dbdf7ab1ce
Add 0100-libmultipath-avoid-temporarily-enabling-queueing-on-.patch
Add 0101-multipathd-Make-sure-to-disable-queueing-if-recovery.patch
* Fixes RHEL-17234 ("RHEL9 dm-multipath no_path_retry [retry number]
is
undone if paths are later lost for an open map.")
Add 0102-multipathd-remove-nopath-flushing-code-from-flush_ma.patch
Add 0103-multipathd-make-flush_map-delete-maps-like-the-multi.patch
Add 0104-multipathd-disable-queueing-when-removing-unknown-ma.patch
* Fixes RHEL-4998 ("When remove external lun from host, rescan lun
status
will cause the OS hang and no response")
Resolves: RHEL-4998
Resolves: RHEL-17234
40 lines
1.7 KiB
Diff
40 lines
1.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Benjamin Marzinski <bmarzins@redhat.com>
|
|
Date: Thu, 7 Dec 2023 11:23:18 -0500
|
|
Subject: [PATCH] multipathd: make flush_map() delete maps like the multipath
|
|
command
|
|
|
|
When the multipath command tries to delete a multipath device, it first
|
|
disables queueing and then suspends the device to force the IOs to get
|
|
flushed. Then it attempts to delete the device and any kpartx
|
|
partitions. multipathd, on the other hand, simply tries to delete the
|
|
device and kpartx partitions, without disabling queueing or suspending.
|
|
If there are no paths but there is outstanding IO, multipathd will hang
|
|
trying to delete the last kpartx device. This is because it must be the
|
|
last opener of the multipath device (multipath won't try to delete the
|
|
device if it has any openers besides the kpartx devices) and the kernel
|
|
will not allow the last opener of a block device to close until all the
|
|
outstanding IO is flushed. This hang can be avoided if multipathd calls
|
|
dm_suspend_and_flush_map() like the multipath command does, instead of
|
|
dm_flush_map().
|
|
|
|
Reviewed-by: Martin Wilck <mwilck@suse.com>
|
|
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
|
|
---
|
|
multipathd/main.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
diff --git a/multipathd/main.c b/multipathd/main.c
|
|
index 1b5f82e7..3eeca82f 100644
|
|
--- a/multipathd/main.c
|
|
+++ b/multipathd/main.c
|
|
@@ -695,7 +695,7 @@ sync_maps_state(vector mpvec)
|
|
int
|
|
flush_map(struct multipath * mpp, struct vectors * vecs)
|
|
{
|
|
- int r = dm_flush_map(mpp->alias);
|
|
+ int r = dm_suspend_and_flush_map(mpp->alias, 0);
|
|
if (r) {
|
|
condlog(0, "%s: can't flush", mpp->alias);
|
|
return r;
|