Date: Fri, 3 Dec 2010 20:51:02 +0100 From: =?iso-8859-1?Q?Peter_Ankerst=E5l?= <peter@pean.org> To: Bartosz Stec <admin@obsysa.net> Cc: freebsd-fs@freebsd.org Subject: Re: zfs snapshots. Message-ID: <E629A6C6-2784-41B5-9979-A407464C52F0@pean.org> In-Reply-To: <4CF949B0.5060405@obsysa.net> References: <4CF017C8-9D3C-483D-B508-5BF70E32AA14@pean.org> <4CF949B0.5060405@obsysa.net>
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> 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@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)
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