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mpcww
Tux's lil' helper
Joined: 08 Apr 2003
Posts: 115
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 Posted: Tue Aug 06, 2013 3:01 pm Post subject: upgrade to grub2, genkernel, root fs |
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I just tried to upgrade from grub-legacy to grub2 following http://wiki.gentoo.org/wiki/GRUB2_Quick_Start .
When I boot with grub2 I get a
| Code: |
Cannot open root device "sdc6" or unknown_block (0,0) error -6
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I use genkernel since a long time.
I haven't switched to systemd yet.
grub-legacy boots with this kernel without problems.
My grub-97 -configuration is
| Code: |
default 0
timeout 10
title Gentoo
root (hd0,4)
kernel /kernel root=/dev/ram0 real_root=LABEL=G_ROOT udev video=1920x1200-32
initrd=/boot/initramfs
title Gentoo systemd
root (hd0,4)
kernel /kernel root=/dev/ram0 real_root=LABEL=G_ROOT real_init=/usr/lib/systemd/systemd udev video=1920x1200-32
initrd=/boot/initramfs
title GRUB2 Chainload
root (hd0,4))
kernel /boot/grub2/i386-pc/core.img
boot
title Gentoo-old
root (hd0,4)
kernel /kernel.old root=/dev/ram0 real_root=/dev/sdc6 udev
initrd=/boot/initramfs.old
title SystemRescueCd von Festplatte
root (hd0,8)
kernel /sysrcd/rescuecd subdir=sysrcd setkmap=de
initrd /sysrcd/initram.igz
boot
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I suppose grub2 needs more modules compiled into the kernel directly.
But I wonder why grub-97 does its job.
When I compile modules like ata_piix, pata_acpi and some more (see modules list below) which can be compiled into the kernel not as modules,
the order of the disks changed. That is why I already started to label the disk in the fstab to be prepared for that.
But I am not sure if this is the correct approach to solve the grub2 problem.
| Code: |
[...]
00:1f.2 IDE interface: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA IDE Controller (rev 06) (prog-if 8f [Master SecP SecO PriP PriO])
Subsystem: Giga-byte Technology Device b002
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19
[...] Capabilities: [70] Power Management version 3
Capabilities: [b0] PCI Advanced Features
Kernel driver in use: ata_piix
Kernel modules: ata_piix, pata_acpi
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
Subsystem: Giga-byte Technology Device 5001
Flags: medium devsel, IRQ 18
Memory at fbffc000 (64-bit, non-prefetchable) [size=256]
I/O ports at 0500 [size=32]
Kernel driver in use: i801_smbus
Kernel modules: i2c_i801
00:1f.5 IDE interface: Intel Corporation 5 Series/3400 Series Chipset 2 port SATA IDE Controller (rev 06) (prog-if 85 [Master SecO PriO])
Subsystem: Giga-byte Technology Device b002
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19
[...]
Capabilities: [70] Power Management version 3
Capabilities: [b0] PCI Advanced Features
Kernel driver in use: ata_piix
Kernel modules: ata_piix, pata_acpi
[...]
03:06.0 IDE interface: Integrated Technology Express, Inc. IT8213 IDE Controller (prog-if 85 [Master SecO PriO])
Subsystem: Giga-byte Technology GA-EG45M-DS2H Mainboard
Flags: bus master, medium devsel, latency 64, IRQ 17
[...] Capabilities: [80] Power Management version 2
Kernel driver in use: pata_it8213
Kernel modules: pata_it8213, pata_acpi
[...]
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Modules loaded after boot are:
| Code: |
Module Size Used by
joydev 8532 0
ip6table_filter 1260 0
ip6_tables 14336 1 ip6table_filter
iptable_filter 1304 0
ip_tables 13906 1 iptable_filter
x_tables 14287 4 ip6table_filter,ip_tables,iptable_filter,ip6_tables
it87 22814 0
hwmon_vid 2004 1 it87
ipv6 223857 40
uvcvideo 59353 0
snd_usb_audio 96745 1
videobuf2_vmalloc 2480 1 uvcvideo
videobuf2_memops 1527 1 videobuf2_vmalloc
snd_usbmidi_lib 15589 1 snd_usb_audio
videobuf2_core 21378 1 uvcvideo
snd_rawmidi 15555 1 snd_usbmidi_lib
videodev 84733 2 uvcvideo,videobuf2_core
snd_seq_device 4508 1 snd_rawmidi
tun 15741 0
vboxdrv 1759567 0
coretemp 5454 0
kvm_intel 112083 0
kvm 214091 1 kvm_intel
microcode 7268 0
pcspkr 1779 0
snd_hda_codec_hdmi 24040 1
snd_hda_codec_realtek 50830 1
i2c_i801 8317 0
r8169 46960 0
mii 3411 1 r8169
snd_hda_intel 23577 3
snd_hda_codec 66169 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
acpi_cpufreq 6302 0
snd_hwdep 5261 2 snd_usb_audio,snd_hda_codec
mperf 1083 1 acpi_cpufreq
snd_pcm 59586 4 snd_usb_audio,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
freq_table 2162 1 acpi_cpufreq
snd_page_alloc 6282 2 snd_pcm,snd_hda_intel
snd_timer 15309 1 snd_pcm
snd 49538 19 snd_hda_codec_realtek,snd_usb_audio,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_rawmidi,snd_usbmidi_lib,snd_hda_codec,snd_hda_intel,snd_seq_device
processor 25967 1 acpi_cpufreq
xts 2791 0
gf128mul 5274 1 xts
aes_x86_64 7387 0
cbc 2456 0
sha256_generic 9565 0
libiscsi 29532 0
scsi_transport_iscsi 33403 1 libiscsi
tg3 122971 0
libphy 17096 1 tg3
ptp 6924 1 tg3
pps_core 5880 1 ptp
e1000 87331 0
fuse 56965 0
nfs 100645 0
lockd 52437 1 nfs
sunrpc 144977 2 nfs,lockd
btrfs 576063 0
libcrc32c 946 1 btrfs
zlib_deflate 17643 1 btrfs
multipath 5296 0
linear 3183 0
raid10 33982 0
raid456 47220 0
async_pq 2900 1 raid456
async_xor 2145 2 async_pq,raid456
xor 7292 1 async_xor
async_memcpy 1166 1 raid456
async_raid6_recov 1241 1 raid456
raid6_pq 89350 2 async_pq,async_raid6_recov
async_tx 1702 5 async_pq,raid456,async_xor,async_memcpy,async_raid6_recov
raid1 23804 0
raid0 6507 0
dm_snapshot 23402 0
dm_crypt 12769 0
dm_mirror 11163 0
dm_region_hash 6215 1 dm_mirror
dm_log 7418 2 dm_region_hash,dm_mirror
dm_mod 59437 4 dm_log,dm_mirror,dm_crypt,dm_snapshot
hid_sunplus 1393 0
hid_sony 2544 0
hid_samsung 2758 0
hid_pl 1297 0
hid_petalynx 1874 0
hid_monterey 1489 0
hid_microsoft 2707 0
hid_logitech 6813 0
hid_gyration 2012 0
hid_ezkey 1322 0
hid_cypress 1810 0
hid_chicony 2105 0
hid_cherry 1457 0
hid_belkin 1590 0
hid_apple 4978 0
hid_a4tech 1868 0
sl811_hcd 8951 0
usbhid 22770 0
ohci_hcd 19524 0
uhci_hcd 18785 0
usb_storage 42849 0
ehci_pci 3352 0
ehci_hcd 31584 1 ehci_pci
usbcore 128218 12 uhci_hcd,snd_usb_audio,uvcvideo,usb_storage,hid_sony,ohci_hcd,snd_usbmidi_lib,ehci_hcd,ehci_pci,usbhid,sl811_hcd
usb_common 850 1 usbcore
aic94xx 63945 0
libsas 55025 1 aic94xx
qla2xxx 388408 0
megaraid_sas 65865 0
megaraid_mbox 23851 0
megaraid_mm 7000 1 megaraid_mbox
megaraid 36334 0
aacraid 68698 0
sx8 10949 0
DAC960 62494 0
cciss 44661 0
3w_9xxx 29234 0
3w_xxxx 20859 0
mptsas 33217 0
scsi_transport_sas 21651 3 libsas,mptsas,aic94xx
mptfc 10412 0
scsi_transport_fc 39429 2 qla2xxx,mptfc
scsi_tgt 8184 1 scsi_transport_fc
mptspi 11341 0
mptscsih 16553 3 mptfc,mptsas,mptspi
mptbase 55028 4 mptfc,mptsas,mptspi,mptscsih
atp870u 22664 0
dc395x 26913 0
qla1280 19535 0
imm 8754 0
parport 26475 1 imm
dmx3191d 8961 0
sym53c8xx 62275 0
gdth 73213 0
advansys 49099 0
initio 14956 0
BusLogic 19412 0
arcmsr 23761 0
aic7xxx 104789 0
aic79xx 108906 0
scsi_transport_spi 17480 5 mptspi,sym53c8xx,aic79xx,aic7xxx,dmx3191d
sr_mod 10935 0
cdrom 28405 1 sr_mod
sg 21944 0
sd_mod 25928 18
pdc_adma 5261 0
sata_inic162x 6325 0
sata_mv 22951 0
ata_piix 22119 12
ahci 21256 0
libahci 17458 1 ahci
sata_qstor 5012 0
sata_vsc 3929 0
sata_uli 2948 0
sata_sis 3597 0
sata_sx4 7919 0
sata_nv 18130 0
sata_via 7555 0
sata_svw 4237 0
sata_sil24 10087 0
sata_sil 7167 0
sata_promise 9687 0
pata_sl82c105 3597 0
pata_cs5530 4216 0
pata_cs5520 3582 0
pata_via 8284 0
pata_jmicron 2323 0
pata_marvell 2835 0
pata_sis 10182 1 sata_sis
pata_netcell 2153 0
pata_sc1200 2962 0
pata_pdc202xx_old 4366 0
pata_triflex 3127 0
pata_atiixp 4419 0
pata_opti 2729 0
pata_amd 10079 0
pata_ali 8965 0
pata_it8213 3370 2
pata_pcmcia 9685 0
pcmcia 29211 1 pata_pcmcia
firmware_class 9212 8 tg3,qla1280,qla2xxx,r8169,libsas,pcmcia,aic94xx,advansys,microcode
pcmcia_core 10509 1 pcmcia
pata_ns87415 3220 0
pata_ns87410 2712 0
pata_serverworks 5068 0
pata_platform 3051 0
pata_artop 4822 0
pata_it821x 8285 0
pata_optidma 4401 0
pata_hpt3x2n 5404 0
pata_hpt3x3 2960 0
pata_hpt37x 10864 0
pata_hpt366 5008 0
pata_cmd64x 6722 0
pata_efar 3502 0
pata_rz1000 2685 0
pata_sil680 4529 0
pata_radisys 2898 0
pata_pdc2027x 6211 0
pata_mpiix 2822 0
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Last edited by mpcww on Tue Aug 06, 2013 5:49 pm; edited 1 time in total |
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mpcww
Tux's lil' helper
Joined: 08 Apr 2003
Posts: 115
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| Posted: Tue Aug 06, 2013 5:46 pm Post subject: |
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Just to exlude a problem with my kernel configuration I temporarily installed a kernel based on the live-cd-config slightly changed due to my Intel-i915-graphic.
I compiled and installed that one using genkernel-3.4.45.1 .
I tried three variations of booting from my menu.lst :
- Traditional boot with openrc ("Gentoo") => didn't find root labled G_ROOT
- Gentoo systemd boot => didn't find root labled G_ROOT
This is a special case see here
- finally I jumped to grub2 just to make sure it didn't work either
Most of the partitions are separated (fstab):
| Code: |
LABEL=G_BOOT /boot ext4 discard,noauto,noatime 1 2
LABEL=G_ROOT / ext4 discard,noatime,errors=remount-ro 0 1
LABEL=G_SWAP none swap sw 0 0
LABEL=G_USR /usr ext4 discard,noatime,errors=remount-ro 0 1
LABEL=G_VM /vm ext4 noatime 0 1
LABEL=G_VAR /var ext4 noatime 0 1
LABEL=G_CCACHE /ccache ext4 noatime 0 1
LABEL=G_OPT /opt ext4 discard,noatime,errors=remount-ro 0 1
LABEL=G_DISTFILES /var/portage/distfiles ext4 noatime 0 1
LABEL=G_MUCKE /mucke ext4 noatime,grpid,acl 0 1
LABEL=SRCD /systemrescuecd auto discard,noatime,errors=remount-ro 0 1
LABEL=G_VIDEO /video ext4 noatime 0 1
LABEL=G_HOME /home ext4 noatime 0 1
LABEL=G_FOTOS /Fotos ext4 noatime,grpid,acl 0 1
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mpcww
Tux's lil' helper
Joined: 08 Apr 2003
Posts: 115
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| Posted: Wed Aug 07, 2013 3:10 pm Post subject: |
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Meanwhile I compiled
ATA AHCI Support
Intel EXP, ICH, PIIX3, PIIX4 PATA and SATA Support
IT8213 PATA Support
ACPI firmware driver for PATA
into the kernel. So there shouldn't be an issue with missing modules any more.
With Labels in fstab and the root / real_root kernel parameter as well
these both boot alternatives
- Traditional boot with openrc ("Gentoo")
- Gentoo systemd boot
find the root device and boot.
How do I get grub2 to work with that solution ?
Hopefully there is an easier way to get grub2-mkconfig consider Labels instead of UUIDs as it is described here
http://ubuntuforums.org/showthread.php?t=1530532&page=2
Any ideas ?
By now I get a grub.cfg generated which refers on UUIDs:
| Code: |
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos7 --hint-efi=hd1,msdos7 --hint-baremetal=ahci1,msdos7 bcdf019d-7e11-4abd-a960-df4f1afe8214
else
search --no-floppy --fs-uuid --set=root bcdf019d-7e11-4abd-a960-df4f1afe8214
fi
font="/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=de_DE
insmod gettext
fi
terminal_output gfxterm
if sleep --interruptible 0 ; then
set timeout=10
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Gentoo GNU/Linux' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-74cc509b-7c80-4c77-a2c5-a46aad7816f8' {
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='hd1,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos5 --hint-efi=hd1,msdos5 --hint-baremetal=ahci1,msdos5 7c6dd010-a374-45c4-a375-43113eca2a38
else
search --no-floppy --fs-uuid --set=root 7c6dd010-a374-45c4-a375-43113eca2a38
fi
echo 'Linux gernkern1-x86_64-3.8.13-gentoo wird geladen …'
linux /kernel-gernkern1-x86_64-3.8.13-gentoo root=/dev/sdb6 ro
}
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Randy Andy
Veteran
Joined: 19 Jun 2007
Posts: 1148
Location: /dev/koelsch
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| Posted: Wed Aug 07, 2013 4:45 pm Post subject: |
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Hi mpcww.
All the trouble, the automatism and the presettings GRUB2 came with, is why I don't like or use it.
To get it under your control, you have to study it, to get the automatism off.
Maybee it's ok for binary Distros, where everything should work OOTB, but as a Gentoo User I would do things manually with the most of control and comfort.
And after changing something manually, you have to update it, as in the good old times as we did it with LILO - ha, very comfortable.
But I know sometimes there are good reasons to use it.
Hopefully these day will never come for me, cause I'm not willing to by any UEFI System including "Restricted Boot".
Also I'm not using LVM - some day I will try Btrfs instead.
But that's a different story and only my personal preference.
*************************************************
Nevertheless 'Ive done some research in the past and guess I had the solution for your problem, without doing any crap, your refer points to in the Ubuntu Forum.
1.) Make sure your 40_custom or a 41_custom file is executable (chmod +x)
2.) Edit it in a way like this with the kernel naming entries to your needs:
| Code: |
#!/bin/sh
exec tail -n +3 $0
menuentry "My Gentoo" {
search --label --no-floppy --set=root G_ROOT
linux /boot/vmlinuz-2.6.32-5-686 root=/dev/disk-by-label/G_ROOT
initrd /boot/initrd.img-2.6.32-5-686
}
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I guess G_ROOT in the example above, is the name of your Label of the device you've named in a way like | Code: | | tune2fs -L G_ROOT /dev/sdxn |
or | Code: | | e2label /dev/sdxn G_ROOT |
3.) Update your grub in a way like this
or
| Code: | | grub-mkconfig -o /boot/grub/grub.cfg |
I hope this works for you, If not, please don't rant on me. I never done it by myself, no practice with GRUB2 as I said.
Much success
Andy.
_________________
If you want to see a Distro done right, compile it yourself! |
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mpcww
Tux's lil' helper
Joined: 08 Apr 2003
Posts: 115
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| Posted: Wed Aug 07, 2013 9:05 pm Post subject: |
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Hi Andy,
first of all special thanks for your introduction !
To be honest I share(d) your preference for the legacy grub.
Since a few days I fumbeld around with the upgrade to gnome 3.8 and it's depency (gdm's dependency) on systemd.
I stumbled across disk order, missing root fs etc.
In that discussion somenbody mentioned grub2 with no special technical relationship to the systemd problems I had.
But I noticed there were no more advices againgst grub2 to find in the gentoo documentation and - I confess with little caution:
I decided to change that as well .
To test it I use a chainload from grub-97 to grub2, that makes the fallback easier.
The change in 40-custom file worked as you described. I just needed to consider grub.cfg to be located at /boot/grub2/grub.cfg.
I think I have to read more of the documentation, because it complains about not finding disk G_ROOT now.
So no ranting, just saying thanks. |
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Installing Gentoo
