Date: Fri, 15 Nov 2013 17:16:58 -0700 (MST) From: Warren Block <wblock@wonkity.com> To: aurfalien <aurfalien@gmail.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: gpart, to -a 4k or to -b 1M Message-ID: <alpine.BSF.2.00.1311151712370.36506@wonkity.com> In-Reply-To: <A0427786-1BF3-47CB-9924-7B568BA5A950@gmail.com> References: <A0427786-1BF3-47CB-9924-7B568BA5A950@gmail.com>
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On Fri, 15 Nov 2013, aurfalien wrote: > Hi, > > Curious, for best practice in ensuring 4K alignment, should one do; > > gpart add ... -b 1M > > or > > gpart add ... -a 4k > > Thank in advance, They do different things. '-b 1M' starts the added partition at 1M but does not force it to be a multiple of 4K in size. '-a 4k' forces the added partition to start at the next 4K-aligned block, and forces the size to be a multiple of 4K. I recommend both for the first filesystem partition, and '-a 4k' for later ones.
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