mbuf_jumbo_9k & iSCSI failing

[Ben RUBSON]

> On 26 Jun 2017, at 15:13, Andrey V. Elsukov <bu7cher at yandex.ru> wrote:
> 
> I think it is not mlxen specific problem, we have the same symptoms with
> ixgbe(4) driver too. To avoid the problem we have patches that are
> disable using of 9k mbufs, and instead only use 4k mbufs.

Another workaround is to decrease the MTU until 9K mbufs are not more used.
On my systems it gives a 4072 bytes MTU.
It solved the issue without having to reboot.
Of course it's just a workaround, as decreasing MTU increases overhead...