On 5/6/19 4:47 PM, Chris Murphy wrote:
On Mon, May 6, 2019 at 1:04 PM Steven A. Falco
<stevenfalco(a)gmail.com> wrote:
>
>> # grub2-editenv list
>
> Here is the command output:
>
> saved_entry=2aa6409d5c354eea9cc2e4630c4efda0-5.0.11-300.fc30.x86_64
> boot_success=1
> boot_indeterminate=1
> kernelopts=root=/dev/mapper/fedora-root ro resume=/dev/mapper/fedora-swap
rd.lvm.lv=fedora/root rd.md.uuid=77ae1678:58a79067:c0ad29e6:bd1862f8
rd.md.uuid=bac1fa34:2d7a26e5:969d63ac:33ff4572 rd.lvm.lv=fedora/swap
Looks normal.
Also, about the /boot/grub2/grubenv symlink to
/boot/efi/EFI/fedora/grubenv - I'm only seeing this on clean installs
from Fedora-Workstation-Live-x86_64-30-1.2.iso so it might be related
to how the lives are assembled and rsync'd over. It doesn't happen
with a minimal or server installation on a BIOS VM.
The install originated as a "server edition", so that is consistent.
At the moment, I think whatever problem there was has been cleared
and
it's now behaving normally.
Agreed.
> I'm reading through the various scripts trying to understand
the impact of GRUB_DEFAULT. It seems like having GRUB_DEFAULT=saved is not currently
hurting me. The last upgrade, to 5.0.11-300, properly made that kernel the new default.
>
> If GRUB_DEFAULT is commented out, then I think grub will always choose the first item
in its menu, which would be fine, because the newest kernel always appears first in the
grub menu. Is that why you recommended commenting it out?
Nope, sorry, you're confused. I referred to GRUB_SAVEDEFAULT -
thinking maybe you had a customized /etc/default/grub. GRUB_DEFAULT
and GRUB_SAVEDEFAULT are two different things, but the latter depends
on the former.
It wouldn't be the first time I was confused. :-)
I suggest keeping things as is, with saved_entry set in the grubenv.
And that's because GRUB and the grub-boot-success.service are able to
do an automatic fallback to the previous working kernel if boot fails
following a kernel upgrade.
I will leave it alone, as you recommend.
As I was reading through the documentation, I came across a statement that grubenv is
unavailable on RAID - please see the second to last sentence here:
https://www.gnu.org/software/grub/manual/grub/html_node/Environment-block...
My machine is set up with /boot on SW RAID-1 (and everything else on SW RAID-5 / LVM).
That said, grubenv appears to update properly. I don't know if the manual is not
quite current, or if there is some other explanation - perhaps any updates always occur
under Linux, while the RAID-1 is assembled.
Regardless, everything is good now, so I'll stop obsessing about it. :-)
And thanks for all your help!
Steve