Date: Mon, 07 Nov 2022 12:47:29 -0600 From: Mike Karels <mike@karels.net> To: bob prohaska <fbsd@www.zefox.net> Cc: freebsd-arm@freebsd.org, jmg@freebsd.org Subject: Re: adding swap when expanding root filesystem Message-ID: <78C2FBC4-D2CE-44B0-9535-02C0EDECD10A@karels.net> In-Reply-To: <20221107175206.GA49113@www.zefox.net> References: <202211071610.2A7GAcHl090048@mail.karels.net> <20221107175206.GA49113@www.zefox.net>
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On 7 Nov 2022, at 11:52, bob prohaska wrote: > On Mon, Nov 07, 2022 at 10:10:38AM -0600, Mike Karels wrote: >> This question is not really arm-specific, but I couldn't think of a be= tter >> mailing list for it. >> >> There are peridic issues reported on small systems like Raspberry Pi >> where people are running buildworld or poudriere and running out of >> memory. As the user gets no control over the disk layout when install= ing, >> there is no option to add swap space on the install image. I have add= ed >> swap space on a USB disk, but this is often not an option. It occurre= d >> to me that it might be reasonable to add swap space before expanding >> the root filesystem if there is sufficient space. I have a prototype, >> and wondered if this is a good thing to do. Granted, this will often >> create swap on microSD, which is not optimal, but probably better than >> nothing. >> >> The current prototype creates a swap partition which is 1/10 of the di= sk >> if the disk is at least 15 GB and the initial root partition is no mor= e >> than 1/3 of the disk, but only up to 1.5x of physical memory. I would >> probably enable this by default, but provide a way to disable it via a >> kenv variable and/or a variable in /etc/rc.conf. >> >> Thoughts? > > For starters, is there any hope of making bsdinstall run from the > microSD and installing FreeBSD via the traditional process on USB? > No need to limit to USB, but that's a useful option for RPi and one > option for many more devices. That treats microSD like a boot > floppy. I think that=E2=80=99s a completely different problem. I suspect that th= is is already possible, fetching packages over the net, but I don=E2=80=99t know the incantation. Ideally the packages would be local, but then the image would be more like a CD-ROM. It would be nice to have a procedure documented though. Mike > I haven't looked at bsdinstall in a very long time, so maybe the > traditional installation process isn't as I remember it. ISTR it > allowing selection of a boot device, a swap device and at least > one /usr device. Maybe I'm confusing it with Jordan Hubbard's > installer. > > Thanks for reading, and apologies if I'm hopelessly out of date. > > bob prohaska
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