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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 19:22:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 19:22:29 +0000
commit068a45420f2c98887e220b45e946cc7074da550e (patch)
treec5b54e8b4b235232b057a9c534d9a16d2208463d /examples/discover-loop.py
parentInitial commit. (diff)
downloadlibnvme-068a45420f2c98887e220b45e946cc7074da550e.tar.xz
libnvme-068a45420f2c98887e220b45e946cc7074da550e.zip
Adding upstream version 1.8.upstream/1.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'examples/discover-loop.py')
-rw-r--r--examples/discover-loop.py65
1 files changed, 65 insertions, 0 deletions
diff --git a/examples/discover-loop.py b/examples/discover-loop.py
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+#!/usr/bin/python3
+# SPDX-License-Identifier: Apache-2.0
+'''
+Example script for nvme discovery
+
+Copyright (c) 2021 Hannes Reinecke, SUSE Software Solutions
+Licensed under the Apache License, Version 2.0 (the "License"); you may
+not use this file except in compliance with the License. You may obtain
+a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+License for the specific language governing permissions and limitations
+under the License.
+'''
+
+import sys
+import pprint
+from libnvme import nvme
+
+def disc_supp_str(dlp_supp_opts):
+ d = {
+ nvme.NVMF_LOG_DISC_LID_EXTDLPES: "Extended Discovery Log Page Entry Supported (EXTDLPES)",
+ nvme.NVMF_LOG_DISC_LID_PLEOS: "Port Local Entries Only Supported (PLEOS)",
+ nvme.NVMF_LOG_DISC_LID_ALLSUBES: "All NVM Subsystem Entries Supported (ALLSUBES)",
+ }
+ return [txt for msk, txt in d.items() if dlp_supp_opts & msk]
+
+r = nvme.root()
+h = nvme.host(r)
+c = nvme.ctrl(r, nvme.NVME_DISC_SUBSYS_NAME, 'loop')
+try:
+ c.connect(h)
+except Exception as e:
+ sys.exit(f'Failed to connect: {e}')
+
+print("connected to %s subsys %s" % (c.name, c.subsystem.name))
+
+slp = c.supported_log_pages()
+
+try:
+ dlp_supp_opts = slp[nvme.NVME_LOG_LID_DISCOVER] >> 16
+except (TypeError, IndexError):
+ dlp_supp_opts = 0
+
+print(f"LID {nvme.NVME_LOG_LID_DISCOVER}h (Discovery), supports: {disc_supp_str(dlp_supp_opts)}")
+
+try:
+ lsp = nvme.NVMF_LOG_DISC_LSP_PLEO if dlp_supp_opts & nvme.NVMF_LOG_DISC_LID_PLEOS else 0
+ d = c.discover(lsp=lsp)
+ print(pprint.pformat(d))
+except Exception as e:
+ sys.exit(f'Failed to discover: {e}')
+
+try:
+ c.disconnect()
+except Exception as e:
+ sys.exit(f'Failed to disconnect: {e}')
+
+c = None
+h = None
+r = None