Re: Can't remove device -> I/O error

[DocMAX <docmax1978@gmail.com>]

Thanks for the reply.

I don't want to replace the drive. I want to remove.

Also tried in degraded mode. I get the exact same error.

I'm not sure but i think i formated the drive on Kernel 4.11.

I am on Kernel 4.13 now.


I have the bad feeling that i will never get rid of that small drive 
unless i re-format.



Am 29.09.2017 um 23:04 schrieb Goffredo Baroncelli:
> On 09/29/2017 10:00 PM, Dirk Diggler wrote:
>> Hi,
>>
>> is there any chance to get my device removed?
> I simulated a device removing in KVM with
>
> 	echo 1 >/sys/block/sdj/device/delete
>
> then
>
> 	btrfs dev del 6 /mnt/....
>
>
> And I got success. But I am not sure if this is the right thing todo.
>
> You can use "btrfs replace start -r ....". But you need another device.
>
> Otherwise, you can shutdown the filesystem, removing (physically) the disk then remount with a "mount -o degraded ...." followed by a "btrfs dev del missing /..."
> Before doing so, please tell us which kernel you are using.
>
> RAID5/6 until few months ago has a lot of bugs, so if you have an old kernel it is very difficult to remove a device with success.
>