On Sun, Sep 30, 2012 at 2:55 PM, Andrey Korolyov <andrey@xxxxxxx> wrote: > Short post mortem - EX3200/12.1R2.9 may begin to drop packets (seems > to appear more likely on 0.51 traffic patterns, which is very strange > for L2 switching) when a bunch of the 802.3ad pairs, sixteen in my > case, exposed to extremely high load - database benchmark over 700+ > rbd-backed VMs and cluster rebalance at same time. It explains > post-reboot lockups in igb driver and all types of lockups above. I > would very appreciate any suggestions of switch models which do not > expose such behavior in simultaneous conditions both off-list and in > this thread. I don't see how a switch dropping packets would give an ethernet card driver any excuse to crash, but I'm simultaneously happy to hear that it doesn't seem like Ceph is at fault, and sorry for your troubles. I don't have an up to date 1GbE card recommendation to share, but I would recommend making sure you're using a recent Linux kernel. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
