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slitaz rolling can't boot on btrfs file system

(4 posts) (2 voices)

• Started 5 years ago by douarn
• Latest reply from douarn
• This topic is resolved

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1. 

   douarn
   

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   Member

   Hi
   I installed slitaz on usb dongle btrfs formated. Installation went fine, I modify fstab and menu.list as require to allow grub to boot. Unfortunately, grub seem to be unable to recognize the file system (error 17). I tried to solve the problem by chrooting and reinstalling grub (grub-install) without success. grub-install give me a "Could not find device for /boot: Not found or not a block device." message.
   As installing slitaz on the same usb dongle ext4 formated worked very well, I can say btrfs is the problem.

   Please, Is it possible to use a slitaz on a btrfs file system?

   (sorry for my bad english)

   Posted 5 years ago #
2. 

   mojo
   

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   Key Master

   Did you manually install grub2 that supports btrfs to the flash drive?
   I doubt the boot loader grub4dos on the slitaz live iso's supports btrfs.

   Posted 5 years ago #
3. 

   douarn
   

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   Member

   Hi mojo, thank you
   You're right, grub2 is the solution. Maybe the procedure would be helpfull to others :

   1. boot a live slitaz rolling, install slitaz on my btrfs formated flash drive without a boot loader (grub4dos)
   2. mount my btrfs flash drive : # mount -o subvol=/,subvolid=5 /dev/sdb1 /mnt
   3. copy over the DNS details to use an internet in the chroot environment :
   # cp /etc/resolv.conf /mnt/etc/resolv.conf
   4. mount everything needed by a chroot environment :
   # for i in dev dev/pts sys proc run; do sudo mount --bind /$i mnt/$i; done
   5. chroot in my flash drive : # chroot /mnt and test internet # ping http://www.google.com
   6. recharge slitaz database : # tazpkg recharge
   7. get grub2 from slitaz : # tazpkg -gi grub2
   8. install grub2 on the flash drive : # grub-mkconfig -o boot/grub/grub.cfg and # grub-install /dev/sdb
   9. install btrfs in my chroot environment : # tazpkg -gi btrfs-libs btrfs-progs btrfs-mkfs
   10. add a line in fstab : UUID=blablabla / btrfs ssd,noatime,compress=lzo,space_cache 0 1 too avoid kernel panic trying to find a root

   Posted 5 years ago #
4. 

   douarn
   

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   Member

   Sorry, I made mistake in my last post. Please, would it be possible to delete it and consider this the error-free (hopefully) process description instead ?

   Grub2 is the key to install and boot a slitaz rolling on a btrfs root filesystem. Hope the following procedure would be helpfull to you :

   1. boot a live slitaz rolling, install slitaz on a btrfs formated flash drive without boot loader
   2. don't reboot slitaz, instead mount the btrfs-formated flash drive :
   # mount /dev/sdb1 /mnt
   3. copy over the DNS details to use an internet in the chroot environment :
   # cp /etc/resolv.conf /mnt/etc/resolv.conf
   4. mount everything needed by a chroot environment :
   # for i in dev dev/pts sys proc run; do mount --bind /$i mnt/$i; done
   5. chroot in btrfs-formated flash drive :
   # chroot /mnt
   then test internet :
   # ping http://www.google.com
   6. If everything is OK, you can recharge slitaz database :
   # tazpkg recharge
   7. get and install grub2 from slitaz depots :
   # tazpkg -gi grub2
   8. install grub2 on the flash drive :
   # grub-mkconfig -o boot/grub/grub.cfg
   # grub-install /dev/sdb
   9. install btrfs in the chroot environment :
   # tazpkg -gi btrfs-libs btrfs-progs btrfs-mkfs
   10. add the following line in fstab of your chrooted environment :
   UUID=blablabla / btrfs rw,relatime,compress=lzo,space_cache 0 1
   # nano /etc/fstab
   11. in /etc/boot/grub.conf, change each occurence of hd1 to hd0 and each occurence of sdb1 to sda1
   # nano /etc/boot/grub.cfg
   12. you can now boot your brand new slitaz on a btrfs-formated flash drive :-)

   Posted 5 years ago #

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