Install Gentoo in VM.

Write down my experience to install gentoo in vm.

1.
Boot from install-x86-minimal-20140902.iso

2.
mount /dev/sda1 /mnt/gentoo

3.
links http://www.gentoo.org/main/en/mirrors.xml

4.
mount -t proc proc /mnt/gentoo/proc
mount --rbind /dev /mnt/gentoo/dev
mount --rbind /sys /mnt/gentoo/sys
cp -L /etc/resolv.conf /mnt/gentoo/etc/
chroot /mnt/gentoo /bin/bash
source /etc/profile

5.
emerge gentoo-sources

6.
cd /usr/src/linux
make menuconfig
make -j2

7.
cp arch/x86/boot/bzImage /boot/kernel-$(uname -r)

8.
make modules_install

9.
emerge genkernel
genkernel --install --no-ramdisk-modules initramfs
(It will create initramfs-genkernel-x86-3.14.16-gentoo in /boot/.)

10.
cat /etc/fstab
/dev/sda1 / ext4 noatime 0 1

11.
change root password

12
emerge grub

13.
livecd ~ # grub2-install /dev/sda
Installation finished. No error reported.

livecd ~ # grub2-mkconfig -o /boot/grub/grub.cfg
Generating grub.cfg ...
Found linux image: /boot/kernel-3.14.16-gentoo
Found initrd image: /boot/initramfs-genkernel-x86-3.14.16-gentoo
done

14.
emerge dhcpcd

echo "modules = "dhcpcd"" > /etc/conf.d/net
echo "config_enp2s1="dhcp" >> /etc/conf.d/net

Problem:
scripts/mod/empty.c:1:0: error: CPU you selected does not support x86-64 instruction set

Solution:
When make menuconfig, make sure un-check 64-bit kernel.
[ ] 64-bit kernel

Problem:
/usr/bin/xz: /var/tmp/genkernel/initramfs-3.14.16-gentoo: Cannot allocate memory
ERROR: Compression (/usr/bin/xz -e --check=none -z -f -9) failed

Solution:
Increase memory for the VM. In my case, to 1GB.

Problem:
Could not find the root block device in UUID=XXX

Solution:
livecd ~# lspci
SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI (rev 01)
Ethernet controller: Advanced Micro Devices, Inc. [AMD] 79c970 [PCnet32 LANCE] (rev 10)

When make menuconfig, make sure

Device Drivers  --->
SCSI device support  --->
[*] SCSI low-level drivers  --->
<*>   BusLogic SCSI support
[*] Fusion MPT device support  --->
<*>   Fusion MPT ScsiHost drivers for SPI
<*>   Fusion MPT ScsiHost drivers for FC
<*>   Fusion MPT ScsiHost drivers for SAS
<*>   Fusion MPT misc device (ioctl) driver

[*] Network device support  --->
[*]   Ethernet driver support  --->
<*>     AMD PCnet32 PCI support


Reference:
http://www.gentoo.org/doc/en/gentoo-x86-quickinstall.xml
http://www.360doc.com/content/13/1030/15/1956846_325320292.shtml