From: Karel Zak <kzak@redhat.com>
Date: Thu, 1 Mar 2018 11:35:59 +0000 (+0100)
Subject: docs: add note about NVMe-multipath to TODO
X-Git-Tag: v2.32-rc2~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56f4d6ce0d6fe45dabfc6b6094adffaa98044e78;p=thirdparty%2Futil-linux.git

docs: add note about NVMe-multipath to TODO

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/Documentation/TODO b/Documentation/TODO
index 7b61ce72ac..6dc1c4fcf0 100644
--- a/Documentation/TODO
+++ b/Documentation/TODO
@@ -1,6 +1,24 @@
 
  Note that items with (!) have high priority.
 
+lsblk
+-----
+   The problem is NVMe-multipath driver where in /sys/.../slaves/ are nodes
+   that should be probably hidden for userspace. Note that kernel developers
+   promised to fix this issue in kernel *** so hold off from that for now***
+   [Mar 1, 2018].
+
+   Anyway, possible userspace solution is:
+
+   - verify that slave/holder nodes points to the real block devices
+     (/sys/dev/block/<maj:min> for the node exists), otherwise silently ignore
+     the slave/holder node -- see set_cxt().
+
+   - the same verification we necessary for nodes in /sys/block/<name>. It means
+     verify result from sysfs_devname_to_devno() in set_cxt().
+
+
+
 cleanup lib/path.c: [Karel Zak for v2.33]
 ------------------
    - always return rc from all functions