Issue

Description of problem: With RHEL9, the /boot/efi/EFI/redhat/grub.cfg file is now a wrapper redirecting to unified configuration file /boot/grub2/grub.cfg. It appears that the wrapper can fail to find /boot partition (or / if /boot and / are merged). This especially happens if /boot/efi is on its own disk (e.g. /dev/vda) while the rest is on another disk (e.g. /dev/vdb). The root cause is EFI firmware didn't plumb all disks, but only the one hosting /boot/efi. This happens at least with VMWare at hardware level 19 and QEMU/KVM (Fedora 37). The solution is to add the following stanza before searching for the device: -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- connectefi scsi -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- Version-Release number of selected component (if applicable): grub2-common-2.06-46.el9.noarch and later How reproducible: Always Steps to Reproduce: 1. Create a QEMU/KVM VM with 2 disks vda: 1GB, which will host /boot/efi vdb: 10GB, which will host the rest 2. Install the system making sure /boot/efi is on vda and the rest on vdb 3. Poweroff the system once installation complete (don't just reboot) 4. Boot the system on disk Actual results: Grub prompt Expected results: System boots Additional info: At Grub prompt we can see only vda is connected, preventing /boot from being found: -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- grub> ls (proc) (hd0) (hd0,gpt1) grub> cat /efi/redhat/grub.cfg grub> cat /efi/redhat/grub.cfg search --no-floppy --fs-uuid --set=dev f2ed30fe-ff8d-44bc-9b06-342f4f31f6b1 set prefix=($dev)/grub2 export $prefix configfile $prefix/grub.cfg grub> search --no-floppy --fs-uuid --set=dev f2ed30fe-ff8d-44bc-9b06-342f4f31f6b1 error: ../../grub-core/commands/search.c:315:no such device: f2ed30fe-ff8d-44bc-9b06-342f4f31f6b1. -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- After executing "connectefi scsi", the partition is found: -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- grub> connectefi scsi grub> ls (proc) (hd0) (hd0,gpt1) (hd1) (hd1,gpt2) (hd1,gpt1) (cd0) (cd0,msdos2) (lvm/rhel-swap) (lvm/rhel-root) grub> search --no-floppy --fs-uuid --set=dev f2ed30fe-ff8d-44bc-9b06-342f4f31f6b1 -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------

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Resolution

Unresolved