A number, the word
unlimited, or the word
size_spec requests unlimited use, or the maximum available amount. A
default size_spec uses the limit that was in force when the server was started.
number can optionally be followed by a scaling factor:
k for kilobytes,
m for megabytes, and
g for gigabytes, which scale by 1024, 1024*1024, and 1024*1024*1024 respectively.
The value must be representable as a 64-bit unsigned integer (0 to 18446744073709551615, inclusive). Using
unlimited is the best way to safely set a really large number.