[dm-devel] [PATCHv2 0/4] blk-mq support for dm multipath

[Keith Busch]

On Fri, 5 Dec 2014, Mike Snitzer wrote:
> Hi Keith,
>
> I've found a few issues with your v2.  I've been working through the
> code and fixing things as I see them.  Please see this branch:
> https://git.kernel.org/cgit/linux/kernel/git/device-mapper/linux-dm.git/log/?h=dm-for-3.19-blk-mq
>
> My changes build on your v2 baseline.
>
> How much testing have you done?  It could be that my changes screwed
> something up but... I just tried simply creating a normal request-based
> DM multipath device (using non blk-mq devices) and hit this crash:

Thanks, Mike. I'll take a look at your fixes next week.

I only tested on nvme blk-mq. I don't have any SCSI devices to try,
but I _really_ need to get one if I'm serious about making this work,
so I'll find something next week as well.