| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000666 | AlmaLinux-10 | General | public | 2026-08-28 08:52 | 2026-08-28 08:52 |
| Reporter | quannguyen247 | Assigned To | |||
| Priority | high | Severity | major | Reproducibility | always |
| Status | new | Resolution | open | ||
| Platform | x86_64 | OS | AlmaLinux | OS Version | 10.2 |
| Summary | 0000666: DNF allows removal of lvm2 on LVM root installations, causing unbootable initramfs during kernel updates | ||||
| Description | Description: On systems installed with the root filesystem on an LVM Logical Volume (e.g. /dev/mapper/almalinux-root), the `lvm2` package is not guarded under `/etc/dnf/protected.d/`. If `lvm2` is removed (manually or transitively via dependency resolution / autoremove), DNF proceeds without verifying whether the active root filesystem depends on LVM. Once `lvm2` is removed: 1. `/usr/sbin/lvm` and LVM dracut module dependencies are wiped. 2. The next kernel update or `dracut -f --regenerate-all` invocation builds initramfs images without LVM support. 3. Upon reboot, Dracut cannot assemble the volume group and fails to locate the root device (`/dev/mapper/almalinux-root not found`), dropping into the emergency shell and rendering all updated kernels unbootable. Proposed Solution: 1. Anaconda or base configuration should automatically place a protection entry (e.g. `/etc/dnf/protected.d/lvm2.conf` containing `lvm2`, `lvm2-libs`, `device-mapper`, `device-mapper-libs`) if the root partition is located on an LVM volume. 2. Dracut should emit a fatal error or warning when root in `/etc/fstab` is on `/dev/mapper/*` but `lvm` binaries/modules are absent. Environment: - OS: AlmaLinux 10.2 (x86_64) - Kernel: 6.12.0-211.49.1.el10_2.x86_64 - dnf: dnf-4.20.0-22.el10_2.alma.1.noarch - dracut: dracut-107-9.el10_2.x86_64 - lvm2: lvm2-2.03.36-2.el10.x86_64 | ||||
| Steps To Reproduce | 1. Deploy AlmaLinux 10 with root on LVM (/dev/mapper/almalinux-root). 2. Execute `dnf remove lvm2` (DNF completes without error or root storage validation). 3. Perform a kernel update or run `dracut -f --regenerate-all`. 4. Reboot into the newly generated kernel. 5. System fails during initramfs stage with "root not found" and drops to emergency shell. | ||||
| Additional Information | Tested Package Versions: - dnf: 4.20.0-22.el10_2.alma.1.noarch - dracut: 107-9.el10_2.x86_64 - lvm2: 2.03.36-2.el10.x86_64 - kernel: 6.12.0-211.49.1.el10_2.x86_64 | ||||
| Tags | boot, dnf, dracut, lvm2 | ||||
- Anonymous
