From: Christoph Hellwig <hch@lst.de>
To: Sagi Grimberg <sagi@grimberg.me>, Keith Busch <kbusch@kernel.org>,
Jens Axboe <axboe@kernel.dk>
Cc: Chao Leng <lengchao@huawei.com>,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org
Subject: fix nvme-tcp and nvme-rdma controller reset hangs when using multipath
Date: Mon, 22 Mar 2021 08:37:24 +0100 [thread overview]
Message-ID: <20210322073726.788347-1-hch@lst.de> (raw)
Hi all,
this series attempts to fix the nvme queue freeze deadlock Sagi reported.
It needs a little help from the block layer so that we can avoid blocking
on the queue free percpu_ref without forcing the entire NOWAIT flag and
thus also not waiting for tag allocations.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Sagi Grimberg <sagi@grimberg.me>, Keith Busch <kbusch@kernel.org>,
Jens Axboe <axboe@kernel.dk>
Cc: Chao Leng <lengchao@huawei.com>,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org
Subject: fix nvme-tcp and nvme-rdma controller reset hangs when using multipath
Date: Mon, 22 Mar 2021 08:37:24 +0100 [thread overview]
Message-ID: <20210322073726.788347-1-hch@lst.de> (raw)
Hi all,
this series attempts to fix the nvme queue freeze deadlock Sagi reported.
It needs a little help from the block layer so that we can avoid blocking
on the queue free percpu_ref without forcing the entire NOWAIT flag and
thus also not waiting for tag allocations.
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Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
next reply other threads:[~2021-03-22 7:39 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 7:37 Christoph Hellwig [this message]
2021-03-22 7:37 ` fix nvme-tcp and nvme-rdma controller reset hangs when using multipath Christoph Hellwig
2021-03-22 7:37 ` [PATCH 1/2] blk-mq: add a blk_mq_submit_bio_direct API Christoph Hellwig
2021-03-22 7:37 ` Christoph Hellwig
2021-03-22 11:23 ` Hannes Reinecke
2021-03-22 11:23 ` Hannes Reinecke
2021-03-22 15:30 ` Keith Busch
2021-03-22 15:30 ` Keith Busch
2021-03-22 7:37 ` [PATCH 2/2] nvme-multipath: don't block on blk_queue_enter of the underlying device Christoph Hellwig
2021-03-22 7:37 ` Christoph Hellwig
2021-03-22 11:22 ` Hannes Reinecke
2021-03-22 11:22 ` Hannes Reinecke
2021-03-22 15:31 ` Keith Busch
2021-03-22 15:31 ` Keith Busch
2021-03-23 2:57 ` Sagi Grimberg
2021-03-23 2:57 ` Sagi Grimberg
2021-03-23 3:23 ` Sagi Grimberg
2021-03-23 3:23 ` Sagi Grimberg
2021-03-23 7:04 ` Chao Leng
2021-03-23 7:04 ` Chao Leng
2021-03-23 7:36 ` Sagi Grimberg
2021-03-23 7:36 ` Sagi Grimberg
2021-03-23 8:13 ` Chao Leng
2021-03-23 8:13 ` Chao Leng
2021-03-23 16:17 ` Christoph Hellwig
2021-03-23 16:17 ` Christoph Hellwig
2021-03-23 16:15 ` Christoph Hellwig
2021-03-23 16:15 ` Christoph Hellwig
2021-03-23 18:13 ` Sagi Grimberg
2021-03-23 18:13 ` Sagi Grimberg
2021-03-23 18:22 ` Christoph Hellwig
2021-03-23 18:22 ` Christoph Hellwig
2021-03-23 19:00 ` Sagi Grimberg
2021-03-23 19:00 ` Sagi Grimberg
2021-03-23 19:01 ` Christoph Hellwig
2021-03-23 19:01 ` Christoph Hellwig
2021-03-23 19:10 ` Sagi Grimberg
2021-03-23 19:10 ` Sagi Grimberg
2021-03-23 7:28 ` Hannes Reinecke
2021-03-23 7:28 ` Hannes Reinecke
2021-03-23 7:31 ` Sagi Grimberg
2021-03-23 7:31 ` Sagi Grimberg
2021-03-23 8:36 ` Hannes Reinecke
2021-03-23 8:36 ` Hannes Reinecke
2021-03-23 14:53 ` Keith Busch
2021-03-23 14:53 ` Keith Busch
2021-03-23 16:19 ` Christoph Hellwig
2021-03-23 16:19 ` Christoph Hellwig
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