Ceph

07/20/2017

10:35 AM rbd Bug #20054: librbd memory overhead when used with KVM

Any news on this or anything I can do? Sebastian Nickel

07/04/2017

08:37 AM rbd Bug #20054: librbd memory overhead when used with KVM

Please ignore the strikethrough in the previous comment...formatting got me again :-) Sebastian Nickel

08:35 AM rbd Bug #20054: librbd memory overhead when used with KVM

@Jason: I did the same test with my RBD image mapped to the hypervisor via rbd-nbd (with ceph caching enabled). When ... Sebastian Nickel

06/30/2017

06:11 AM rbd Bug #20054: librbd memory overhead when used with KVM

As I can not reproduce the high memory usage when using fio directly, I created a bug report on the qemu side ([1]). ... Sebastian Nickel

06/28/2017

08:33 AM rbd Bug #20054: librbd memory overhead when used with KVM

@Jason: I did the test again with an image without exclusive-lock and object map. I also changed iodepth to 16. I got... Sebastian Nickel

06/27/2017

08:58 AM rbd Bug #20054: librbd memory overhead when used with KVM

Sorry, again the formatting issue. Here the fio file again:... Sebastian Nickel

08:56 AM rbd Bug #20054: librbd memory overhead when used with KVM

I tried to reproduce this issue with 'fio' (no qemu in the loop) over the weekend, but I was not able to get the same... Sebastian Nickel

05/23/2017

10:47 AM rbd Bug #20054: librbd memory overhead when used with KVM

Sorry, looks like I got some formatting issues there. Here again the overhead table:... Sebastian Nickel

10:44 AM rbd Bug #20054 (Resolved): librbd memory overhead when used with KVM

Hi,
we are running a jewel ceph cluster which serves RBD volumes for our KVM
virtual machines. Recently we noticed... Sebastian Nickel