commit a84cd29335f4ca38ca8405c1636ee3876bb292b5
author Sam Lang <sam.lang@inktank.com> Tue Apr 09 16:49:11 2013 -0500
committer Sage Weil <sage@inktank.com> Wed May 01 21:18:49 2013 -0700
tree 953fdc6edc1ae9374f59a25c8892d2ce0d662058
parent 8b3e1a56982d0eafff0afb0ff9e87c8b944a9bdc

ceph: Use pseudo-random numbers to choose mds

We don't need to use up entropy to choose an mds,
so use prandom_u32() to get a pseudo-random number.

Also, we don't need to choose a random mds if only
one mds is available, so add special casing for the
common case.

Fixes http://tracker.ceph.com/issues/3579

Signed-off-by: Sam Lang <sam.lang@inktank.com>
Reviewed-by: Greg Farnum <greg@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>