zfs snapshots.

[Peter Ankerstål]

> On 2010-12-03 20:40, Peter Ankerstål wrote:
>> Is there a way to take a snapshot without using space from the parent filesystem?
>> 
>> --
>> Peter Ankerstål
>> peter at pean.org
>> http://www.pean.org/
>> 
> AFAIK snapshot doesn't take any space as long as filesystem hasn't changed from the time when snapshot was taken.
> For instance - If you take snapshot on filesystem and after that, 10MB file is deleted, snapshot is using only 10MB space from (because it's only difference between snapshot and actual filesystem).
> 
> --
> Bartosz Stec
> 
Yes, this is correct. But it still uses up 10MB from the parent filesystem. This is a problem if you use both snapshots and quotas. (and use alot of snapshots)