> My best idea about this was to store the whole thing on a single
> filesystem, and use hard links to generate "views" onto the dataset for
> each user.
>> The plus side is that setting up a view takes a few seconds at most
> (compared to thousands of seconds for 100-500GB).
>> The downside is that the whole thing would need to be on a single
> filesystem, rather than the usual bolt-on-a-few-more-mount-points
Is LVM able to handle a volume that size? If so, you just
bolt-on-a-few-more-partitions into your volume group and
resize2fs/ext2online/whatever. One filesystem, multiple spindles.
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