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Re: [Libreboot] ERROR: device '/dev/matrix/root' not found. Skipping fsc


From: Michael Bohn
Subject: Re: [Libreboot] ERROR: device '/dev/matrix/root' not found. Skipping fsck
Date: Fri, 6 May 2016 17:36:10 +0200

I use UUID ( see fstab ) may be ist a lvm problem because  at the 




[rootfs ]# ls  /dev/*
/dev/mcelog



address@hidden ~ # lvdisplay
  --- Logical volume ---
  LV Path                /dev/matrix/swapvol
  LV Name                swapvol
  VG Name                matrix
  LV UUID                9N3M0R-7v2I-9WLy-d7aN-5XiY-1rAw-WQ8YYt
  LV Write Access        read/write
  LV Creation host, time parabolaiso, 2016-05-02 00:52:34 +0000
  LV Status              available
  # open                 0
  LV Size                8.00 GiB
  Current LE             2048
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:2
   
  --- Logical volume ---
  LV Path                /dev/matrix/root
  LV Name                root
  VG Name                matrix
  LV UUID                FU487N-719J-rJGp-hH1p-sDC3-Xooz-ghzMyO
  LV Write Access        read/write
  LV Creation host, time parabolaiso, address@hidden ~ # lvdisplay
  --- Logical volume ---
  LV Path                /dev/matrix/swapvol
  LV Name                swapvol
  VG Name                matrix
  LV UUID                9N3M0R-7v2I-9WLy-d7aN-5XiY-1rAw-WQ8YYt
  LV Write Access        read/write
  LV Creation host, time parabolaiso, 2016-05-02 00:52:34 +0000
  LV Status              available
  # open                 0
  LV Size                8.00 GiB
  Current LE             2048
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:2


grub> cryptomount -a
grub> set root='lvm/matrix-root'
grub> linux /boot/vmlinuz-linux-libre-lts root=/dev/matrix/root cryptdevice=/dev/sda1:root
grub> initrd /boot/initramfs-linux-libre-lts.img
grub> boot

address@hidden ~ # cat /mnt/etc/fstab 
# /etc/fstab: static file system information
#
# <file system> <dir> <type> <options> <dump> <pass>
# /dev/mapper/matrix-root
UUID=c059559b-682a-44ed-b81f-902dc39ec3fe /         ext4       rw,relatime,data="" class="" style="white-space:pre"> 0 1

# /dev/mapper/matrix-swapvol
UUID=e59285f7-a291-49f2-8b29-6385752ed228 none       swap       defaults   0 0


2016-05-06 17:14 GMT+02:00 Daniel Tarrero <address@hidden>:
have you used UUIDs or labels when "Configure the system"?
in the past, use of UUIDs in the place of labels has solved similar
problems (locating the drives).

There seem to be some glitches with hardware ordering, and f.e. docking
and undocking the laptop causes the drives to change its label (making
boot loader unable to locate drive). With the use of UUIDs this dont
happen (UUIDs doesnt change regardless you move or change hardware).

Let us know if that solves the problem.

Regards,
D



On Fri, May 06, 2016 at 04:34:10PM +0200, Michael Bohn wrote:
> Hy All,
> if I follow the howto "Installing Parabola GNU/Linux with full disk
> encryption" at
https://libreboot.org/docs/gnulinux/encrypted_parabola.html I 'm unable to
> boot the system.
>
> Waiting 10 seconds for device /dev/matrix/root
> ERROR: device '/dev/matrix/root' not found. Skipping fsck
> ERROR: Unable to find root device '/dev/matrix/root'
>
>
> Did body knows  what's the reason for this error ?
>
>
> Michael



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