To reproduce: 0. start with a recent Everything Fedora 26 installer image (*not* Server), e.g. https://kojipkgs.fedoraproject.org/compose/26/Fedora-26-20170630.0/compose/Everything/x86_64/iso/Fedora-Everything-netinst-x86_64-26-1.1.iso ) , use a VM with 2GiB of RAM and a ~10GiB hard disk 1. Go to INSTALLATION DESTINATION 2. Select a disk and select custom partitioning 3. In custom partitioning, remove any existing volumes so the disk is empty 4. Change the drop-down to 'Btrfs' 5. Click the 'create them automatically' text (a 2GiB swap partition will be created) 6. Click 'Done' For me, this reliably results in an orange warning bar. When you click 'Click for details', it shows: Your swap space is less than 2.08 GiB which is lower than recommended. Of course, the automatic partitioning code and the 'is this swap big enough' code shouldn't disagree... Note, this doesn't happen with Server (I think because it specifies different rules for swap partition size), and it doesn't happen with LVM or 'standard partition' volume types, only Btrfs.
Fixed in a pull request: https://github.com/rhinstaller/anaconda/pull/1232
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