Re: Grub2 install with / on lvm

[jeff]

1.  /boot/efi/EFI/ubuntu/grub.cfg  contains the following:
search.fs_uuid 27ae300a-06fd-44f6-bf66-97c42e1c2052 root 
lvmid/030tOx-2dEO-kglk-6Wbk-c553-ica7-DZhMdW/Sk4ZIt-sHBd-n1DK-DgRK-7MWH-FYAv-NLwmA7
 
set prefix=($root)'/boot/grub'
configfile $prefix/grub.cfg


> Well, it still defaults to using shim for secure boot. This hints that
> grubx64.efi is not dynamically created at run time. When you run
> whatever program your distro use to update bootloader - is time stamp
> of grubx64.efi updated? Does it itself change?

2.  The time stamp on grubx64.efi is Feb. 4th, which I trace back to when I 
manually ran grub-install after my initial installation.  The initial 
installation occurred on Feb. 2nd, and that is what my /boot/efi and /boot/grub 
directories are time stamped.  I rebooted the box this morning after being off 
all weekend.  I hope that answers your question, if not I am not sure of the 
question.

Jeff



-----Original Message-----
From: "Andrei Borzenkov" <address@hidden>
Sent: Monday, February 9, 2015 11:54am
To: address@hidden
Cc: address@hidden
Subject: Re: Grub2 install with / on lvm

В Mon, 9 Feb 2015 11:09:14 -0800 (PST)
address@hidden пишет:

> Sorry for the top posting.
> 
> 1.  Secure boot is NOT enabled.
> 
> 2.  I have the following directory structure and files under boot
> /boot/efi/EFI/ubuntu
> grub.cfg

What is in this grub.cfg?

> grubx64.efi
> MokManager.efi
> shimx64.efi
> 
> 3.  Output of efibootmgr -v
> 
> BootCurrent: 0008
> Timeout: 2 seconds
> BootOrder: 0000,0008,0001,0002,0003,0004,0007
> Boot0000* ubuntu      
> HD(1,800,fa000,efdf8fb6-08fd-45bc-b62c-ab9bc39721ee)File(\EFI\ubuntu\shimx64.efi)

Well, it still defaults to using shim for secure boot. This hints that
grubx64.efi is not dynamically created at run time. When you run
whatever program your distro use to update bootloader - is time stamp
of grubx64.efi updated? Does it itself change?

> Boot0001* Diskette Drive      BIOS(1,0,4469736b6574746520447269766500)AMBO
> Boot0002* Internal HDD        BIOS(2,0,496e7465726e616c2048444400)AMBO
> Boot0003* USB Storage Device  
> BIOS(5,0,5553422053746f726167652044657669636500)AMBO
> Boot0004* CD/DVD/CD-RW Drive  
> BIOS(3,0,50343a20484c2d44542d5354204456442b2f2d525720474842304e20202000)AMBO
> Boot0005  Onboard NIC BIOS(6,0,4f6e626f617264204e494300)AMBO
> Boot0007* Onboard NIC BIOS(6,0,4f6e626f617264204e494300)AMBO
> Boot0008* UEFI: HL-DT-ST DVD+/-RW GHB0N       
> ACPI(a0341d0,0)PCI(1f,2)03120a000400ffff0000CD-ROM(1,11a6,1680)AMBO
> BootFFFA* Internal Shell              
> Vendor(5990c250-676b-4ff7-8a0d-529319d0b254,)
> BootFFFB* Diagnostic Boot             
> Vendor(5990c250-676b-4ff7-8a0d-529319d0b254,)
> BootFFFC* Temporary Boot Menu         
> Vendor(5990c250-676b-4ff7-8a0d-529319d0b254,)
> BootFFFD* Graphic Setup               
> Vendor(5990c250-676b-4ff7-8a0d-529319d0b254,)
> BootFFFE* Text Setup                  
> Vendor(5990c250-676b-4ff7-8a0d-529319d0b254,)
> 
> 
> Jeff
> 
> 
> -----Original Message-----
> From: "Andrei Borzenkov" <address@hidden>
> Sent: Monday, February 9, 2015 10:51am
> To: address@hidden
> Cc: address@hidden
> Subject: Re: Grub2 install with / on lvm
> 
> В Mon, 9 Feb 2015 08:51:37 -0800 (PST)
> address@hidden пишет:
> 
> > The results of the bootinfoscript output is located here.
> > 
> > http://pastebin.com/EUyueeG1
> > 
> 
> From grub point of view it looks just fine - it detects XFS and LVM and
> creates correct boot.cfg. is secure boot enabled on your system? What
> is content of /boot/efi/ubuntu? Could you show "efibootmgr -v" output
> (I probably should add it to bootinfoscript ...)?
> 
> > Jeff
> > 
> > 
> > -----Original Message-----
> > From: "Andrei Borzenkov" <address@hidden>
> > Sent: Saturday, February 7, 2015 9:15am
> > To: address@hidden
> > Cc: address@hidden
> > Subject: Re: Grub2 install with / on lvm
> > 
> > В Sat, 7 Feb 2015 09:03:38 -0800 (PST)
> > address@hidden пишет:
> > 
> > > Ok, I learned something new here.  What would be a better choice for the 
> > > filesystem for /boot.  I am using xfs for everything else.
> > 
> > I usually use ext2 if it is separate partition. Otherwise xfs should
> > work if /boot is not separate filesystem and is on root.
> > 
> > > 
> > > Grub was installed using the standard OS installation in Linux Mint 17.  
> > > I haven't had much luck getting good knowledgable detailed answers there; 
> > > more speculation and hypotheses.  It is good to know that grub install 
> > > would normally include the LVM driver, so it is possible that Mint 
> > > installation is not recognizing that I am using LVM.  Is there a grub 
> > > config file that would identify the drivers that are pulled in, and I 
> > > would be able to see if the driver for LVM is included.  I don't want to 
> > > get into hand editing grub configuration files to get my system running.  
> > > I would prefer to have it automatically the right way, I just want to 
> > > understand what it did in case it helps find or fix a bug in the Mint 
> > > installation.
> > 
> > There are two pieces here. One is core.img that is loaded initially. It
> > includes grub modules (drivers) needed to access /boot/grub.
> > Unfortunately there is no easy way to see them. Another step is loading
> > operating system files. It is in /boot/grub/grub.cfg and you should
> > actually see "insmod lvm" there.
> > 
> > > 
> > > After I booted the system from the SuperGrub2 disk, I did run 
> > > grub-install /dev/sda just to see what would happen (since I was 
> > > considering re-installing anyway).  If I recall it ran without error, but 
> > > still wouldn't boot and had the same reference to hd1.
> > 
> > it may happen if you have incorrect /boot/grub/device.map. If you have
> > it, remove it. It is not needed by grub unless you have very unusual
> > configuration and have to work around some problem.
> > 
> > It may be useful to provide output of running
> > https://github.com/arvidjaar/bootinfoscript/raw/master/bootinfoscript
> > Upload it to pastebin or like.
> > 
> > 
> > 
> > _______________________________________________
> > Help-grub mailing list
> > address@hidden
> > https://lists.gnu.org/mailman/listinfo/help-grub
> 
> 
> 
> 
> 
> _______________________________________________
> Help-grub mailing list
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