From ca8fe946b9198109d7b92c5278a6bd894ebec72c Mon Sep 17 00:00:00 2001
From: Rob Norris <rob.norris@klarasystems.com>
Date: Thu, 29 Feb 2024 15:46:00 +1100
Subject: [PATCH] zio: log ZIO and ABD flags for debug

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
---
 module/zfs/zio.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/module/zfs/zio.c b/module/zfs/zio.c
index bc5a3c9b70..9e5340a41c 100644
--- a/module/zfs/zio.c
+++ b/module/zfs/zio.c
@@ -52,6 +52,7 @@
 #include <sys/abd.h>
 #include <sys/dsl_crypt.h>
 #include <cityhash.h>
+#include <zfs_pretty.h>
 
 /*
  * ==========================================================================
@@ -4608,6 +4609,18 @@ zio_ready(zio_t *zio)
 		zio->io_bp_copy = *bp;
 #endif
 
+	if (zio->io_abd) {
+		char zioflagstr[256], abdflagstr[256];
+		zfs_pretty_zio_flag_bits(zio->io_flags,
+		    zioflagstr, sizeof (zioflagstr));
+		zfs_pretty_abd_flag_bits(zio->io_abd->abd_flags,
+		    abdflagstr, sizeof (abdflagstr));
+		cmn_err(CE_NOTE, "zio_ready: zio %p type %d flags [%s];"
+		    " abd %p size %08x flags [%s]",
+		    zio, zio->io_type, zioflagstr,
+		    zio->io_abd, zio->io_abd->abd_size, abdflagstr);
+	}
+
 	if (zio->io_error != 0) {
 		zio->io_pipeline = ZIO_INTERLOCK_PIPELINE;