No free storage watermark for the static delta specific storage availability check

[mike-sul]

It appears that there is no free storage watermark for the static delta specific storage availability check, unlike in the regular case when the min-free-space-size and min-free-space-percent is taken into account."

Furthermore, the check occurs after the async pull routines are triggered, while the available free storage is obtained before the routines start. This combination, along with the absence of a watermark, could potentially lead to disk overfilling.

[cgwalters]

Yep, this is a missing feature for sure.