Bug 2463653

Summary: Anaconda UnsupportedPartitioningError: Device 'BTRFS-...' with mount point '/' not found in devicetree.
Product: [Fedora] Fedora Reporter: Alexander <alexzharov92>
Component: anacondaAssignee: Martin Kolman <mkolman>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: urgent Docs Contact:
Priority: unspecified    
Version: 44CC: alpha, anaconda-maint, contact, kkoukiou, leif.ibsen, mkolman, ntrlngm, w
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
Log file: /tmp/journal.log
none
Log file: /tmp/anaconda.log
none
Log file: /tmp/storage.log
none
Log file: /tmp/program.log
none
Log file: /tmp/packaging.log
none
Log file: /tmp/anaconda-webui.log none

Description Alexander 2026-04-28 22:21:04 UTC
Installation of the system failed: Storing configuration files and kickstarts org.fedoraproject.Anaconda.Modules.Storage.UnsupportedPartitioningError: Device 'BTRFS-8c6b619c-5124-4d36-81e2-372b7395bf42' with mount point '/' not found in devicetree. This indicates a configuration issue.

---[ System & Environment Information ]---
OS: Fedora Linux 44 (KDE Plasma Desktop Edition)
Anaconda version: 44.30
Anaconda UI version: 68

Comment 1 Alexander 2026-04-28 22:21:09 UTC
Created attachment 2138521 [details]
Log file: /tmp/journal.log

Comment 2 Alexander 2026-04-28 22:21:11 UTC
Created attachment 2138522 [details]
Log file: /tmp/anaconda.log

Comment 3 Alexander 2026-04-28 22:21:13 UTC
Created attachment 2138523 [details]
Log file: /tmp/storage.log

Comment 4 Alexander 2026-04-28 22:21:15 UTC
Created attachment 2138524 [details]
Log file: /tmp/program.log

Comment 5 Alexander 2026-04-28 22:21:17 UTC
Created attachment 2138525 [details]
Log file: /tmp/packaging.log

Comment 6 Alexander 2026-04-28 22:21:19 UTC
Created attachment 2138526 [details]
Log file: /tmp/anaconda-webui.log

Comment 7 Alexander 2026-04-29 16:26:54 UTC
Due to this bug I am unable to install Fedora on my Acer laptop.

I used:
* "Fedora KDE Plasma Desktop 44" official release Live iso
* "Fedora Media Writer" USB creation tool

And there are steps to reproduce the bug using virtual machine (I used VirtualBox):

1. Attach "Fedora-KDE-Desktop-Live-44-1.7.x86_64.iso" to VM and boot
2. Create table/partitions using "KDE Partition Manager" or any other suitable tool:
   * Create GPT partition table on '/dev/sda' disk
   * fat32 - 512 MiB (for /boot/efi)
   * ext4 - 2 GiB (for /boot)
   * btrfs - all available space (for /)
   * apply all pending operations

   * I got partitions:
     * fat32 (/dev/sda1)
     * ext4 (/dev/sda2)
     * btrfs (/dev/sda3)

   * set 'boot' flag for fat32 (/dev/sda1) partition (via partition "Properties")
   * apply changes

3. Install system:
   * Launch desktop "Install to Hard Drive"
   * Language: "English (United States)" as default, press Next
   * Select "Mount point assignment", press Next
   * Select mount points:
     * "/" -> "btrfs.46" (got this btrfs name in VM) -> "Reformat" selected
     * "/boot/efi" -> "sda1" -> "Reformat" _NOT_ selected
     * "/boot" -> "sda2" -> "Reformat" selected
   * Press Next
   * Confirm "I understand that some existing data will be erased"
   * Click "Apply mount point assignment and install"

4. Wait and got 'anaconda' exception

Comment 8 Alexander 2026-05-02 22:14:13 UTC
Hello, all! 

Also I tested and encountered the same bug on the latest Fedora Desktop ISOs (v 1.7):
  * Workstation (Fedora-Workstation-Live-44-1.7.x86_64.iso)
  * KDE (Fedora-KDE-Desktop-Live-44-1.7.x86_64.iso)
  * xfce (Fedora-Xfce-Live-44-1.7.x86_64.iso)

Obviously, using the current anaconda version you can not install Fedora with a btrfs (default one) root partition and "Mount point assignments" installation type using Live ISO images.

Comment 9 Katerina Koukiou 2026-05-04 09:02:42 UTC
*** Bug 2464303 has been marked as a duplicate of this bug. ***

Comment 10 Katerina Koukiou 2026-05-04 10:47:43 UTC
*** Bug 2464775 has been marked as a duplicate of this bug. ***

Comment 11 Alexander 2026-05-16 14:07:40 UTC
I discussed the bug on the "Fedora Discussion" forum with additional details and a workaround. May be useful for fixing.

https://discussion.fedoraproject.org/t/unable-to-install-fedora-44-using-mount-point-assignments/191357

Comment 12 Vojtech Trefny 2026-05-26 11:18:57 UTC
*** Bug 2479708 has been marked as a duplicate of this bug. ***