Messages in this thread | | | Date | Mon, 2 Nov 1998 20:18:03 -0600 (CST) | From | Shawn Leas <> | Subject | Re: Volume Managers in Linux |
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On Tue, 3 Nov 1998, MOLNAR Ingo wrote:
> > On Mon, 2 Nov 1998, Shawn Leas wrote: > > > Because LVM is basically at it's core a physical -> logical address > > remapping mechanism, RAID, mirroring, and all the goodies fit REAL > > nice in userland. > > ugh ... RAID in user-land? Have you thought about the performance > implications yet? How do you implement features like 'idle IO bandwith > utilization' in user-space (it's part of the kernel-space RAID driver)? > How do you boot from such a device? What do you do if the user-space RAID > code happens to page-in itself from ... a RAID-device? User-space RAID is, > believe me, unbelievably more complex (thus slower) than kernel-space > RAID. Frankly, i can see no good reason to put RAID into user-space, only > (unnecessary) problems. > -- mingo
All correct. Not having RAID in LVM doesn't negate the benefits of having LVM. You are very correct though.
-Shawn <=========== America Held Hostage ===========> Day 2112 for the poor and the middle class. Day 2131 for the rich and the dead. 810 days remaining in the Raw Deal. <============================================>
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