79 lines
2.4 KiB
Diff
79 lines
2.4 KiB
Diff
From 21c860888425762468d339950518ab8b0940ecea Mon Sep 17 00:00:00 2001
|
|
From: Tyrel Datwyler <tyreld@linux.ibm.com>
|
|
Date: Mon, 5 Oct 2020 13:03:45 -0700
|
|
Subject: [PATCH] ofpathname: Use NVMe controller physical nsid
|
|
|
|
Linux creates logical block devices of the the form nvmeXnYpZ such that X = the
|
|
controller, Y = namepsace, and Z = partition. For example:
|
|
|
|
/dev/nvme0n1p1
|
|
|
|
The Linux namespace numbering scheme for namespaces always starts at 1 and
|
|
increases monotonically regardless of the actual numbering scheme of the
|
|
namespaces as seen by the physical NVMe controller. Accordingly, the Open
|
|
firmware path binding utilizes the namespace id as seen by the controller and
|
|
not the necessarily the one given in the logical block device name.
|
|
|
|
As such we need to use the "nsid" attribute in the sysfs entry for the logical
|
|
device to properly map back and forth from OP pathnames.
|
|
|
|
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
|
|
---
|
|
scripts/ofpathname | 24 ++++++++++++++++--------
|
|
1 file changed, 16 insertions(+), 8 deletions(-)
|
|
|
|
diff --git a/scripts/ofpathname b/scripts/ofpathname
|
|
index 2ceae25..41b8c5c 100755
|
|
--- a/scripts/ofpathname
|
|
+++ b/scripts/ofpathname
|
|
@@ -659,6 +659,11 @@ l2of_nvme()
|
|
devspec=`$CAT $PWD/device/devspec | tr -d '\000'`
|
|
if [[ -n $devspec ]]; then
|
|
found=1
|
|
+ if [[ -n $devnsid ]]; then
|
|
+ # Linux logical nsid might not match nvme controller nsid
|
|
+ goto_dir $dir "nsid"
|
|
+ devnsid=`$CAT $PWD/nsid | tr -d '\000'`
|
|
+ fi
|
|
break
|
|
fi
|
|
done
|
|
@@ -1609,16 +1614,9 @@ of2l_nvme()
|
|
local dir
|
|
local link
|
|
|
|
- for dir in `$FIND /sys/block -name "nvme*n$nsid"`; do
|
|
+ for dir in `$FIND /sys/class/nvme -name "nvme[0-9]*"`; do
|
|
cd $dir
|
|
|
|
- link=`get_link "device"` # points to nvme[0-9]+ (non-namespace)
|
|
- if [[ -n $link ]]; then
|
|
- cd $link
|
|
- else
|
|
- continue
|
|
- fi
|
|
-
|
|
link=`get_link "device"` # points to pci address dir
|
|
if [[ -n $link ]]; then
|
|
cd $link
|
|
@@ -1635,6 +1633,16 @@ of2l_nvme()
|
|
fi
|
|
done
|
|
|
|
+ for dir in `$FIND /sys/block -name "${LOGICAL_DEVNAME}n[0-9]*"`; do
|
|
+ cd $dir
|
|
+
|
|
+ local devnsid=`$CAT ./nsid 2>/dev/null`
|
|
+ if [[ $devnsid = $nsid ]]; then
|
|
+ LOGICAL_DEVNAME="${dir##*/}"
|
|
+ break
|
|
+ fi
|
|
+ done
|
|
+
|
|
if [[ -n $LOGICAL_DEVNAME ]] \
|
|
&& [[ -n $part ]]; then
|
|
|
|
--
|
|
1.8.3.1
|
|
|