Re: ERROR: error removing the device '/dev/sdXN' - Inappropriate ioctl for device

[Martin <m_btrfs@ml1.co.uk>]

On 01/04/15 08:06, Anand Jain wrote:
> 
>>>> btrfs device delete /dev/sdf5 /mnt/data2
>>>>
>>>> ERROR: error removing the device '/dev/sdf5' - Inappropriate ioctl for
>>>> device
> 
>  very strange. 'btrfs fi show -m' shows btrfs fs(s) that are mounted.

Looks like my /dev/sdf isn't responding with anything useful at all... A
firmware crash?... (This is for a 256GB SSD.)


# btrfs fi show -m

[...]

Label: 'btrfs_data2'  uuid: 3aaee716-b98b-4c86-ba5a-53456994f152
        Total devices 3 FS bytes used 159.31GiB
        devid    1 size 206.47GiB used 206.02GiB path /dev/sdb5
        devid    2 size 206.47GiB used 206.47GiB path /dev/sdd5
        devid    3 size 206.47GiB used 206.47GiB path /dev/sdf5


btrfs-progs v3.19.1



# smartctl -i /dev/sdf
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.14.10-gentoo_s03a_11]
(local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Vendor:               /7:0:0:0
Product:
Compliance:           SPC-5
User Capacity:        600,332,565,813,390,450 bytes [600 PB]
Logical block size:   774843950 bytes
scsiModePageOffset: response length too short, resp_len=47 offset=50
bd_len=46
scsiModePageOffset: response length too short, resp_len=47 offset=50
bd_len=46
>> Terminate command early due to bad response to IEC mode page
A mandatory SMART command failed: exiting. To continue, add one or more
'-T permissive' options.



And btrfs is still running ok so far... I'll be swapping that device at
the weekend. (First chance I have for a Sunday shutdown. :-( )


Still... For administering btrfs, it is a little disturbing not to be
able to remove/delete a device unless that device is both mounted and
working...

Or is that where the "missing" option comes in?



Comments welcomed,

Thanks,
Martin