On Tue, 2018-04-10 at 09:15 +0200, Jaco Kroon wrote: > I've not seen additional feedback on this (I may simply not be CCed). > > I've applied the patch to one of our hosts where we've had endless IO > lockups (with MQ enabled the host died within a day or two, sometimes > sub one hour, without it typically ran for about two weeks). With this > patch (on top of 4.16) we're now at four days and 17 hours, with IO > still going strong (including a mdadm reshape to add a disk, as well as > a rebuild on a drive that failed - concurrently on two different arrays, > same controller). Very subjective, but the host also feels more > responsive under heavy IO load. > > What can I do from my side (I've got some development experience) to > help push this patch forward? Hello Jaco, If you want to follow mpt3sas development please consider to subscribe to the linux-scsi mailing list. Recently Broadcom posted a new mpt3sas patch series. See also https://www.mail-archive.com/linux-scsi@xxxxxxxxxxxxxxx/msg72823.html. Bart.