best regards Keld - 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