libnvmf\_context\_set\_io\_queues(9) libnvme API manual libnvmf\_context\_set\_io\_queues(9)

# [NAME](#NAME)

libnvmf\_context\_set\_io\_queues - Set I/O queue topology for context

# [SYNOPSIS](#SYNOPSIS)

**int libnvmf\_context\_set\_io\_queues** **(struct libnvmf\_context \*fctx ,** **int nr\_io\_queues ,** **int nr\_write\_queues ,** **int nr\_poll\_queues ,** **int queue\_size ,** **bool disable\_sqflow );**

# [ARGUMENTS](#ARGUMENTS)

[fctx](#fctx)

Fabrics context

[nr\_io\_queues](#nr_io_queues)

Number of I/O queues

[nr\_write\_queues](#nr_write_queues)

Number of write-only queues

[nr\_poll\_queues](#nr_poll_queues)

Number of polling queues

[queue\_size](#queue_size)

Number of entries per I/O queue (SQSIZE in Connect command)

[disable\_sqflow](#disable_sqflow)

Disable SQ flow control negotiation

# [DESCRIPTION](#DESCRIPTION)

Convenience setter for the five parameters that together define the I/O queue structure used when establishing a controller connection. All five feed directly into the Connect command at queue creation time. *nr\_write\_queues* and *nr\_poll\_queues* are additive: total I/O queues is *nr\_io\_queues* + *nr\_write\_queues* + *nr\_poll\_queues*.

Individual **libnvmf\_context\_set\_nr\_io\_queues**, **\_set\_nr\_write\_queues**, **\_set\_nr\_poll\_queues**, **\_set\_queue\_size**, and **\_set\_disable\_sqflow** accessors are also available when only a subset needs to change.

# [RETURN](#RETURN)

0 on success, negative error code otherwise.

libnvmf\_context\_set\_io\_queues September 2026

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Document: libnvmf_context_set_io_queues-libnvme3(2) from nvme-cli 3.1-r1 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli