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SubjectRe: RFC - tree quotas for Linux (2.4.12, ext2)
On Wed, 24 Oct 2001, James Sutherland wrote:

> Yep, you're right: you'd need to ascend the target directory tree,
> increasing the cumulative size all the way up, then do the move and
> decrement the old location's totals in the same way. All wrapped up in a
> transaction (on journalled FSs) or have fsck rebuild the totals on a dirty
> mount. Fairly clean and painless on a JFS,

It's only clean and painless when you have infinite journal
space. When your filesystem's journal isn't big enough to
keep track of all the quota updates from an arbitrarily deep
directory tree, you're in big trouble.

Rik
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