Re: [PATCH 3/5] nvme-rdma: Make sure to shutdown the controller if we can
From: Sagi Grimberg <hidden>
Date: 2016-08-02 06:19:56
Also in:
linux-nvme
From: Sagi Grimberg <hidden>
Date: 2016-08-02 06:19:56
Also in:
linux-nvme
quoted
quoted
quoted
- if (ctrl->ctrl.state == NVME_CTRL_LIVE) + if (test_bit(NVME_RDMA_Q_CONNECTED, &ctrl->queues[0].flags)) nvme_shutdown_ctrl(&ctrl->ctrl); blk_mq_stop_hw_queues(ctrl->ctrl.admin_q);Maybe the right way to handle this is to unconditionally call nvme_shutdown_ctrl and make sure we return an early error on the register write?As I wrote on patch 2/5 reply, I'd like to avoid depending on queue_rq to fail early peeking at the ctrl state. This dependency can grow in the future and I think we should at least try not to go there...I don't want ->queue_rq to peek at controller state. What I had in mind was copying the PCIe behavior of failing early in the timeout handler if we are in the reset handler, which will mean blk_execute_rq will return ASAP with an error.
Do we want the unnecessary ADMIN_TIMEOUT for sending a shutdown on a queue we know is not connected? I'm worried it will have scale issues... -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html