Date: Fri, 3 Dec 2010 15:00:45 -0600 From: Brooks Davis <brooks@freebsd.org> To: Peter Ankerst?l <peter@pean.org> Cc: freebsd-fs@freebsd.org, Bartosz Stec <admin@obsysa.net> Subject: Re: zfs snapshots. Message-ID: <20101203210045.GB7429@lor.one-eyed-alien.net> In-Reply-To: <E629A6C6-2784-41B5-9979-A407464C52F0@pean.org> References: <4CF017C8-9D3C-483D-B508-5BF70E32AA14@pean.org> <4CF949B0.5060405@obsysa.net> <E629A6C6-2784-41B5-9979-A407464C52F0@pean.org>
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--IrhDeMKUP4DT/M7F Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Dec 03, 2010 at 08:51:02PM +0100, Peter Ankerst?l wrote: >=20 >=20 > > On 2010-12-03 20:40, Peter Ankerst?l wrote: > >> Is there a way to take a snapshot without using space from the parent = filesystem? > >>=20 > > 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). > > 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) You many be able to use the refquota attribute instead of quota unless you're trying to place quotas on filesystem hiearchies. -- Brooks --IrhDeMKUP4DT/M7F Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iD8DBQFM+Vp9XY6L6fI4GtQRAheCAJ9qYdVMCpFlVCtMWmsutavK6749RwCfZfaS Rd8ldPXj+uL8wBm5Xf+sP2k= =4fLO -----END PGP SIGNATURE----- --IrhDeMKUP4DT/M7F--
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