From: Fiona Ebner <f.ebner@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [PATCH docs 1/3] close #7204: storage: lvm thin: document that thin pools must have zeroing enabled
Date: Thu, 5 Feb 2026 17:38:04 +0100 [thread overview]
Message-ID: <20260205163819.219322-2-f.ebner@proxmox.com> (raw)
In-Reply-To: <20260205163819.219322-1-f.ebner@proxmox.com>
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
pve-storage-lvmthin.adoc | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/pve-storage-lvmthin.adoc b/pve-storage-lvmthin.adoc
index 83f65a3..48505a9 100644
--- a/pve-storage-lvmthin.adoc
+++ b/pve-storage-lvmthin.adoc
@@ -23,6 +23,11 @@ lvcreate -L 100G -n data pve
lvconvert --type thin-pool pve/data
----
+WARNING: The `zero` property for the thin pool must be set or certain operations
+for VM images may lead to data corruption! The property is controlled via the
+`allocation/thin_pool_zero` LVM configuration option and is enabled by default.
+Check with `lvs pve/data -o lv_name,zero` which should indicate `zero` in the
+output below the `Zero` heading.
Configuration
~~~~~~~~~~~~~
--
2.47.3
next prev parent reply other threads:[~2026-02-05 16:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-05 16:38 [PATCH-SERIES docs/storage 0/3] close #7204: document and check that thin pools " Fiona Ebner
2026-02-05 16:38 ` Fiona Ebner [this message]
2026-02-05 16:38 ` [RFC storage 2/3] lvm plugin: list volumes: also query 'zero' property Fiona Ebner
2026-02-05 16:38 ` [RFC storage 3/3] close #7204: lvm thin plugin: die if thin pool does not have zeroing configured Fiona Ebner
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