Ubuntu 18.04 gets stuck on under heavy I/O load
I have 2 nodes which are connected to a shared storage (3Par) with FC. I have 32 virtual volumes exported to the nodes. I use volumes (formatted as ocfs2) as minio back-ends. So lots of small files will be stored in them. When I try to migrate the data from another minio into this minio, which uses FC volumes Ubuntu crashes. When I checked the results of dmesg
I saw these lines: