tmpfs is zero bytes (no free space), maybe a zfs bug?

[Attila Nagy]

Hi,

I first noticed this problem on machines with more memory (32GB eg.), 
but now it happens on 4G machines too:
tmpfs                                       0B      0B      0B   100%    
/tmp
FreeBSD builder 8.2-PRERELEASE FreeBSD 8.2-PRERELEASE #0: Sat Jan  8 
22:11:54 CET 2011

Maybe it's related, that I use zfs on these machines...

Sometimes it grows and shrinks, but generally there is no space even for 
a small file, or a socket to create.