Date: Sat, 14 Jul 2018 20:12:21 +0200 From: Per olof Ljungmark <peo@nethead.se> To: Ian Lepore <ian@freebsd.org>, freebsd-arm@freebsd.org Subject: Re: add swap on a rpi3 Message-ID: <8e8f3af9-6b82-2742-3003-47cfef4f5384@nethead.se> In-Reply-To: <1531590103.21781.10.camel@freebsd.org> References: <cba281c2-4175-803e-43c7-c9bb10f6fead@nethead.se> <1531590103.21781.10.camel@freebsd.org>
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On 07/14/18 19:41, Ian Lepore wrote: > On Sat, 2018-07-14 at 19:28 +0200, Per olof Ljungmark wrote: >> 12.0-CURRENT #0 r336134 arm64 GENERIC on a rpi3 Cortex-A53 >> >> Can I add a swap "partition" somewhere below? I am booting from the >> SD >> card and run the system from an attached USB disk. >> >> As I understand it, I cannot create a freebsd-swap partition/slice >> with >> the BSD/MBR scheme, but is there another way to create a reasonably >> large swap (>1G) under ARM? >> >> => 63 31116225 mmcsd0 MBR (15G) >> 63 2016 - free - (1.0M) >> 2079 102312 1 fat32lba [active] (50M) >> 104391 31008825 2 freebsd (15G) >> 31113216 3072 - free - (1.5M) >> >> => 0 31008825 mmcsd0s2 BSD (15G) >> 0 57 - free - (29K) >> 57 31008768 1 freebsd-ufs (15G) >> >> => 63 125045361 da0 MBR (60G) >> 63 2016 - free - (1.0M) >> 2079 102312 1 fat32lba [active] (50M) >> 104391 83884089 2 freebsd (40G) >> 83988480 41056944 - free - (20G) >> >> => 0 83884089 da0s2 BSD (40G) >> 0 57 - free - (29K) >> 57 83884032 1 freebsd-ufs (40G) >> >> > > Looks like you've got some free space is on da0, so: > > gpart add -t freebsd -s <slicesize> -i 3 da0 > gpart create -s bsd da0s3 > gpart add -t freebsd-swap -s <swapsize> -i 2 da0s3 > > Now you have a swap parition at da0s3b (-i 2/partition b is sort of > traditional for freebsd swap partitions, but there's no real need for > it to be so). > > You can make the size of da0s3 bigger than 1g, and then carve out just > 1g of it for swap, leaving space to add ufs partitions in that slice > later if you want. Thank you for the quick answer! I had missed "gpart create -s bsd" part. Just one more question, why "-i 2" here: gpart add -t freebsd-swap -s <swapsize> -i 2 da0s3 Could not as well be "-i 1" ?
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