zio_resume: log when unsuspending the pool (#16485)

When reviewing logs after a failure, its useful to see where unsuspend/resume was requested. Sponsored-by: Klara, Inc. Sponsored-by: Wasabi Technology, Inc. Signed-off-by: Rob Norris <[email protected]> Reviewed-by: Alexander Motin <[email protected]> Reviewed-by: Tony Hutter <[email protected]>
openzfs · Sep 10, 2024 · 8be2f4c · 8be2f4c
1 parent 5c67820
commit 8be2f4c
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/module/zfs/zio.c b/module/zfs/zio.c
@@ -2553,7 +2553,7 @@ zio_suspend(spa_t *spa, zio_t *zio, zio_suspend_reason_t reason)
 
 	if (reason != ZIO_SUSPEND_MMP) {
 		cmn_err(CE_WARN, "Pool '%s' has encountered an uncorrectable "
-		    "I/O failure and has been suspended.\n", spa_name(spa));
+		    "I/O failure and has been suspended.", spa_name(spa));
 	}
 
 	(void) zfs_ereport_post(FM_EREPORT_ZFS_IO_FAILURE, spa, NULL,
@@ -2589,6 +2589,10 @@ zio_resume(spa_t *spa)
 	 * Reexecute all previously suspended i/o.
 	 */
 	mutex_enter(&spa->spa_suspend_lock);
+	if (spa->spa_suspended != ZIO_SUSPEND_NONE)
+		cmn_err(CE_WARN, "Pool '%s' was suspended and is being "
+		    "resumed. Failed I/O will be retried.",
+		    spa_name(spa));
 	spa->spa_suspended = ZIO_SUSPEND_NONE;
 	cv_broadcast(&spa->spa_suspend_cv);
 	pio = spa->spa_suspend_zio_root;