46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Martin Wilck <mwilck@suse.com>
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Date: Fri, 13 Nov 2020 22:34:41 +0100
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Subject: [PATCH] libmultipath: use 3rd digit as transport_id for expanders
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On SAS expanders, node id's have 3 digits. sysfs paths look like this:
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/sys/devices/pci0000:80/0000:80:02.0/0000:8b:00.0/0000:8c:09.0/0000:8f:00.0/host9/port-9:0/expander-9:0/port-9:0:13/expander-9:1/port-9:1:12/expander-9:2/port-9:2:4/end_device-9:2:4/target9:0:29/9:0:29:0/block/sdac
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In that case, we should use the last digit as transport id.
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Reviewed-by: Benjamin Marzinski <bmarzins@redhat.com>
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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---
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libmultipath/discovery.c | 13 ++++++++++---
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1 file changed, 10 insertions(+), 3 deletions(-)
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diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
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index e818585a..6d74cc07 100644
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--- a/libmultipath/discovery.c
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+++ b/libmultipath/discovery.c
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@@ -358,10 +358,17 @@ sysfs_get_tgt_nodename(struct path *pp, char *node)
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if (value) {
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tgtdev = udev_device_get_parent(parent);
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while (tgtdev) {
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+ char c;
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+
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tgtname = udev_device_get_sysname(tgtdev);
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- if (tgtname && sscanf(tgtname, "end_device-%d:%d",
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- &host, &tgtid) == 2)
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- break;
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+ if (tgtname) {
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+ if (sscanf(tgtname, "end_device-%d:%d:%d%c",
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+ &host, &channel, &tgtid, &c) == 3)
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+ break;
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+ if (sscanf(tgtname, "end_device-%d:%d%c",
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+ &host, &tgtid, &c) == 2)
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+ break;
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+ }
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tgtdev = udev_device_get_parent(tgtdev);
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tgtid = -1;
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}
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--
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2.17.2
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