On 28/03/2019 12:32, Martin Gregorie wrote:
> On Thu, 28 Mar 2019 00:56:36 +0000, Martin Gregorie wrote:
>
>> On Wed, 27 Mar 2019 19:46:42 +0000, Richard Kettlewell wrote:
>>
>>> Does it not work?
>>>
>>
> No, it does not.
>
> The manual says that labels can be used equivalently to /dev/sdn or UUIDs,
> but while
>
> usb_label="USB_SNAPSHOT"
> usb_disk="/media/snapshot"
> sudo mount -t ext4 -L "$usb_label" "$usb_disk"
>
> works correctly
>
> sudo fsck -n $usb_label

sudo fsck -N LABEL=$usb_label

Note: capital N and LABEL=
At least, that worked on one of my systems.

To continue:

umount LABEL=$usb_label
fsck LABEL=$usb_label

>
> outputs an "Emergency help:" message listing the fsck options etc and
>
> sudo fsck.ext4 -n $usb_label
>
> outputs the error
>
> e2fsck 1.44.2 (14-May-2018)
> fsck.ext4: No such file or directory while trying to open USB_SNAPSHOT
> Possibly non-existent device?
>
> I've opened a bug report and in the meanwhile am using
>
> readlink -e $usb_label
>
> to get the device name.
>
>



--

Chris Elvidge, England

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