Date: Mon, 13 Oct 2014 11:48:29 -0700 From: Darren Pilgrim <list_freebsd@bluerosetech.com> To: karl@denninger.net Cc: freebsd-stable@freebsd.org Subject: Re: getting to 4K disk blocks in ZFS Message-ID: <543C1E7D.1000301@bluerosetech.com> In-Reply-To: <20140911072351.GA50786@anubis.morrow.me.uk> References: <540FF3C4.6010305@ish.com.au> <54100258.2000505@freebsd.org> <5410F0B4.9040808@ish.com.au> <A0A549F7A4094F519A3660697AB4983F@multiplay.co.uk> <54114029.3060507@FreeBSD.org> <20140911072351.GA50786@anubis.morrow.me.uk>
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On 9/11/2014 12:23 AM, Ben Morrow wrote: > Is there any way (short of building a new pool) to get a reasonable idea > of how much extra space a given pool would use if converted? Take the average file size modulo 4096, round it up to a multiple of 512, subtract that from 4096, then multiply by the number of files in the data set.
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