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1058c12197
- discover: Connects to a remote Discovery controller, fetches its Discovery Log Page, and enumerates the remote controllers described in the log page. The -v option can be used to display the Identify Controller data structure for the Discovery controller. This is only really useful for debugging. - connect: Connects to a remote I/O controller and establishes an association of an admin queue and a single I/O queue. The association is handed off to the in-kernel host to create a new nvmeX device. - connect-all: Connects to a Discovery controller and attempts to create an association with each I/O controller enumerated in the Discovery controller's Discovery Log Page. - reconnect: Establishes a new association with a remote I/O controller for an existing nvmeX device. This can be used to restore access to a remote I/O controller after the loss of a prior association due to a transport error, controller reboot, etc. - disconnect: Deletes one or more nvmeX devices after detaching its namespaces and terminating any active associations. The devices to delete can be identified by either a nvmeX device name or the NQN of the remote controller. - disconnect-all: Deletes all active associations with remote controllers. Reviewed by: imp Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D44715
83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2023-2024 Chelsio Communications, Inc.
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* Written by: John Baldwin <jhb@FreeBSD.org>
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*/
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#include <err.h>
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#include <libnvmf.h>
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#include <stdlib.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include "nvmecontrol.h"
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static struct options {
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const char *dev;
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} opt = {
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.dev = NULL
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};
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static const struct args args[] = {
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{ arg_string, &opt.dev, "controller-id|namespace-id|SubNQN" },
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{ arg_none, NULL, NULL },
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};
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static void
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disconnect(const struct cmd *f, int argc, char *argv[])
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{
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int error, fd;
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char *path;
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if (arg_parse(argc, argv, f))
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return;
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if (nvmf_nqn_valid(opt.dev)) {
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error = nvmf_disconnect_host(opt.dev);
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if (error != 0)
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errc(EX_IOERR, error, "failed to disconnect from %s",
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opt.dev);
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} else {
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open_dev(opt.dev, &fd, 1, 1);
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get_nsid(fd, &path, NULL);
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close(fd);
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error = nvmf_disconnect_host(path);
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if (error != 0)
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errc(EX_IOERR, error, "failed to disconnect from %s",
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path);
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}
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exit(0);
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}
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static void
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disconnect_all(const struct cmd *f __unused, int argc __unused,
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char *argv[] __unused)
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{
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int error;
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error = nvmf_disconnect_all();
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if (error != 0)
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errc(EX_IOERR, error,
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"failed to disconnect from remote controllers");
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exit(0);
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}
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static struct cmd disconnect_cmd = {
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.name = "disconnect",
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.fn = disconnect,
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.descr = "Disconnect from a fabrics controller",
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.args = args,
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};
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static struct cmd disconnect_all_cmd = {
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.name = "disconnect-all",
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.fn = disconnect_all,
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.descr = "Disconnect from all fabrics controllers",
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};
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CMD_COMMAND(disconnect_cmd);
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CMD_COMMAND(disconnect_all_cmd);
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