Re: [PATCH v2] btrfs-progs: chunk tree search solution for btrfs249

[Qu Wenruo <quwenruo.btrfs@gmx.com>]

On 2022/8/16 10:40, hmsjwzb wrote:
> Hi Qu,
>
> IMO, for btrfs249
>
> mkfs.btrfs -d raid1 -m raid1 /dev/sdb /dev/sdc
>
> btrfstune -S 1 /dev/sdb
>
> wipefs -a /dev/sdb
>
> mount -o degraded /dev/sdc /mnt/scratch
>
> btrfs device add -f /dev/sdd /mnt/scratch
>
> After the above command, the sdb(missing deive) and sdc went to seed_list.
> So the missing device will not show by btrfs filesystem usage command.
>
> Fsid of sdb & sdc also changed in above command. Before this command,
> btrfs filesystem usage can dump out the device information of sdb & sdc.
> After that, only sdd will dump out.
>
> I think this behavior is proper.

My bad, I forgot it's fi usage, which only makes sense for RW devices.

So please discard my comment on that part.

Thanks,
Qu
>
> Thanks,
> Flint
>
> On 8/15/22 04:06, Qu Wenruo wrote:
>> This will only load the device info for rw devices.
>>
>> But no seed device will be populated, wouldn't this cause problem
>> showing missing seed devices?