Date: Fri, 22 Jul 2011 06:51:00 +1000 From: Peter Jeremy <peterjeremy@acm.org> To: "Vladislav V. Prodan" <universite@ukr.net> Cc: fs@freebsd.org Subject: Re: [ZFS] Prompt, which is lost space in the ZFS pool? Message-ID: <20110721205100.GA72403@server.vk2pj.dyndns.org> In-Reply-To: <4E25F1C0.6060404@ukr.net> References: <4E2412C2.5000202@ukr.net> <CAFqOu6gfJ__6UkXBGxyUVv-Tf=M%2BL1XSKmYCoPiNxaJ3-8tNMA@mail.gmail.com> <4E249FAF.4050500@ukr.net> <CAFqOu6gOP1KfrX_VVsYv0t%2BeXYMoxqKn5KpDz7pgMaSMuHpycQ@mail.gmail.com> <4E25F1C0.6060404@ukr.net>
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[-- Attachment #1 --] On 2011-Jul-20 00:06:08 +0300, "Vladislav V. Prodan" <universite@ukr.net> wrote: >Now rewriting the hierarchy /backup with the option dedup=on to ZFSv28 >May be can save some space. I strongly suggest you do some reading up on the impact of dedup and perform extensive testing before enabling dedup. ZFS dedup places very high demands on RAM and can cause significant degradation of write and delete operations. At this point in time, it's probably only of use in very specific cases. -- Peter Jeremy [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (FreeBSD) iEYEARECAAYFAk4okTQACgkQ/opHv/APuIcfygCfboQ2OOdQw/4LTEgNhhWEkEp6 lUQAnioh6e9hkdl2BZtnbXfKDg5WUCqf =ArFt -----END PGP SIGNATURE-----
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