Ceph question

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Hi there.

  Quick question - I was looking at the code to understand the CRUSH
placement based on unique bijection based on the prime number
generation - I looked at the code and could not locate the specific
code where we generate p > m as described in the papers.
bucket_perm_choose seems to be use "jenkins" hash function to choose a
permutation that is different from the paper ? Would the code still
generate a unique bijection from set {1....m} -> some permutation of
the same set to garauntee that the replica is not placed on the same
sub-cluster devices

Am I missing something here? Kindly help me understand.

Regards
Harmeek
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