After looking through the OOM trace in comment 4 - I did find that lvmetad seems to initiate the oom-killer.
lvmetad invoked oom-killer: gfp_mask=0x26000c0, order=2, oom_score_adj=0
After looking through the OOM trace in comment 4 - I did find that lvmetad seems to initiate the oom-killer.
lvmetad invoked oom-killer: gfp_mask=0x26000c0, order=2, oom_score_adj=0