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RE: [alpine-devel] Re: [acf] How to install alpine on btrfs

From: Natanael Copa <>
Date: Tue, 01 Mar 2011 13:11:29 +0100

 On Tue, 1 Mar 2011 04:33:29 +0100, Wei Liang(David) wrote:

> Hi Natanael,
> Thank you very much for the message.
> What I just did is to install the btrfs-progs-0.19-r0.apk downloaded
> from " [1]" ,format
> my
> partition as btrfs and mount it under /mnt. I did do this "
> echo "kernel/fs/btrfs" > /etc/mkinitfs/modules.d/btrfs
> # add btrfs to features in /etc/mkinitfs/mkinitfs.conf
> ".
> But when I type "setup-disk /mnt" ,I got " btrfs is not supported.
> Only
> ext2 and ext3 are supported". Does it mean that I need to update some
> package?
> Thank you very much again!

 Yes. you will need alpine-conf-2.6 (which is not yet released). You can
 easily grab it from git though:


 sh /mnt

 That said, I also found out that the crc32c kernel module needs to be
 in the initramfs module. I think its not a dependency due to there are 2
 ifferent crc32c modules (crc32c and crc32c-intel) where -intel variant
 is available when sse4 is enabled.

 So to conclude:

 # boot up 2.1.4 iso

 # config basics

 # add edge repos
 echo "" >
 echo "" >

 # upgrade (you might need do an apk-tools workaround which I skip here)
 apk update
 apk upgrade

 # install needed tools. mkinitfs is for our config modification
 apk add mkinitfs e2fsprogs btrfs-progs

 # add btrfs modules to mkinitfs + needed crc32c
 echo "kernel/crypto/crc32c*" > /etc/mkinitfs/modules.d/btrfs
 echo "kernel/fs/btrfs" >> /etc/mkinitfs/modules.d/btrfs

 # create partitions (mark sda1 as bootable)
 # in this example I have sda1=/boot, sda2=swap and sda3=/
 fdisk /dev/sda

 # create filesystems
 mkfs.ext3 /dev/sda1
 mkswap /dev/sda2
 mkfs.btrfs /dev/sda3

 # mount filesystems
 mount -t btrfs /dev/sda3 /mnt
 mkdir /mnt/boot
 mount -t ext3 /mnt/boot

 # get latest setup-disk from git:

 # install system on mounted /mnt
 sh -v /mnt

 # umount and reboot. remove cdrom
 umount /mnt/boot /mnt

 I will add btrfs support to mkinitfs and release alpine-conf (with the
 mentioned setup-disk) asap.

 btw, I think putting / on lvm should work too.



Received on Tue Mar 01 2011 - 13:11:29 UTC