Christian Schwamborn
2018-Feb-28 06:47 UTC
[Pkg-xen-devel] Bug#880554: Bug#880554: Bug#880554: xen domu freezes with kernel linux-image-4.9.0-4-amd64
I much appreciate the effort you all did and like the idea to ship the xen-diag tool and maybe a hint somewhere about the issues that occurred and the possible solution by raising max_nr_frames. On 27.02.2018 17:05, Hans van Kranenburg wrote:> ad 1. Christian, Valentin, can you give more specific info that can help > someone else to set up a test environment to trigger > 32 values.As this isn't my own system, but a productive system of one of my customers, I'm really reluctant to use it for invasive testing. Just for recap: The issues hit me with kernel 4.9.51-1 hardware: xeon E5-2620 v4 board supermicro X10SRi-F 32gb ecc ram two 10tb server disk two I350 network adapter (onboard) dom0: debian stretch (up to date), kernel 4.9.51-1, xen-hypervisor 4.8.1-1+deb9u3, the two network as adapter as a bond in a bridge the discs: gpt, 4 part (1M, 256M esp, 256M md mirror for boot, rest as md mirror for lvm) domu: memory: 8192, 2 vcpus uses a network interface on the bridge 16 lvm volumes as phys devices debian stretch issue with both kernel versions: 4.9.30-2+deb9u5 and 4.9.51-1 system runs mostly some smb, some web services, cal/card dav, psql, ldap, postfix, cyrus ... In my early tests before the issue was discussed here I tried linux-image-4.13.0-0.bpo.1-amd64 an the system went stable for a week. Oh and It's worth to mention that I tried thin lvm in the beginning, but I dropped that due to (write)performance and boot issues (thinpool was always inactive after boot and took about 5-10 minutes to activate after there where about 4TB of data within). currently the system is running stable with max_nr_frames=256 (I wanted to be on the save side) and kernel 4.9.65-3+deb9u2. Maybe I can try to get some values with xen-diag Valentin provided to see the current state of the system, but I'm really busy at the moment job wise and private, I hope next week gets better (had some bad luck with our water installation - much mopping).