File 0001-Remove-hardcoded-checkpoint-interval-check... of Package mdadm.openSUSE_Factory

Overview Repositories Revisions Requests Users Attributes Meta

File 0001-Remove-hardcoded-checkpoint-interval-checking.patch of Package mdadm.openSUSE_Factory

From aec3b907de48be54106600a1ecb69d1231f4801d Mon Sep 17 00:00:00 2001
From: Mateusz Kusiak <mateusz.kusiak@intel.com>
Date: Thu, 18 Jan 2024 11:30:15 +0100
Subject: [PATCH 1/5] Remove hardcoded checkpoint interval checking
Git-commit: aec3b907de48be54106600a1ecb69d1231f4801d
Patch-mainline: mdadm-4.3+
References: jsc#PED-7542

Mdmon assumes that kernel marks checkpoint every 1/16 of the volume size
and that the checkpoints are equal in size. This is not true, kernel may
mark checkpoints more frequently depending on several factors, including
sync speed. This results in checkpoints reported by mdadm --examine
falling behind the one reported by kernel.

Remove hardcoded checkpoint interval checking.

Signed-off-by: Mateusz Kusiak <mateusz.kusiak@intel.com>
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
Signed-off-by: Coly Li <colyli@suse.de>
---
 monitor.c | 22 ++++++----------------
 1 file changed, 6 insertions(+), 16 deletions(-)

diff --git a/monitor.c b/monitor.c
index 4acec67..b8d9e88 100644
--- a/monitor.c
+++ b/monitor.c
@@ -564,22 +564,10 @@ static int read_and_act(struct active_array *a, fd_set *fds)
 		}
 	}
 
-	/* Check for recovery checkpoint notifications.  We need to be a
-	 * minimum distance away from the last checkpoint to prevent
-	 * over checkpointing.  Note reshape checkpointing is handled
-	 * in the second branch.
+	/* Handle reshape checkpointing
 	 */
-	if (sync_completed > a->last_checkpoint &&
-	    sync_completed - a->last_checkpoint > a->info.component_size >> 4 &&
-	    a->curr_action > reshape) {
-		/* A (non-reshape) sync_action has reached a checkpoint.
-		 * Record the updated position in the metadata
-		 */
-		a->last_checkpoint = sync_completed;
-		a->container->ss->set_array_state(a, a->curr_state <= clean);
-	} else if ((a->curr_action == idle && a->prev_action == reshape) ||
-		   (a->curr_action == reshape &&
-		    sync_completed > a->last_checkpoint)) {
+	if ((a->curr_action == idle && a->prev_action == reshape) ||
+	    (a->curr_action == reshape && sync_completed > a->last_checkpoint)) {
 		/* Reshape has progressed or completed so we need to
 		 * update the array state - and possibly the array size
 		 */
@@ -607,8 +595,10 @@ static int read_and_act(struct active_array *a, fd_set *fds)
 		a->last_checkpoint = sync_completed;
 	}
 
-	if (sync_completed > a->last_checkpoint)
+	if (sync_completed > a->last_checkpoint) {
 		a->last_checkpoint = sync_completed;
+		a->container->ss->set_array_state(a, a->curr_state <= clean);
+	}
 
 	if (sync_completed >= a->info.component_size)
 		a->last_checkpoint = 0;
-- 
2.35.3

Places

File 0001-Remove-hardcoded-checkpoint-interval-checking.patch of Package mdadm.openSUSE_Factory

Places