Re: Grub2 install with / on lvm

[Andrei Borzenkov]

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.
> 
> 
> 
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