Difference between revisions of "Talk:Install/Chroot"

From Funtoo
Jump to: navigation, search
m (Chrooting from working system?)
(suggest alternate chroot command to make the install more universally usable.)
 
(One intermediate revision by one other user not shown)
Line 1: Line 1:
 +
== Debian compatible chroot ==
 +
running the command which chroot within the env command to produce exact paths to chroot from whatever live environment you're in regardless of chroot being in $PATH or not is probably a good idea. 
 +
{{console|body=
 +
###i## env -i HOME=/root TERM=$TERM $(which chroot) /mnt/funtoo bash -l
 +
}}
 +
 
== Chrooting from working system? ==
 
== Chrooting from working system? ==
  
Line 68: Line 74:
  
  
Same issue, and can be resolved via changing 'mount --rbind /sys sys' to 'mount --rbind /sys /mnt/funtoo/sys'
+
Same issue, and can be resolved via changing 'mount --rbind /sys sys' to 'mount --rbind /sys /mnt/funtoo/sys'.
 +
Same method apply with '/dev' directory.
  
 
-[[User:Jeon|Jeon]] ([[User talk:Jeon|talk]]) April 15, 2021 (UTC)
 
-[[User:Jeon|Jeon]] ([[User talk:Jeon|talk]]) April 15, 2021 (UTC)

Latest revision as of 14:07, April 15, 2021

Debian compatible chroot

running the command which chroot within the env command to produce exact paths to chroot from whatever live environment you're in regardless of chroot being in $PATH or not is probably a good idea.

root # env -i HOME=/root TERM=$TERM $(which chroot) /mnt/funtoo bash -l

Chrooting from working system?

From 'Chroot into Funtoo' funtoo suggest invoking:

  • cd /mnt/funtoo
  • mount -t proc none proc
  • mount --rbind /sys sys
  • mount --rbind /dev dev

Which if invoked from 4.18.18-gentoo-r1 results in:

dreamon / # emerge
Failed to validate a sane '/dev'.
bash process substitution doesn't work; this may be an indication of a broken '/dev/fd'.

and `mount`:

ON CHROOT 
mount: failed to read mtab: No such file or directory

ON SYSTEM
/dev/sda6 on / type btrfs (rw,relatime,ssd,noacl,space_cache,subvolid=5,subvol=/)
devtmpfs on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=2050263,mode=755)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
tmpfs on /run type tmpfs (rw,nodev,relatime,size=1640628k,mode=755)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)
cgroup_root on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755)
openrc on /sys/fs/cgroup/openrc type cgroup 
(rw,nosuid,nodev,noexec,relatime,release_agent=/lib/rc/sh/cgroup-release-agent.sh,name=openrc)
none on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cpuset on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cpu on /sys/fs/cgroup/cpu type cgroup (rw,nosuid,nodev,noexec,relatime,cpu)
cpuacct on /sys/fs/cgroup/cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct)
freezer on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
shm on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nosuid,nodev,noexec,relatime)
/dev/sdb1 on /home type xfs (rw,relatime,attr2,inode64,noquota)
/dev/sda2 on /boot type ext2 (rw,relatime,errors=continue,user_xattr)
none on /run/user/1000 type tmpfs (rw,relatime,mode=700,uid=1000)
sysfs on /mnt/funtoo/sys type sysfs (rw,nosuid,nodev,noexec,relatime)
debugfs on /mnt/funtoo/sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
selinuxfs on /mnt/funtoo/sys/fs/selinux type selinuxfs (rw,relatime)
cgroup_root on /mnt/funtoo/sys/fs/cgroup type tmpfs 
(rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755)
openrc on /mnt/funtoo/sys/fs/cgroup/openrc type cgroup 
(rw,nosuid,nodev,noexec,relatime,release_agent=/lib/rc/sh/cgroup-release-agent.sh,name=openrc)
none on /mnt/funtoo/sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cpuset on /mnt/funtoo/sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cpu on /mnt/funtoo/sys/fs/cgroup/cpu type cgroup (rw,nosuid,nodev,noexec,relatime,cpu)
cpuacct on /mnt/funtoo/sys/fs/cgroup/cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct)
freezer on /mnt/funtoo/sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
/dev/sdb1 on /mnt/funtoo/home type xfs (rw,relatime,attr2,inode64,noquota)
devtmpfs on /mnt/funtoo/dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=2050263,mode=755)
mqueue on /mnt/funtoo/dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
devpts on /mnt/funtoo/dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
shm on /mnt/funtoo/dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime)

both (mount+emerge err) was fixed by invoking chroot based on https://wiki.gentoo.org/wiki/Chroot#Configuration

Probably should be included in the funtoo handbook?

EDIT: Command used for chroot was "sudo chroot /mnt/funtoo /bin/bash"

-Kreyren (talk) 07:45, January 28, 2019 (UTC)


Same issue, and can be resolved via changing 'mount --rbind /sys sys' to 'mount --rbind /sys /mnt/funtoo/sys'. Same method apply with '/dev' directory.

-Jeon (talk) April 15, 2021 (UTC)