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doc/nvme_multipath: Suggest transport_ack_timeout for fast error detection

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Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: Icbdac9102920c004c2b88ef371d11488208727df
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14482
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: GangCao <gang.cao@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Shuhei Matsumoto 2022-09-13 10:20:53 +09:00 committed by Tomasz Zawadzki
parent 2826ef13ce
commit a2327b080d
1 changed files with 3 additions and 0 deletions
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doc/nvme_multipath.md
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@ -47,6 +47,9 @@ If the step 3, 4, or 5 fails, the reset reverts to the step 3 and then it is ret
recovered within `ctrlr_loss_timeout_sec` seconds. If `ctrlr_loss_timeout_sec` is -1, it retries
indefinitely.
By default, error detection on a qpair is very slow for TCP and RDMA transports. For fast error
detection, a global option, `transport_ack_timeout`, is useful.
### Path Selection
Multipath mode supports two path selection policies, active-passive or active-active.