URL:
<https://savannah.gnu.org/bugs/?62756>
Summary: grub-install fails with /dev/md_NAME style device
names
Project: GNU GRUB
Submitter: hunor
Submitted: Tue 12 Jul 2022 05:36:30 PM UTC
Category: Installation
Severity: Major
Priority: 5 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Release: Git master
Release:
Discussion Lock: Any
Reproducibility: Every Time
Planned Release: None
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Follow-up Comments:
-------------------------------------------------------
Date: Tue 12 Jul 2022 05:36:30 PM UTC By: Csordás Hunor <hunor>
I get the following error from grub-install on Linux with named md devices:
# grub-install --no-nvram
Installing for x86_64-efi platform.
grub-install: error: unknown kind of RAID device `/dev/md_efi'.
The reason is that grub_util_get_raid_grub_dev in
grub-core/osdep/linux/getroot.c doesn't support this device name format, and
fails before even trying to figure out the mduuid/* one.
The device name is not arbitary - the mdadm utility creates device names like
this in /dev if the "CREATE names=yes" option is present in its configuration
file. Incidentally, mdadm (because of a bug) requires this option to allow the
creation of the usual /dev/md/NAME symlinks since Linux 5.18 (unless the
kernel is configured with the "new" CONFIG_BLOCK_LEGACY_AUTOLOAD config
option).
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