Setup-Storage: how to specify multiple btrfs subvolumes?

[Kerim Gueney]

I think your configuration was slightly wrong.

I am not entirely sure, but it should be:
--------------------------------------------------------------------------------------------------
disk_config disk1 preserve_always:2 disklabel:msdos bootable:1 
fstabkey:uuid

primary -       10G-30G -       -
primary /some/other/partition 100-50%  ext4 rw,noatime,nosuid,nodev

disk_config btrfs
btrfs raid1             /       disk1.1 subvol=@root
---------------------------------------------------------------------------------------------------

The "preserve" flag has to go on the disk_config disk* line, as well. It 
takes the partition number as argument.

Note I changed raid1 to single. I was not completely right in my last 
email, it seems a single device MUST use "single" for data, after all. I 
guess that makes sense, because for raid1 you need at least two devices.

However, I noticed that it still doesn't work. There is a bug in the 
code. I wrote a patch and will submit it later; I can also send it to 
you, because Thomas is in New Zealand and I am not sure how quickly 
he'll be able to implement it and so on. I tested your configuration 
with the patch and it worked in my test runs.

Best regards
Kerim





On 16.01.2015 13:12, Urs Ganse wrote:
> However, with the following configuration:
>
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> disk_config disk1 disklabel:msdos bootable:1 fstabkey:uuid
>
> primary -       10G-30G -       -
> primary /some/other/partition 100-50%:preserve_always ext4 
> rw,noatime,nosuid,nodev
>
> disk_config btrfs
> btrfs raid1             /       disk1.1 subvol=@root
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
>
> the installation aborts with the error:
>
> Cannot satisfy pre-depends for mkfs.btrfs -d raid1  /dev/sda1: 
> pt_complete_/dev/vdd -- system left untouched.
> Error in task partition. Code: 710
>
> //Urs