I have not seen much commentary in my searches concerning LVM under linux with very large name spaces (single file systems), and figured I would pose the question out to the forum as I am in the planning stages here to rebuild and consolidate systems. Initially I have a couple questions regarding the underlying LVM structure and what it supports: - Are PV sizes >=16TB possible? (I am looking to add external RAID chassis which will present to the system as large (~13TB (16-drive, raid-6, + hot spare)) drive. The subsystem drive will be replaced w/ 2TB or greater models when they are available in 2010-2011 and am trying to avoid a forklift upgrade of subsystem components. - What are the limits on PE/LE's per logical volume (>200,000,000? A problem?) (I will be attaching multiple external chassis like above to several HBA's and will be using LVM striping to increase performance. So a small PE size (4MB-8MB) would be best to aid in the distribution of requests across the physical subsystems.) - Are there any references or examples of users who have created/run large (100TB - 1PB) LVM installations that are functional in the real-world? (I don't see why this would not work on paper, but theory and practice are two different things). Thanks, Steve
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