On Mon, 2017-01-02 at 07:00 -0500, DAVID S wrote: > Also, Bart, you mentioned FCoE in your reply to Scott, but I believe > he is probably using straight FC. This issue appears to only be a > problem with hypervisors utilizing FC targets, so this seems to > further cement the original hypothesis that the issue is the way that > targetcli handles VAAI/ODX. This also seems to confirm that the issue > isn't with a specific hypervisor, since the original problems reported > by me and a few others were with ESXi, and Scott's hosts are Hyper-V. > > Again, please let me know if I can assist in testing new patches, etc. Hello David, Does this mean that both Scott and you are using the tcm_qla2xxx driver at the target side? Since you are suspecting VAAI/ODX, have you already tried to configure the ESXi initiator such that it does not use VAAI? I'm not proposing this as a permanent solution but as an approach to narrow down what code at the target side is causing the misbehavior. Next time you run into a lockup at the target side, can you run echo w > /proc/sysrq-trigger and provide the data that has been added to the system log by running that command? Bart.��.n��������+%������w��{.n����j�����{ay�ʇڙ���f���h������_�(�階�ݢj"��������G����?���&��