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
43 lines
1.5 KiB
Diff
43 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: Mon, 18 Dec 2023 16:30:42 -0500
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Subject: [PATCH] libmultipath: avoid temporarily enabling queueing on reload
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Instead of always enabling queueing when a map is reloaded with
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no_path_retry set to a positive number, check if the map has timed out
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in recovery mode, and only enable queueing if it has not. This saves
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multipathd from having to disable queueing on the map immediately after
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the reload.
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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---
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libmultipath/dmparser.c | 14 ++++++++++++--
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1 file changed, 12 insertions(+), 2 deletions(-)
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diff --git a/libmultipath/dmparser.c b/libmultipath/dmparser.c
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index 16377c54..1ea2d619 100644
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--- a/libmultipath/dmparser.c
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+++ b/libmultipath/dmparser.c
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@@ -61,9 +61,19 @@ int assemble_map(struct multipath *mp, char **params)
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nr_priority_groups = VECTOR_SIZE(mp->pg);
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initial_pg_nr = (nr_priority_groups ? mp->bestpg : 0);
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- if (mp->no_path_retry != NO_PATH_RETRY_UNDEF &&
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- mp->no_path_retry != NO_PATH_RETRY_FAIL) {
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+ switch (mp->no_path_retry) {
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+ case NO_PATH_RETRY_UNDEF:
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+ case NO_PATH_RETRY_FAIL:
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+ break;
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+ default:
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+ /* don't enable queueing if no_path_retry has timed out */
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+ if (mp->in_recovery && mp->retry_tick == 0 &&
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+ count_active_paths(mp) == 0)
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+ break;
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+ /* fallthrough */
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+ case NO_PATH_RETRY_QUEUE:
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add_feature(&mp->features, no_path_retry);
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+ break;
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}
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if (mp->retain_hwhandler == RETAIN_HWHANDLER_ON &&
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get_linux_version_code() < KERNEL_VERSION(4, 3, 0))
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