59 lines
2.0 KiB
Diff
59 lines
2.0 KiB
Diff
From 63da3cb8a40500c889c8faa4326f81d16997a3c8 Mon Sep 17 00:00:00 2001
|
|
From: Tomas Bzatek <tbzatek@redhat.com>
|
|
Date: Mon, 27 Nov 2023 18:55:55 +0100
|
|
Subject: [PATCH] nvme: Retrieve HostNQN from a first active fabrics connection
|
|
|
|
When no /etc/hostnqn exists, look for any active NVMe over Fabrics
|
|
connections and take the values from a first one, rather than
|
|
generating new ones.
|
|
---
|
|
blivet/nvme.py | 21 +++++++++++++++++++++
|
|
1 file changed, 21 insertions(+)
|
|
|
|
diff --git a/blivet/nvme.py b/blivet/nvme.py
|
|
index 5ac41cffa..2e4686e68 100644
|
|
--- a/blivet/nvme.py
|
|
+++ b/blivet/nvme.py
|
|
@@ -18,6 +18,7 @@
|
|
#
|
|
|
|
import os
|
|
+import glob
|
|
|
|
from . import errors
|
|
|
|
@@ -54,6 +55,22 @@ def __call__(self):
|
|
def __deepcopy__(self, memo_dict): # pylint: disable=unused-argument
|
|
return self
|
|
|
|
+ def _retrieve_fabrics_hostnqn(self):
|
|
+ for d in glob.glob('/sys/class/nvme-fabrics/ctl/nvme*/'):
|
|
+ try:
|
|
+ # invalidate old values
|
|
+ self._hostnqn = None
|
|
+ self._hostid = None
|
|
+ # read from sysfs
|
|
+ with open(os.path.join(d, 'hostnqn')) as f:
|
|
+ self._hostnqn = f.readline().strip()
|
|
+ with open(os.path.join(d, 'hostid')) as f:
|
|
+ self._hostid = f.readline().strip()
|
|
+ if self._hostnqn:
|
|
+ break
|
|
+ except Exception: # pylint: disable=broad-except
|
|
+ pass
|
|
+
|
|
def startup(self):
|
|
if self.started:
|
|
return
|
|
@@ -61,6 +78,10 @@ def startup(self):
|
|
self._hostnqn = blockdev.nvme_get_host_nqn()
|
|
self._hostid = blockdev.nvme_get_host_id()
|
|
if not self._hostnqn:
|
|
+ # see if there are any active fabrics connections and take their values over
|
|
+ self._retrieve_fabrics_hostnqn()
|
|
+ if not self._hostnqn:
|
|
+ # generate new values
|
|
self._hostnqn = blockdev.nvme_generate_host_nqn()
|
|
if not self._hostnqn:
|
|
raise errors.NVMeError("Failed to generate HostNQN")
|