[system/kio-snapshot] autotests: autotests: try to make them less flaky on CI part 2

Git commit 46df6e01f159253fc0f7f34f8a25c56156789140 by Bharadwaj Raju.
Committed on 14/08/2026 at 18:14.
Pushed by bharadwaj-raju into branch 'master'.

autotests: try to make them less flaky on CI part 2

M  +3    -0    autotests/prep_btrfs.sh

https://invent.kde.org/system/kio-snapshot/-/commit/46df6e01f159253fc0f7f34f8a25c56156789140

diff --git a/autotests/prep_btrfs.sh b/autotests/prep_btrfs.sh
index 8d61d68..a0b66c7 100644
--- a/autotests/prep_btrfs.sh
+++ b/autotests/prep_btrfs.sh
@@ -36,6 +36,9 @@ sudo btrfs subvolume snapshot butter-tray/sub butter-tray/@sub-after-additions
 rm butter-tray/sub/vol.txt
 sudo btrfs subvolume snapshot butter-tray/sub butter-tray/@sub-after-removal
 echo "again" > butter-tray/sub/vol.txt
+sudo btrfs filesystem sync butter-tray
+sudo btrfs filesystem sync butter-tray/sub
+sleep 1
 sudo btrfs subvolume snapshot butter-tray/sub butter-tray/@sub-after-recreation
 
 sudo btrfs filesystem sync butter-tray