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

[hmsjwzb <hmsjwzb@zoho.com>]

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.

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?