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On 1 August 2014 15:28:01 CEST, Dale <rdalek1967@×××××.com> wrote: |
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>Peter Humphrey wrote: |
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>> On Friday 01 August 2014 14:07:08 I wrote: |
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>> |
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>>> I run a couple of chroots on this box to build packages for other |
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>boxes on |
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>>> the LAN. So far, I haven't worked out what I should populate |
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>/etc/mtab with |
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>>> in each chroot. Is it enough to "grep ext4 /etc/mtab > |
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>>> /mnt/chroot/etc/mtab"? That catches all the physical partitions, but |
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>I |
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>>> imagine I need to add some /proc, /sys and /dev entries as well, but |
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>is |
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>>> there a simple formula for doing this? |
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>> I meant to add that one chroot is 32-bit and the other is 64. The |
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>host is an |
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>> i5 running openrc. |
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>> |
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> |
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>It has been a good while since I used this. So, make sure it makes |
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>sense to you before trying this. This may not work if something has |
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>changed in the past several years. Use with caution if at all. |
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> |
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>This is a little script, if you want to call it that, that I used to do |
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>mine. It also lists the command to use to do a 32 bit chroot from a 64 |
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>bit rig. Here it is: |
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> |
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>root@fireball / # cat /root/xx.chroot-mount-32bit |
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> |
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> |
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>mount -o bind /dev /mnt/gentoo32/dev |
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>mount -o bind /dev/pts /mnt/gentoo32/dev/pts |
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>mount -o bind /dev/shm /mnt/gentoo32/dev/shm |
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>mount -o bind /proc /mnt/gentoo32/proc |
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>mount -o bind /proc/bus/usb /mnt/gentoo32/proc/bus/usb |
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>mount -o bind /sys /mnt/gentoo32/sys |
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>mkdir -p /mnt/gentoo32/usr/portage/ |
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>mount -o bind /usr/portage /mnt/gentoo32/usr/portage/ |
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> |
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> |
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>echo " mounting finished" |
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> |
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>echo "run linux32 chroot /mnt/gentoo32 /bin/bash next" |
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>root@fireball / # |
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> |
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> |
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>You may have different mount points at the very least so edit to match |
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>what you have. Again, things could have changed and that no longer |
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>will |
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>work. It may not be a bad idea to let someone who has done this more |
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>recently to give a thumbs up to that. |
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> |
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>That last command should be: |
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> |
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>linux32 chroot /mnt/gentoo32 /bin/bash |
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> |
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>Dale |
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> |
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>:-) :-) |
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|
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That script is too long :) |
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|
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cd /mnt/gentoo |
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mount -o rbind /dev dev |
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mount -o rbind /sys sys |
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mount -o rbind /proc proc |
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cp -L /etc/resolv.conf etc/resolv.conf |
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cd .. |
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chroot gentoo /bin/bash |
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|
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To undo: |
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cd /mnt/gentoo |
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umount -l proc sys dev |
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|
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If you need a 32bit chroot, put linux32 before the chroot like Dale mentioned. |
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|
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-- |
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Joost |
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-- |
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Sent from my Android device with K-9 Mail. Please excuse my brevity. |
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