From mboxrd@z Thu Jan 1 00:00:00 1970 From: Raz Subject: Re: Subject: [001/002 ] raid0 reshape Date: Mon, 25 May 2009 23:06:04 +0300 Message-ID: <5d96567b0905251306v4b1b2ef5p9268063ad81eacd8@mail.gmail.com> References: <1241300764.5607.36.camel@raz> <18965.16276.485692.812516@notabene.brown> <87f94c370905211220n4e686a30ke452a56a2690d22b@mail.gmail.com> <87r5ydqsrd.fsf@frosties.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <87r5ydqsrd.fsf@frosties.localdomain> Sender: linux-raid-owner@vger.kernel.org To: Goswin von Brederlow Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids It is not clear to me why Linux has both LVM and md,waste of development effort to my opinion. Adding to that brtfs/zfs reaching mainline, Linux will have 3-4 volume managers to maintain. why not join hands and come up with a single unify system? On Mon, May 25, 2009 at 3:19 PM, Goswin von Brederlow wrote: > Greg Freemyer writes: > >> =3D=3D> What I mean by raid equivalent levels >> >> More and more arrays allow the user to simply say "give me a 100 GB >> logical volume with Raid 5 equivalent protection. =A0The array then >> looks at the drives it has available and puts together the necessary >> pieces. =A0As drives are added, removed it moves the data around und= er >> its own control, but maintains the raid equivalent protection. >> >> Especially when working with dozens of drives and lots of logical >> volumes it makes life much easier. =A0Admittedly it may come at a co= st >> of not being able to specify raid levels with the specificity that >> mdraid currently allows. >> >> =3D=3D> >> >> The reason I ask if this is the goal is that doing so may factor int= o >> decisions about how reshaping is implemented. >> >> Greg > > That really seems to scream for LVM to support more raid levels. It > already has linear, raid0 and raid1 support (although I have no idea > how device mapper raid1 compares to md raid1). > > Those should be fleshed out more and also support raid 4/5/6 for what > you ask. > > MfG > =A0 =A0 =A0 =A0Goswin > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =A0http://vger.kernel.org/majordomo-info.html > -- 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