Date: Thu, 04 Jul 2013 07:28:28 +1200 From: Berend de Boer <berend@pobox.com> To: Daniel Kalchev <daniel@digsys.bg> Cc: freebsd-fs@freebsd.org Subject: Re: EBS snapshot backups from a FreeBSD zfs file system: zpool freeze? Message-ID: <87obaj4f4z.wl%berend@pobox.com> In-Reply-To: <51D42069.5060409@digsys.bg> References: <87li5o5tz2.wl%berend@pobox.com> <CA%2BtpaK1jQuKneQsxkVfxJGzXdPdLZfqBM1QWQ0e19nK5t71t1Q@mail.gmail.com> <87ehbg5raq.wl%berend@pobox.com> <20130703055047.GA54853@icarus.home.lan> <6488DECC-2455-4E92-B432-C39490D18484@dragondata.com> <CADBaqmihCB5JP01hLwXTWHoZiJJ5-jkT-Ro=oDwOcKZT_zvEKA@mail.gmail.com> <A5A66641-5EF9-454E-A767-009480EE404E@dragondata.com> <14A2336A-969C-4A13-9EFA-C0C42A12039F@hostpoint.ch> <87zju43sxl.wl%berend@pobox.com> <FF386ED5-5E9D-4073-9E67-F835BCF5D816@hostpoint.ch> <87ppuz51os.wl%berend@pobox.com> <51D42069.5060409@digsys.bg>
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>>>>> "Daniel" == Daniel Kalchev <daniel@digsys.bg> writes:
Daniel> It seems, Amazon uses some sort of ZFS (volume) snapshots
Daniel> in order to implement the functionality of EBS. Why it
Daniel> would take hours to complete is hard to understand,
It all depends on how big your disks are :-)
First snapshot takes longer, then they take differences. Perhaps 1TB
takes 20 minutes or so? But diffs are much faster, usually 2 minutes
or so.
--
All the best,
Berend de Boer
------------------------------------------------------
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