Silence libyang Obsolete schema node warnings in log

Fixes #1127

Signed-off-by: Joachim Wiberg <[email protected]>

Author: troglobit

doc/ChangeLog.md

@@ -3,7 +3,7 @@ Change Log
 
 All notable changes to the project are documented in this file.
 
-[v25.08.0][UNRELEASED] -
+[v25.08.0][] - 2025-09-01
 -------------------------
 
 ### Changes
@@ -17,6 +17,7 @@ All notable changes to the project are documented in this file.
 - Fix #1123: Disabling or removing a container may cause podman to hang
 - Fix #1124: Container setup with unreachable remote image spawns
   excessive `ip monitor` processes
+- Fix #1127: Silence libyang Obsolete schema node warnings in log
 
 [RPI-TOUCH]: https://www.raspberrypi.com/products/raspberry-pi-touch-display/
 
@@ -1611,7 +1612,8 @@ Supported YANG models in addition to those used by sysrepo and netopeer:
  - N/A
 
 [buildroot]:  https://buildroot.org/
-[UNRELEASED]: https://github.com/kernelkit/infix/compare/v25.06.1...HEAD
+[UNRELEASED]: https://github.com/kernelkit/infix/compare/v25.08.0...HEAD
+[v25.08.0]:   https://github.com/kernelkit/infix/compare/v25.06.1...v26.08.0
 [v25.06.0]:   https://github.com/kernelkit/infix/compare/v25.05.1...v26.06.0
 [v25.05.1]:   https://github.com/kernelkit/infix/compare/v25.05.0...v25.05.1
 [v25.05.0]:   https://github.com/kernelkit/infix/compare/v25.04.0...v25.05.0

patches/libyang/3.12.2/0001-lyd_validate_obsolete-change-log-level-warning-debug.patch

@@ -0,0 +1,63 @@
+From 4603d09f5d1bd9ca0a1d4467d30a71528c8e2df4 Mon Sep 17 00:00:00 2001
+From: Joachim Wiberg <[email protected]>
+Date: Mon, 1 Sep 2025 14:24:03 +0200
+Subject: [PATCH] lyd_validate_obsolete: change log level warning -> debug
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+Organization: Wires
+
+A library should not log directly to syslog, this is the responsibility
+of the application.  In our case sysrepo, with a knob to disable it when
+you know what you're doing or have other ways of handling deprecated and
+obsolete nodes — e.g., automatically migrating them to a new tree.
+
+Signed-off-by: Joachim Wiberg <[email protected]>
+---
+ src/log.c        | 3 +++
+ src/log.h        | 1 +
+ src/validation.c | 2 +-
+ 3 files changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/log.c b/src/log.c
+index 13da500ef..553aefe55 100644
+--- a/src/log.c
++++ b/src/log.c
+@@ -705,6 +705,9 @@ ly_log_dbg(uint32_t group, const char *format, ...)
+     case LY_LDGDEPSETS:
+         str_group = "DEPSETS";
+         break;
++    case LY_LDGSCHEMA:
++        str_group = "SCHEMA";
++        break;
+     default:
+         LOGINT(NULL);
+         return;
+diff --git a/src/log.h b/src/log.h
+index 85f2ac6d4..2bbb0b19b 100644
+--- a/src/log.h
++++ b/src/log.h
+@@ -156,6 +156,7 @@ LIBYANG_API_DECL uint32_t *ly_temp_log_options(uint32_t *opts);
+ #define LY_LDGDICT      0x01    /**< Dictionary additions and deletions. */
+ #define LY_LDGXPATH     0x02    /**< XPath parsing end evaluation. */
+ #define LY_LDGDEPSETS   0x04    /**< Dependency module sets for schema compilation. */
++#define LY_LDGSCHEMA    0x08    /**< Schema compilation and validation. */
+ 
+ /**
+  * @}
+diff --git a/src/validation.c b/src/validation.c
+index 25be0feeb..8e308c61f 100644
+--- a/src/validation.c
++++ b/src/validation.c
+@@ -1624,7 +1624,7 @@ lyd_validate_obsolete(const struct lyd_node *node)
+         if (snode->flags & LYS_STATUS_OBSLT &&
+                 (!(snode->nodetype & LYD_NODE_INNER) || lyd_child(node))) {
+             LOG_LOCSET(NULL, node);
+-            LOGWRN(snode->module->ctx, "Obsolete schema node \"%s\" instantiated in data.", snode->name);
++            LOGDBG(LY_LDGSCHEMA, snode->module->ctx, "Obsolete schema node \"%s\" instantiated in data.", snode->name);
+             LOG_LOCBACK(0, 1);
+             break;
+         }
+-- 
+2.43.0
+