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 <goswin-v-b@xxxxxx> wrote: > Greg Freemyer <greg.freemyer@xxxxxxxxx> writes: > >> ==> 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. The array then >> looks at the drives it has available and puts together the necessary >> pieces. As drives are added, removed it moves the data around under >> 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. Admittedly it may come at a cost >> of not being able to specify raid levels with the specificity that >> mdraid currently allows. >> >> ==> >> >> The reason I ask if this is the goal is that doing so may factor into >> 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 > Goswin > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
