From: Daniel Wagner <dwagner@suse.de> To: James Smart <jsmart2021@gmail.com> Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, James Smart <james.smart@broadcom.com>, Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@fb.com>, Ming Lei <ming.lei@redhat.com>, Sagi Grimberg <sagi@grimberg.me> Subject: Re: [PATCH v2 5/5] nvme-fc: Freeze queues before destroying them Date: Fri, 9 Jul 2021 18:42:57 +0200 [thread overview] Message-ID: <20210709164257.hzbxrbgjnnooidqe@beryllium.lan> (raw) In-Reply-To: <cd630e81-68c9-c62d-de73-8b0ae33c2cfe@gmail.com> Hi James, On Fri, Jul 09, 2021 at 09:14:07AM -0700, James Smart wrote: > Thanks for the note. that definitely helped follow what is being attempted. > I also agree with Hannes that the comment from the rdma patch should also be > present to understand what's going on. Sure will do. Though this has to wait until I am back from holiday though :) > Looking at the patch - this is not done in the same place or manner as rdma. > Freezing and stoppage is prior to cancelling and that doesn't correspond > where this was added (this is after all cancellations). We also seem to be > missing a nvme_sync_io_queues() call in the sequence as well. So I believe > there's more work to be done on this patch. I'll see what I can do. Thanks! > We really need to see about a common layer for transports. So much we do is > similar. We were ok at the start, but we've drifted apart over time and the > requirements to the core layer aren't propogating to all transports. Yes, makes a lot of sense to me to sync the transports implementation a bit more. Thanks, Daniel
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From: Daniel Wagner <dwagner@suse.de> To: James Smart <jsmart2021@gmail.com> Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, James Smart <james.smart@broadcom.com>, Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@fb.com>, Ming Lei <ming.lei@redhat.com>, Sagi Grimberg <sagi@grimberg.me> Subject: Re: [PATCH v2 5/5] nvme-fc: Freeze queues before destroying them Date: Fri, 9 Jul 2021 18:42:57 +0200 [thread overview] Message-ID: <20210709164257.hzbxrbgjnnooidqe@beryllium.lan> (raw) In-Reply-To: <cd630e81-68c9-c62d-de73-8b0ae33c2cfe@gmail.com> Hi James, On Fri, Jul 09, 2021 at 09:14:07AM -0700, James Smart wrote: > Thanks for the note. that definitely helped follow what is being attempted. > I also agree with Hannes that the comment from the rdma patch should also be > present to understand what's going on. Sure will do. Though this has to wait until I am back from holiday though :) > Looking at the patch - this is not done in the same place or manner as rdma. > Freezing and stoppage is prior to cancelling and that doesn't correspond > where this was added (this is after all cancellations). We also seem to be > missing a nvme_sync_io_queues() call in the sequence as well. So I believe > there's more work to be done on this patch. I'll see what I can do. Thanks! > We really need to see about a common layer for transports. So much we do is > similar. We were ok at the start, but we've drifted apart over time and the > requirements to the core layer aren't propogating to all transports. Yes, makes a lot of sense to me to sync the transports implementation a bit more. Thanks, Daniel _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2021-07-09 16:43 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-08 9:27 [PATCH v2 0/5] Handle update hardware queues and queue freeze more carefully Daniel Wagner 2021-07-08 9:27 ` Daniel Wagner 2021-07-08 9:27 ` [PATCH v2 1/5] nvme-fc: Update hardware queues before using them Daniel Wagner 2021-07-08 9:27 ` Daniel Wagner 2021-07-08 10:08 ` Hannes Reinecke 2021-07-08 10:08 ` Hannes Reinecke 2021-07-08 9:27 ` [PATCH v2 2/5] nvme-tcp: Update number of " Daniel Wagner 2021-07-08 9:27 ` Daniel Wagner 2021-07-08 9:27 ` [PATCH v2 3/5] nvme-rdma: " Daniel Wagner 2021-07-08 9:27 ` Daniel Wagner 2021-07-08 9:27 ` [PATCH v2 4/5] nvme-fc: Wait with a timeout for queue to freeze Daniel Wagner 2021-07-08 9:27 ` Daniel Wagner 2021-07-08 10:12 ` Hannes Reinecke 2021-07-08 10:12 ` Hannes Reinecke 2021-07-08 9:27 ` [PATCH v2 5/5] nvme-fc: Freeze queues before destroying them Daniel Wagner 2021-07-08 9:27 ` Daniel Wagner 2021-07-08 10:14 ` Hannes Reinecke 2021-07-08 10:14 ` Hannes Reinecke 2021-07-09 16:14 ` James Smart 2021-07-09 16:14 ` James Smart 2021-07-09 16:42 ` Daniel Wagner [this message] 2021-07-09 16:42 ` Daniel Wagner
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