Date: Thu, 29 Dec 2016 13:08:06 +0100 From: Polytropon <freebsd@edvax.de> To: Stari Karp <starikarp@yandex.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: swap partition Message-ID: <20161229130806.914b65a1.freebsd@edvax.de> In-Reply-To: <1483012420.95172.9.camel@yandex.com> References: <1483012420.95172.9.camel@yandex.com>
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On Thu, 29 Dec 2016 06:53:40 -0500, Stari Karp wrote: > I like to increase swap partition but I am scary to screw up my system. > FreeBSD is installed on iMac (Mountain Lion). > > gpart show > => 34 1953525101 ada0 GPT (932G) > 34 6 - free - (3.0K) > 40 409600 1 efi (200M) > 409640 1216587112 2 apple-hfs (580G) > 1216996752 1269536 3 apple-boot (620M) > 1218266288 1024 4 freebsd-boot (512K) > 1218267312 727710720 5 freebsd-ufs (347G) > 1945978032 7547102 6 freebsd-swap (3.6G) > 1953525134 1 - free - (512B) > > What I planning to do: > Boot to OS X and than decrease apple-hfs partition for 64 GB. > Than boot to FreeBSD (single user) and: > swapoff -a > gpart resize -i6 ada0 > swapon -a > > Do I need to use gpart resize -i6 -s 64G ada0 or gpart will find empty > space and use it, please? I don't think this is possible. Partitions have to be coherent disk space. If I read your current layout correctly, shrinking ada0p2 (apple-hfs) would leave a "hole" before ada0p3 (apple-boot), but your swap space is ada0p6. However, you can add a second swap space (and maybe even ignore your existing one), so the final layout could be this: ada0p1 efi (200M) ada0p2 apple-hfs (580G - 64G) <--- shrink ada0p3 freebsd-swap (64G) <--- create in "hole" ada0p4 apple-boot (620M) ada0p5 freebsd-boot (512K) ada0p6 freebsd-ufs (347G) ada0p7 freebsd-swap (3.6G) <--- maybe ignore However, I don't have experience regarding partitioning on Mac OS X systems, but from a "logic point of view", this sounds reasonable. I'm also not sure if repartitioning will cause partition numbers to change, or if the offset and size will be assigned accordingly (so the new partition would become ada0p7). > Should I format on OS X empty space to FAT? No, leave it untouched, "empty space", unallocated. A swap partition doesn't need a file system, in fact, is _has to be_ void of a file system. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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