[PATCH RESEND v4 0/8] Handle update hardware queues and queue freeze more carefully

[Daniel Wagner]

[forgot to add the linux-nvme mailing list]

Hi,

This update version makes sure the unfreeze call is done when
recreating the queues. I was able to reproduce hanging I/Os when we go
into error recovery mode for FC and TCP [1]. Unfortunatly, I don't
have access to a RDMA setup to verify but as the code is identically
to the TCP, RDMA looks to like to suffer from the same problem.

Thanks,
Daniel

[1] https://lore.kernel.org/linux-nvme/20210730094907.5vg7qebggttibogz@xxxxxxxxxxxxx/
    https://lore.kernel.org/linux-nvme/20210730113415.wezsrvxv5cu4yz4x@xxxxxxxxxxxxx/


v1:
 - https://lore.kernel.org/linux-nvme/20210625101649.49296-1-dwagner@xxxxxxx/
v2:
 - https://lore.kernel.org/linux-nvme/20210708092755.15660-1-dwagner@xxxxxxx/
 - reviewed tags collected
 - added 'update hardware queues' for all transport
 - added fix for fc hanger in nvme_wait_freeze_timeout
v3:
 - https://lore.kernel.org/linux-nvme/20210720124353.127959-1-dwagner@xxxxxxx/
 - dropped 'nvme-fc: Freeze queues before destroying them'
 - added James' two patches
v4:
 - added 'nvme-*: Unfreeze queues on reconnect'
 - added Hannes' reviewed tags
 

Daniel Wagner (5):
  nvme-fc: Update hardware queues before using them
  nvme-rdma: Update number of hardware queues before using them
  nvme-fc: Wait with a timeout for queue to freeze
  nvme-tcp: Unfreeze queues on reconnect
  nvme-rdma: Unfreeze queues on reconnect

Hannes Reinecke (1):
  nvme-tcp: Update number of hardware queues before using them

James Smart (2):
  nvme-fc: avoid race between time out and tear down
  nvme-fc: fix controller reset hang during traffic

 drivers/nvme/host/fc.c   | 28 +++++++++++++++++++---------
 drivers/nvme/host/rdma.c | 15 ++++++++-------
 drivers/nvme/host/tcp.c  | 18 +++++++++---------
 3 files changed, 36 insertions(+), 25 deletions(-)

-- 
2.29.2