From 1ae6bae552ca7973f48645f0502a12d158684c4e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Sun, 29 Jun 2025 23:32:33 +0200
Subject: [PATCH] lvm: suppress logs on stdout when expecting json output

Apparently lvm sometimes logs messages to stdout (instead of stderr),
which messes up json format. Disable those messages by passing --quiet
option.

Fixes QubesOS/qubes-issues#10023
---
 qubes/storage/lvm.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/qubes/storage/lvm.py b/qubes/storage/lvm.py
index d0b4a0cef..4e80492ca 100644
--- a/qubes/storage/lvm.py
+++ b/qubes/storage/lvm.py
@@ -234,6 +234,7 @@ def usage_details(self):
 _init_cache_cmd = [
     _lvm,
     "lvs",
+    "--quiet",
     "--noheadings",
     "-o",
     "vg_name,pool_lv,name,lv_size,data_percent,lv_attr,origin,lv_metadata_size,"