On Monday May 25, 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). Note that LVM (a suite of user-space tools) could conceivably use md/raid1, md/raid5 etc. The functionality doesn't have to go in dm. Neil > > 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
