Date: Mon, 13 Jul 2009 04:34:59 +0200 From: Alson van der Meulen <alson+ml@alm.flutnet.org> To: freebsd-current@freebsd.org Subject: Re: Disk devices changed after upgrade to current Message-ID: <20090713023459.GA1870@tafi.alm.flutnet.org> In-Reply-To: <d7195cff0907121819n3f0d0863m998547a83441624d@mail.gmail.com> References: <fdfa5f6e734eaf50cc774efb62bbdba2@xtaz.co.uk> <4A58A056.3020002@haruhiism.net> <b2763ae4d9e6985bde0299caffb0676c@xtaz.co.uk> <200907120824.02622.mel.flynn%2Bfbsd.current@mailing.thruhere.net> <d7195cff0907121819n3f0d0863m998547a83441624d@mail.gmail.com>
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* illoai@gmail.com <illoai@gmail.com> [2009-07-13 03:19]:
> 2009/7/12 Mel Flynn <mel.flynn+fbsd.current@mailing.thruhere.net>:
> > I do think this is worth mentioning in UPDATING, perhaps with the advice
> > ("strongly recommended") to label partitions before upgrading so that one is
> > not depending on device naming conventions in the first place.
>
> Using the extant ufsid scheme confessedly functionally equivalent
> also decrease in anxiety, as fsck clears inodes and I can't tell which
> partition, cos /dev/ufsid/beefbeef00f00f looks a lot like anything else
> in hexidecimal: like double the symbols of octal.
Actually, I recently upgraded from -stable to -current, and the fact
that I did use ufsids in -stable caused problems during the upgrade,
since they don't appear to work for me in -current:
# ls -l /dev/ufsid
total 0
crw-r----- 1 root operator 0, 94 Jul 13 04:18 491f4f09c2327891
crw-r----- 1 root operator 0, 90 Jul 13 04:18 494823268ce19306
crw-r----- 1 root operator 0, 92 Jul 13 04:18 49482337897d46de
crw-r----- 1 root operator 0, 91 Jul 13 04:18 4948233c348aaa57
crw-r----- 1 root operator 0, 93 Jul 13 04:18 494825678ec6ec4c
# /sbin/fsck -p /dev/ufsid/4948233c348aaa57
fsck: cannot open `/dev/ufsid/4948233c348aaa57': Operation not permitted
# /sbin/mount /dev/ufsid/4948233c348aaa57 /tmp
mount: /dev/ufsid/4948233c348aaa57 : Operation not permitted
(/dev/ufsid/4948233c348aaa57 is my /tmp, this was tested in single user mode with only / mounted ro).
Fortunately I had the real device names (/dev/mirror/gm0X) still
commented out in my fstab, but it definitely didn't make the upgrade any
easier. glabels (used for zfs) did continue to work.
Alson
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