(In reply to BT from comment #8)
> (In reply to Daniel Pielmeier from comment #7)
> > Do you have /var on a different partition? Maybe this is causing the write
> > errors as the filesystem is not mounted when trying to write there.
>
> No it's not on a separate partition. From what I can gather, root is mounted
> read-only at that point in boot process.
(In reply to BT from comment #8)
> (In reply to Daniel Pielmeier from comment #7)
> > Do you have /var on a different partition? Maybe this is causing the write
> > errors as the filesystem is not mounted when trying to write there.
>
> No it's not on a separate partition. From what I can gather, root is mounted
> read-only at that point in boot process.
Well then /dev/null or /run makes sense.