cap cache-ssds usage on zfs

[Robert Schulze]

Hi there,

is there a way to limit the amount of space which is used on cache 
devices in ZFS? I mean, without doing partitioning or such.

The reason for this to do is that GC on most SSDs will fail when the 
cache-SSDs are full (which is the case in our configuration: 7M free of 
75 GB).

with kind regards,
Robert Schulze