Account for unusable space in the PV in LVMFactory

Resolves: RHEL-45174

0005-Account-for-unusable-space-in-the-PV-in-LVMFactory.patch

@@ -0,0 +1,28 @@
+From 342802d2575a51b71560849d1f638b7d898f3398 Mon Sep 17 00:00:00 2001
+From: Vojtech Trefny <vtrefny@redhat.com>
+Date: Wed, 28 Jan 2026 09:35:36 +0100
+Subject: [PATCH] Account for unusable space in the PV in LVMFactory
+
+When calculating the amount of space needed in the factory, we
+need to take PV metadata and alignment in account to make sure
+the VG has enough free space for the LV which is being created.
+
+Resolves: RHEL-45174
+---
+ blivet/devicefactory.py | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/blivet/devicefactory.py b/blivet/devicefactory.py
+index e02f6c4f8..43a9c0eb6 100644
+--- a/blivet/devicefactory.py
++++ b/blivet/devicefactory.py
+@@ -1442,6 +1442,9 @@ def _get_total_space(self):
+                 space -= self.vg.free_space
+                 # we need to account for the LVM metadata being placed somewhere
+                 space += self.vg.lvm_metadata_space
++                # account for unusable space in the PV (difference between PV size and its usable
++                # space), this is dues to PV metadata and data alignment to
++                space += sum(pv.size - self.vg._get_pv_usable_space(pv) for pv in self.vg.parents)
+             else:
+                 # we need to account for the LVM metadata being placed on each disk
+                 # (and thus taking up to one extent from each disk)

python-blivet.spec

@@ -5,7 +5,7 @@ Version: 3.13.0
 
 #%%global prerelease .b2
 # prerelease, if defined, should be something like .a1, .b1, .b2.dev1, or .c2
-Release: 5%{?prerelease}%{?dist}
+Release: 6%{?prerelease}%{?dist}
 Epoch: 1
 License: LGPL-2.1-or-later
 %global realname blivet
@@ -20,6 +20,7 @@ Patch0: 0001-remove-btrfs-plugin.patch
 Patch2: 0002-iSCSI-dont-crash-when-LUN-ID-256.patch
 Patch3: 0003-Fix-luks-save_passphrase-for-missing-format-context.patch
 Patch4: 0004-Fix-getting-iSCSI-firmware-initiator-name.patch
+Patch5: 0005-Account-for-unusable-space-in-the-PV-in-LVMFactory.patch
 
 # Versions of required components (done so we make sure the buildrequires
 # match the requires versions of things).
@@ -117,6 +118,10 @@ make DESTDIR=%{buildroot} install
 %{python3_sitelib}/*
 
 %changelog
+* Thu Apr 16 2026 Vojtech Trefny <vtrefny@redhat.com> - 3.13.0-6
+- Account for unusable space in the PV in LVMFactory
+  Resolves: RHEL-45174
+
 * Wed Feb 04 2026 Vojtech Trefny <vtrefny@redhat.com> - 3.13.0-5
 - Fix getting iSCSI firmware initiator name
   Resolves: RHEL-145882