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I'm installing gentoo hardened on several machines all with btrfs root |
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filesystems, the simplest of which is a single gpt partitioned disk. |
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This is my current partitioning scheme (based on numerous conflicting |
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explainations on the wiki and handbook): |
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|
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# gdisk /dev/sda -l |
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GPT fdisk (gdisk) version 1.0.1 |
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|
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Partition table scan: |
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MBR: protective |
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BSD: not present |
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APM: not present |
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GPT: present |
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|
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Found valid GPT with protective MBR; using GPT. |
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Disk /dev/sda: 1953525168 sectors, 931.5 GiB |
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Logical sector size: 512 bytes |
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Disk identifier (GUID): 4C1FE8C1-69CE-4433-A3E4-7060FFF5AF10 |
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Partition table holds up to 128 entries |
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First usable sector is 34, last usable sector is 1953525134 |
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Partitions will be aligned on 2048-sector boundaries |
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Total free space is 2014 sectors (1007.0 KiB) |
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|
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Number Start (sector) End (sector) Size Code Name |
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1 2048 1050623 512.0 MiB EF00 EFI System |
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2 1050624 9439231 4.0 GiB 8200 Linux swap |
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3 9439232 1953525134 927.0 GiB 8300 Linux filesystem |
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|
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grub2-mkconfig generates no menu entries. Do I need anything generated |
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by /etc/grub.d/00_header? That output looks like garbage. |
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|
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The only real relevant configuration in /etc/default/grub should be correct. |
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|
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GRUB_CMDLINE_LINUX="root=UUID=f0373f0c-3798-4965-a845-b1b94cc14731 |
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rootfstype=btrfs |
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rootflags=rw,noatime,compress=zlib,space_cache,subvol=rootfs" |
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|
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I've tried several values for GRUB_DEVICE, which has no effect. This |
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page says an initramfs isn't needed even (for either btrfs RAID or |
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non-RAID configuration), though several pages disagree on this. |
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https://wiki.gentoo.org/wiki/GRUB2 |
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|
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grub2-install also fails: |
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|
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# grub2-install --target=x86_64-efi /dev/sda |
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Installing for x86_64-efi platform. |
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grub2-install: error: cannot find EFI directory. |
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|
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What EFI directory? The one I created under /boot? |
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|
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I've also tried a pure EFI stub loader. Attempting to build a dracut |
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image into the kernel causes the build to fail in various ways |
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depending on the compression method used. |
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|
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GEN usr/initramfs_data.cpio.gz |
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ERROR: incorrect format, could not locate file type line 8: '' |
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usr/Makefile:73: recipe for target 'usr/initramfs_data.cpio.gz' failed |
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make[1]: *** [usr/initramfs_data.cpio.gz] Error 255 |
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Makefile:949: recipe for target 'usr' failed |
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make: *** [usr] Error 2 |
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make: *** Waiting for unfinished jobs... |
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|
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This page suggests generating an uncompressed image with dracut and |
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renaming the file with a .cpio extension which I'd guess is erroneous |
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advice. https://wiki.gentoo.org/wiki/EFI_stub_kernel . The remaining |
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instructions WRT eficompmgr all seem to assume I've been able to build |
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a kernel with a built-in command line and initramfs. |
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|
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Is there any simpler way of doing this? I've gotten grub2 to work with |
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a btrfs RAID 10 and initramfs in the past but somehow grub2-mkconfig |
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isn't working now. |
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