Date: Mon, 11 Nov 2013 20:30:50 +0000 From: "Teske, Devin" <Devin.Teske@fisglobal.com> To: Michael Dexter <editor@callfortesting.org> Cc: Current Current <freebsd-current@freebsd.org>, Devin Teske <dteske@freebsd.org>, "Teske, Devin" <Devin.Teske@fisglobal.com>, Peter Grehan <grehan@freebsd.org>, Nathan Whitehorn <nwhitehorn@freebsd.org> Subject: Re: [CFT] bsdinstall and zfsboot enhancements Message-ID: <BFE265FC-849A-4381-8DF7-216AD5584253@fisglobal.com> In-Reply-To: <5281340E.8080009@callfortesting.org> References: <C9783B1F-20EA-4C08-9947-70DF363E8B6A@fisglobal.com> <5275C597.6070702@freebsd.org> <97944047-D575-4E2E-B687-9871DFE058E3@fisglobal.com> <ABD90FE2-1540-410A-959E-D91D0BE811E3@freebsd.org> <52769CFE.5080707@freebsd.org> <5281340E.8080009@callfortesting.org>
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(disabling default gpg-signing until they fix a bug with the quoting) On Nov 11, 2013, at 11:46 AM, Michael Dexter wrote: >=20 > Hello all, >=20 > I have been experimenting with various BSD and GNU/Linux boot media > under bhyve and noticed that we may want to accommodate the "LiveCD" > mode of the installer, which in turn requires the correct console. >=20 > Currently, one is prompted for VT100 for installation but this does not > appear to work/stick for LiveCD mode. >=20 > Can anyone verify this? >=20 Sorry, I mistook your issue in the previous e-mail to be on-going with the thread it was inline with. "LiveCD" changes things a bit. (thinks) I would expect that a prompt could do: 1. modify /etc/ttys on the boot media 2. run "init q" But there's a couple of assumptions... 3. Can we even write to /etc/ttys? NB: We can write to /tmp because it's an md0 swap device So do we have to get fancy with slipping a unionfs layer backed by another md swap device above the root? That would make every file on the boot media writable (writes would go to the swap-backed md device and if you execute "rm -fW file" you can get back files that have been previously unlinked -- unlinks are stored as whiteouts= in the swap backed md device). For all intents and purposes, the read-only fil= e- system becomes writable and we could then munge /etc/ttys to enable serial only when a menu item is chosen. If I'm off-base, let me know... sounds like a lot of trouble. The alternative being that you enable serial by default but then I have to = tell field engineers to unplug barcode readers before they do an install??? (tha= t's a question, it may be entirely safe, but I've never tried, seems unsafe) Question is, how would you disable it? Goes back to writable filesystem. --=20 Devin _____________ The information contained in this message is proprietary and/or confidentia= l. If you are not the intended recipient, please: (i) delete the message an= d all copies; (ii) do not disclose, distribute or use the message in any ma= nner; and (iii) notify the sender immediately. In addition, please be aware= that any message addressed to our domain is subject to archiving and revie= w by persons other than the intended recipient. Thank you.
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