mount -o remount -o rw / regression ?

[Jason Curl]

Engelmayer Christian wrote:
> Hello,
>
> I have a use case where a file system partition gets
> mounted read-only and a daemon is started from that
> partition. At some times it is necessary to have that
> partition read-writeable to update some files on it.
>
> Under BusyBox 1.2.2 one could simply change the file
> systems flags to 'rw' by issuing
>
>    'mount -o remount -o rw /mnt/myMountPoint'
>   
For debugging yesterday I never had an issue with BB 1.12.1

mount -oremount,rw /


> Since I upgraded to Busybox release 1.11.3 the same
> scenario fails with 'Device or resource busy', as if
> it was tried to unmount and mount the partition again,
> which is not possible as the mentioned daemon is still
> running.
>
> Is this a desired change in the behavior or a regression?
>
> Regards,
> Christian
>