Date: Mon, 23 Oct 2006 16:04:31 +1000 From: Andrew Reilly <andrew-freebsd@areilly.bpc-users.org> To: Robert Watson <rwatson@FreeBSD.org> Cc: Randy Bush <randy@psg.com>, FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: 5 to 6 Message-ID: <20061023060431.GA3186@duncan.reilly.home> In-Reply-To: <20061020005501.R32598@fledge.watson.org> References: <17719.43574.819134.370333@roam.psg.com> <20061020005501.R32598@fledge.watson.org>
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On Fri, Oct 20, 2006 at 12:56:58AM +0100, Robert Watson wrote: > On Thu, 19 Oct 2006, Randy Bush wrote: > >do folk actually successfully upgrade > >to RELENG_6 *safely* on a many-user production system using the > >instructions in UPDATING? I've done that successfully on two single-user workstations, but it failed when it came to try on the one multi-user production box that I maintain. I've posted to the lists about this a couple of times and received zero responses, so my guess is that my condition was sufficiently obscure that no-one else has experienced the problem[*]. A shame. I'll have to do a re-format and start from scratch upgrade, some time that I can get the system quiet enough for long enough. > Do make sure to boot a 6.x kernel with your 5.x userland and test things > out a bit - make sure your hardware probes, is reliable, etc. Ditto. This was how I discovered that the ataraid in the 6.x kernel does something sufficiently different to the one in the 5.x kernel that I couldn't get past the fsck of the /usr partition... Luckily enough of / was mounting successfully for me to back out to the (working) 5.x kernel. So: my two cents: it can work, but it's possible for it not to work, and care is required. [*] The production server is using a software RAID mirror on a pair of SATA drives on a low-end Intel P4/ICH6 motherboard, using ar(4), configured by atacontrol. Fsck on 6.x can't find any superblocks on /usr, but 5.5 is fine. Cheers, -- Andrew
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