On Fri, May 13, 2016 at 5:02 PM, Tu Holmes <tu.holmes@xxxxxxxxx> wrote: > Hello again Cephers... As I'm learning more and breaking more things, I'm > finding more things I don't know. > > So currently, with all of the other things since I started upgrading to > Jewel, I'm seeing this in my logs. > > crush map has straw_calc_version=0 > > Now, yes, I understand the general crush map and what it does, but what is > this straw_calc_version. > > Should I change this tunable to a different version? > > Is there a potential for it to break something if I do? > > I didn't see this before the Jewel upgrade, so I'm inclined to change it, > but I want to make sure I'm not breaking something. See http://docs.ceph.com/docs/master/rados/operations/crush-map#straw-calc-version-tunable and http://docs.ceph.com/docs/master/release-notes/#adjusting-crush-maps This was initially an option in Firefly, but with Jewel we're pushing you a little harder to switch. It shouldn't break anything directly (unlike most other crush tunables, it doesn't change which clients can connect) but does have potential for data movement. -Greg _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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