On Fri, Apr 22, 2011 at 08:44:49AM -0700, Sage Weil wrote:
> - We can easily wrap the non-fast past with a mutex to avoid the races
> (because, again, collisions are vanishingly rare except in our test
> cases).
How do you guard against crashes, e.g. the create+set_xattr crashing
before set_xattr?
How do you guard against gaps in the sequence number thing? (Perhaps
make that part a random string, and change consumers to listdir
instead of probing 1,2,3...)
How do you convince yourself you've covered all the races?
> - For simplicity, I still think the simplest thing will be to push all the
> escaping/mangling into one layer. Once place to audit and unit test.
I think the big functional benefit with that is that you can have the
suffix not be obscured by the hash; FOO_a43fec_n_head not FOO_a43fec_n
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