Date: Sat, 8 Jan 2011 09:14:19 +0000 From: Josef Karthauser <joe@tao.org.uk> To: Artem Belevich <fbsdlist@src.cx> Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>, "Matthew D. Fuller" <fullermd@over-yonder.net>, Daniel Kalchev <daniel@digsys.bg> Subject: Re: ZFS - moving from a zraid1 to zraid2 pool with 1.5tb disks Message-ID: <2E0FDC35-B6E3-49C7-A55B-B1B08FFBF1DB@tao.org.uk> In-Reply-To: <AANLkTikruuP5h7HuEkPSR6QRMFjtCT0YQoHsDRsvBpty@mail.gmail.com> References: <ifsia5$5ub$2@dough.gmane.org> <4D21E679.80002@my.gd> <84882169-0461-480F-8B4C-58E794BCC8E6@my.gd> <BEBC15BA440AB24484C067A3A9D38D7E0149F32D13E3@server7.acsi.ca> <488AE93A-97B9-4F01-AD0A-0098E4B329C3@my.gd> <AANLkTimezasVY%2BMJjWn2T9sBGQV-JrNmYqRwv_gPYPJP@mail.gmail.com> <CC37553B-EE13-4B5B-AC87-80D0ECC1A2B3@my.gd> <BEBC15BA440AB24484C067A3A9D38D7E0149F32D33F9@server7.acsi.ca> <4D25BF91.7070304@my.gd> <4D25C760.4070703@digsys.bg> <20110107111635.GL28453@over-yonder.net> <AANLkTikruuP5h7HuEkPSR6QRMFjtCT0YQoHsDRsvBpty@mail.gmail.com>
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On 7 Jan 2011, at 17:30, Artem Belevich <fbsdlist@src.cx> wrote: > One way to get specific ratio for *your* pool would be to collect > record size statistics from your pool using "zdb -L -b <pool>" and > then calculate L2ARC:ARC ratio based on average record size. I'm not > sure, though whether L2ARC stores records in compressed or > uncompressed form. Can someone point me to a reference describing the various zfs caches availa= ble? What's the arc and zil? Ive been running some zfs for a few years now, a= nd must have missed thus entire subject :/. Joe=
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