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On Monday 01 Aug 2016 14:51:02 Mick wrote: |
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> Given Andrew's steer I had another look and found this guide: |
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> |
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> https://wiki.gentoo.org/wiki/Project:AMD64/32-bit_Chroot_Guide |
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> |
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> Is this approach still valid, or have things moved on since this article |
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> was authored (2012) and different configuration/approach is now |
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> recommended? |
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I use that method to maintain a 32-bit Atom box. I export its /usr/portage |
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via NFS to a chroot on this i7 box and build packages in the chroot. Then I |
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install from packages on the Atom. |
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I'm sure it would be just as easy, or more so, to mount the whole Atom file |
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system and work in it as though I had an i7 processor on the Atom file |
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system. I may try that again. Meanwhile, here's my /etc/init.d/atom script. |
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The mtab I copy in contains enough entries to forestall error messages: |
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$ cat /etc/init.d/atom |
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#!/sbin/openrc-run |
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depend() { |
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need localmount |
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need bootmisc |
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} |
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start() { |
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ebegin "Mounting 32-bit chroot dirs under /mnt/atom" |
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mount -t proc /proc /mnt/atom/proc |
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mount --rbind /dev /mnt/atom/dev |
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mount --rbind /sys /mnt/atom/sys |
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mount --rbind /var/tmp/portage /mnt/atom/var/tmp/portage |
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mount -t nfs 192.168.1.2:/usr/portage/packages /mnt/atom/usr/portage/packages |
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cp /etc/mtab.atom /mnt/atom/etc/mtab |
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eend $? "Error mounting 32-bit chroot directories" |
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} |
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stop() { |
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ebegin "Unmounting 32-bit /mnt/atom chroot dirs" |
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rm /mnt/atom/etc/mtab |
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umount -f /mnt/atom/var/tmp/portage |
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umount -f /mnt/atom/sys/firmware/efi/efivars |
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umount -f /mnt/atom/sys/fs/pstore |
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umount -f /mnt/atom/sys/fs/cgroup/openrc |
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umount -f /mnt/atom/sys/fs/cgroup/cpuset |
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umount -f /mnt/atom/sys/fs/cgroup/cpu |
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umount -f /mnt/atom/sys/fs/cgroup/cpuacct |
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umount -f /mnt/atom/sys/fs/cgroup/freezer |
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umount -f /mnt/atom/sys/fs/cgroup |
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umount -f /mnt/atom/sys/kernel/config |
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umount -f /mnt/atom/sys/kernel/debug |
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umount -f /mnt/atom/dev/pts |
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umount -f /mnt/atom/dev/shm |
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umount -f /mnt/atom/dev/mqueue |
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umount -f /mnt/atom/proc |
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umount -f /mnt/atom/sys |
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umount -f /mnt/atom/dev |
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umount -f /mnt/atom/usr/portage/packages |
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eend $? "Error unmounting 32-bit chroot directories" |
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} |
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Of course I haven't bothered with idiot-proofing it, as I'm the only one |
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here. |
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HTH. |
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-- |
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Rgds |
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Peter |
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