From: Stoiko Ivanov <s.ivanov@proxmox.com>
Date: Thu, 22 Jun 2023 13:57:13 +0000 (+0200)
Subject: fix space calculation for small disks for pve product
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=120bc64902d25b96ba43dbd955990508b4032039;p=pve-installer.git

fix space calculation for small disks for pve product

The convoluted calculation logic in case the disks is 8GB leads to
datasize becoming 16EiB further down:
* after calculating and removing the rootsize from $rest, $rest becomes
  smaller than $space (which should be the minimal non-used space in the
  volume-group) - this leads to a negative value, which overflows in
  the `& ~0xFFF` opration.

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
---

diff --git a/Proxmox/Install.pm b/Proxmox/Install.pm
index 25031f8..f115fbd 100644
--- a/Proxmox/Install.pm
+++ b/Proxmox/Install.pm
@@ -425,7 +425,7 @@ sub create_lvm_volumes {
 	my $rootsize_mb;
 	if ($rest_mb < 12 * 1024) {
 	    # no point in wasting space, try to get us actually installed and align down to 4 MB
-	    $rootsize_mb = ($rest_mb - 0.1) & ~3;
+	    $rootsize_mb = ($rest_mb - 4) & ~3;
 	} elsif ($rest_mb < 48 * 1024) {
 	    my $masked = int($rest_mb / 2) & ~3; # align down to 4 MB
 	    $rootsize_mb = $masked;