Hi,

elaexuotee--- via Bug reports for GNU Guix <bug-guix@gnu.org> skribis:

> When using --expose to mirror a path between host and guest, the guest mirror
> fails to reflect file modifications from the host. However, file creation and
> deletion are correctly propogated.
>
> To pick up file modifications in the guest, it is sufficient to remount
> mirroring 9p filesystem.
>
> Is this behaviour expected?

I believe this comes from the “cache=loose” 9p mount option added in
commit e0d96774dd48c29ccc4c90fea1f8f71850ab0879.

Does the patch below help?

Chris, what do you think?  How would this affect the performance issues
that led to e0d96774dd48c29ccc4c90fea1f8f71850ab0879?

Thanks,
Ludo’.