root on lvm2: can't find logical volumes

[yalu2]

I am trying to install Gentoo on my Sun Ultra5 with the root fs on lvm. Problems arise when I boot the kernel. I built a kernel and initrd with lvm support.

My silo.conf:

Code: Select all

partition=1
root=/dev/mapper/aardbei-root
timeout=50
default=linux
read-only

image = /kernel-genkernel-sparc64-2.6.21-gentoo-r4
        label=linux
        initrd=/initramfs-genkernel-sparc64-2.6.21-gentoo-r4
        append="video=atyfb:off udev root=/dev/ram0 real_root=/dev/aardbei/root init=/linuxrc"

Last messages when it boots:

Code: Select all

>> Loading modules
>> Activating mdev
>> Scanning for Volume Groups
  Reading all physical volumes. This may take a while...
  Found volume group "aardbei" using metadata type lvm2
>> Activating Volume Groups
  0 logical volume(s) in volume group "aardbei" now active
>> Determining root device...
!! Block device /dev/aardbei/root is not a valid root device...
!! the root block device is unspecified or not detected.
   Please specify a device to boot, or "shell" for a shell...
boot() :: _

Also, I can't type "shell" and enter a shell. It seems as if the keyboard is dead. my only option is to power off...

[djscribble]

Is your boot partition on your in your vg?? if so, then you have some serious problems (IMHO) however if it is not, then you need to change your initial root= line from /dev/mapper/aardbei-root to be root=/dev/[boot device]

[nixnut]

Moved from Installing Gentoo to Gentoo on Sparc.
Sparc stuff, so moved here.

[SStreet]

From the looks of the kernel mesages kicked out, specifically:

">> Scanning for Volume Groups
Reading all physical volumes. This may take a while...
Found volume group "aardbei" using metadata type lvm2
>> Activating Volume Groups
0 logical volume(s) in volume group "aardbei" now active "

It appears that dm-mod is not in the kernel (perhaps you have it in as a module?) You'll need to rebuild the kernel with that built-in to have root as a lvm managed volume -- though not recommended.

All of my setups on the 3 archs I run (PPC, Sparc64, and x86) each has a root as a mirrored (md) partition, and a second mirror partition that holds the PV for LVM.

ie: on my sparc64:

• (/dev/sda) (first disk)
  Disk /dev/sda (Sun disk label): 255 heads, 63 sectors, 8922 cylinders
  Units = cylinders of 16065 * 512 bytes
  
  Device Flag Start End Blocks Id System
  /dev/sda1 0 12 96390 83 Linux native
  /dev/sda2 12 134 979965 fd Linux raid autodetect
  /dev/sda3 0 8922 71665965 5 Whole disk
  /dev/sda4 305 8922 69216052+ fd Linux raid autodetect
  /dev/sda5 134 305 1373557+ fd Linux raid autodetect

(/dev/sdb)(second disk)

• Disk /dev/sdb (Sun disk label): 255 heads, 63 sectors, 8922 cylinders
  Units = cylinders of 16065 * 512 bytes
  
  Device Flag Start End Blocks Id System
  /dev/sdb1 0 12 96390 83 Linux native
  /dev/sdb2 12 134 979965 fd Linux raid autodetect
  /dev/sdb3 0 8922 71665965 5 Whole disk
  /dev/sdb4 305 8922 69216052+ fd Linux raid autodetect
  /dev/sdb5 134 305 1373557+ fd Linux raid autodetect

on each disk sda1 and sdb1 are copies of the boot partition (silo hates mirrored disks, I'm convinced of it!), so they are ext2 filesystems, I just dd /dev/sda1 to /dev/sdb1 if I change kernels or update silo.

/dev/sda5 and /dev/sdb5 are the two parts for /dev/md1 ( / )

/dev/sda2 and /dev/sdb2 are the two parts for /dev/md2 (swap); I'm using an old Ultra 60 with 2 72G 10k RPM drives, which are prone to breakage - I hate my system to crash just because a disk dies...

/dev/sda4 and /dev/sdb4 are the two parts for /dev/md4 (lvm); this is then broken down into

• LV VG Attr LSize Origin Snap% Move Log Copy%
  distfiles rootvg -wi-ao 4.00G
  home rootvg -wi-ao 10.00G
  opt rootvg -wi-ao 4.00G
  portage rootvg -wi-ao 2.00G
  tmp rootvg -wi-a- 2.00G
  usr rootvg -wi-ao 8.00G
  var rootvg -wi-ao 4.00G
  vartmp rootvg -wi-ao 6.00G

then mounted as:

• Filesystem Size Used Avail Use% Mounted on
  /dev/md/1 1.4G 141M 1.2G 11% /
  udev 11M 295k 11M 3% /dev
  /dev/sda1 96M 5.9M 85M 7% /boot
  /dev/mapper/rootvg-usr
  8.5G 2.4G 5.8G 29% /usr
  /dev/mapper/rootvg-portage
  2.2G 279M 1.8G 14% /usr/portage
  /dev/mapper/rootvg-distfiles
  4.3G 700M 3.4G 18% /usr/portage/distfiles
  /dev/mapper/rootvg-home
  11G 173M 9.9G 2% /home
  /dev/mapper/rootvg-opt
  4.3G 143M 3.9G 4% /opt
  /dev/mapper/rootvg-var
  4.3G 329M 3.7G 9% /var
  /dev/mapper/rootvg-vartmp
  6.4G 13M 6.1G 1% /var/tmp
  shm 1.1G 0 1.1G 0% /dev/shm