Re: building ccd during install

[Per Engelbrecht <per_(_at_)_xterm_(_dot_)_dk>]

Paul de Weerd wrote:
> On Fri, May 13, 2005 at 01:06:19PM +0200, Per Engelbrecht wrote:
> | Hi all
> |
> | [OpenBSD 3.7 amd64 bsd.mp]
> |
> | Is it possible to build a ccd during install ?
> | I need an extreemly large /var (spanning the remains of two disks) and
> | would like /var/ to be installed there.
> | Looks to me a bit like the 'chiken and egg' thing.
> |
> | Can't find 'pseudo-device ccd' in GENERIC but 'config' tells me it's
> | there i.e. kernel-tweaks should not be needed.
> | Thank you!
>
>
> Hi Per,
>
> It seems that on amd64, ccd is included in the RAMDISK and RAMDISK_CD
> kernel configuration files :
>
> $ grep ccd /usr/src/sys/arch/amd64/conf/*
> /usr/src/sys/arch/amd64/conf/RAMDISK:#pseudo-device     ccd     4 #
> concatenated disk devices
> /usr/src/sys/arch/amd64/conf/RAMDISK_CD:pseudo-device   ccd     4 #
> concatenated disk devices
> /usr/src/sys/arch/amd64/conf/files.amd64:major  {ccd = 16}

Hi Paul

Kenneth Westerback pointed me that way (#include) thank you both.

> So that's a good hint that you should be able to use CCD during
> install. I'd suggest (as suggested earlier) first installing /var on /
> (as it's only ~10MB). Then, when the installer finishes, you can
> simply enter your newly installed system with
>
> 	$ /mnt/usr/sbin/chroot /mnt

Hmm, normally when moving content of a partition (not often) I prepare 
the disklabel, boot into single-user mode and do a simple tar->cpio 
operation before dealing with 'fstab' and reboot ... I'm not quite sure 
I get your point about the /mnt/usr/sbin/chroot ?!
It's the path plus 'chroot' I'm thinking about.

> After that you can mv /var /var_ORIG && mkdir /var. After that, you
> can create a ccd, edit /etc/fstab to mount the new ccd on /var,
> temporarily mount it there yourself, move the data from /var_ORIG/ to
> /var/, remove /var_ORIG/, unmount /var/, exit the chroot, unmount
> other filesystems, reboot and rejoice ;)

I'm with you (almost) all the way :)

> Hope that helps,
>
> Paul 'WEiRD' de Weerd

I like the original dutch version the most

> PS: ccd is included in the default kernel (no matter what platform
> you're running). See /usr/src/sys/conf/GENERIC, this is included from
> most (all?) platform specific GENERIC's.

Nice!


Thank you for the answer.

/per
per_(_at_)_xterm_(_dot_)_dk

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