From 906e087d6c57d4c1f24ecb60f98a6c98f75881a7 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Thu, 20 May 2021 09:10:20 +0100
Subject: [PATCH] v2v: Increase Linux minimum root filesystem to 100 MB

Ming Xie created a RHEL 8.3 guest which required around 70 MB free in
order to recreate the initramfs (temporary space used by the pigz
step).  Increase the minimum space required to 100 MB, the same as for
Windows.

Seealso commit dfcf60c916a986a352938b432231a36558a3bc05.

Reported-by: Ming Xie
Fixes: https://bugzilla.redhat.com/1764569#c16
(cherry picked from commit e82ff27c3bea5ce2cc3b7d1ce8d775989fc7e5a5)
---
 docs/virt-v2v.pod |  2 +-
 v2v/v2v.ml        | 12 +++++-------
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/docs/virt-v2v.pod b/docs/virt-v2v.pod
index 4016c724..4ecce369 100644
--- a/docs/virt-v2v.pod
+++ b/docs/virt-v2v.pod
@@ -1290,7 +1290,7 @@ to perform the conversion.  Currently it checks:
 
 =item Linux root filesystem
 
-Minimum free space: 20 MB
+Minimum free space: 100 MB
 
 =item Linux F</boot>
 
diff --git a/v2v/v2v.ml b/v2v/v2v.ml
index bde51885..8af86687 100644
--- a/v2v/v2v.ml
+++ b/v2v/v2v.ml
@@ -389,14 +389,12 @@ and check_guest_free_space inspect mpstats =
      * typical size of 20-30MB.  Hence:
      *)
     | "/boot" | "/" when not has_boot && not is_windows -> 50
-    (* We may install some packages, and they would usually go
-     * on the root filesystem.
+    (* Both Linux and Windows require installation of files,
+     * device drivers and guest agents.
+     * https://bugzilla.redhat.com/1949147
+     * https://bugzilla.redhat.com/1764569#c16
      *)
-    | "/" when not is_windows -> 20
-    (* Windows requires copying in many device drivers and possibly
-     * guest agents, so we need more space.  (RHBZ#1949147).
-     *)
-    | "/" (* when is_windows *) -> 100
+    | "/" -> 100
     (* For everything else, just make sure there is some free space. *)
     | _ -> 10
   in
-- 
2.27.0