Thanks, applied as 96e952f118896288343003866c02384f09e7a28b.

Michael

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On Mon, 17 Aug 2020 08:18:24 +0200, Robert Schwebel <[email protected]> 
wrote:
> We have seen that, if the first boot runs under a testsuite that powers
> the board off after rc-once is finished, data hasn't found its way to
> the medium. This has been observed to result in an empty ssh key.
> 
> Adding a sync helps.
> 
> Signed-off-by: Robert Schwebel <[email protected]>
> Message-Id: <[email protected]>
> Signed-off-by: Michael Olbrich <[email protected]>
> 
> diff --git a/projectroot/usr/lib/systemd/systemd-rc-once 
> b/projectroot/usr/lib/systemd/systemd-rc-once
> index e14936e40b03..db3d84e3c342 100644
> --- a/projectroot/usr/lib/systemd/systemd-rc-once
> +++ b/projectroot/usr/lib/systemd/systemd-rc-once
> @@ -21,6 +21,8 @@ start() {
>  }
>  
>  umount() {
> +     # make sure rc-once generated data makes it to the medium
> +     sync
>       if ! mount_root_restore; then
>               # remounting rw/ro during the second boot will flush anything
>               # left in the filesystem journal

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