Re: [RFC] LVM/RAID/FS integration

2007-07-09 Thread Phillip Susi
Kent Overstreet wrote: The trouble is it's completely impractical with current tools; we need tighter integration between md and LVM. Basically, we need a new type of VG; you'd only be able to make it out of PVs that are the same size (or close). Then, when you create an LV you decide what kind o

Re: [RFC] LVM/RAID/FS integration

2007-06-29 Thread Andi Kleen
"Kent Overstreet" <[EMAIL PROTECTED]> writes: > > Basically, the order we want is fs -> raid -> lvm. Given a set of > identical drives, we want LVM to handle them separately and divide > them up into LVs identically; then corresponding LVs are raided > together. We might have a raid5 volume and a

[RFC] LVM/RAID/FS integration

2007-06-27 Thread Kent Overstreet
I believe I have the right way of going about it. I agree with the kernel developers who've stated that ZFS is a layering violation, and we can do better. Consider a filesystem on a set of drives; it may want some data to be in a raid5 and some to be mirrored. The correct interface for the filesy