[Fedora-xen] grub2 vs. Xen

[Bill McGonigle]

Hi, folks,

I've got two problems with grub2 that I thought others might have solved already.   My
initial attempts haven't been fruitful.

I have an f20 Dom0.  
  xen-4.3.2-1.fc20.x86_64
  grub2-2.00-25.fc20.x86_64


Problem #1

My /etc/default/grub looks like [1].  

I try to set the Dom0 to boot with:

  grub2-set-default 'Fedora, with Xen 4.3.2 and Linux 3.12.10-300.fc20.x86_64'

and the default non-Xen menuentry gets booted instead.

It's definitely there in the config file [2] and I can boot it manually.  I really
need the machine to be able to boot unattended.  I tried setting it manually in
/etc/grub/default but that doesn't work either.

I'm generating the grub.cfg with grub2-mkconfig > /boot/grub2/grub.cfg and have
re-installed grub2 on my /dev/sda and /dev/sdb (raid-1 /boot).


Problem #2

When I try to boot from grub manually, I first get an error message saying
"xen_rm_opts" unknown command.  In each Xen menuentry, I see, e.g.:

        echo    'Loading Xen xen ...'
        if [ "$grub_platform" = "pc" -o "$grub_platform" =
"" ]; then
            xen_rm_opts
        else
            xen_rm_opts="no-real-mode edd=off"
        fi

whereas in previous times I remember the first conditional block saying:

   xen_rm_opts=

I presume that makes the difference between a statement and an assignment in whatever
sh-ish language grub is using.  I'm not sure where to fix that as I'm no grub2
expert.  I kinda miss the simplicity of 'default=6'. :)


My third possible-grub problem relates to memory and I'm not sure it really is a
problem in grub2 yet, so I'll post that separately.

Thanks in advance!
-Bill

[1]

GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="Fedora"
GRUB_DEFAULT="saved"
GRUB_CMDLINE_LINUX="root=LABEL=librescu-root rootflags=data=journal rd_NO_LUKS
rd.md=auto rd.lvm=0 rd.dm=0 KEYTABLE=us SYSFONT=lata
rcyrheb-sun16 rd.luks=0 LANG=en_US.UTF-8 selinux=0 elevator=deadline mem=4096M max_loop=32
selinux=0 ipv6.disable=1"
GRUB_CMDLINE_XEN="dom0_max_vcpus=2 dom0_vcpus_pin dom0_mem=4096M,max:4096M"
GRUB_SERIAL_COMMAND="serial --unit=0 --speed=19200 --word=8 --parity=no
--stop=1"
GRUB_TIMEOUT=10
GRUB_TERMINAL="serial console"

[2]

# grep "'Fedora, with Xen 4.3.2 and Linux 3.12.10-300.fc20.x86_64'"
/boot/grub2/grub.cfg 
                menuentry 'Fedora, with Xen 4.3.2 and Linux
3.12.10-300.fc20.x86_64' --class fedora --class gnu-linux --class gnu --class os
--class xen $menuentry_id_option
'xen-gnulinux-3.12.10-300.fc20.x86_64-advanced-9ccf2a16-82bf-41b0-a35f-1d79d63b3e28'
{






-- 
Bill McGonigle, Owner   
BFC Computing, LLC       
http://bfccomputing.com/ 
Telephone: +1.855.SW.LIBRE
Email, IM, VOIP: bill(a)bfccomputing.com           
VCard: http://bfccomputing.com/vcard/bill.vcf
Social networks: bill_mcgonigle/bill.mcgonigle