I'm using schroot with aufs. Currently, my conf file under \etc\schroot\chroot.d looks like
[trusty_chrome]
description=Ubuntu 14.04 Trusty running Chrome and Adobe Flash
directory=/srv/chroot/trusty_chrome
personality=linux
...
union-type=aufs
union-mount-options=br:/srv/chroot/trusty_chrome.aufs=rw:/srv/chroot/base/trusty_amd64=ro
Basically, the overlay and underlay directory is specified in the mount option. While man schroot.conf hints that they could also be determined by keys union-overlay-directory and union-underlay-directory, while I can not enter chroot properly with these options. More precisely, if I use the following conf,
[trusty_chrome]
description=Ubuntu 14.04 Trusty running Chrome and Adobe Flash
directory=/srv/chroot/trusty_chrome
personality=linux
...
union-type=aufs
union-overlay-directory=/srv/chroot/trusty_chrome.aufs
union-underlay-directory=/srv/chroot/base/trusty_amd64
I'll encounter errors
E: 20copyfiles: cp: cannot create regular file '/var/lib/schroot/mount/trusty_chrome-cb1db93d-c07c-4c2d-bef2-f5025358c2b3/etc/resolv.conf': No such file or directory
E: trusty_chrome-cb1db93d-c07c-4c2d-bef2-f5025358c2b3: Chroot setup failed: stage=setup-start
when try to enter this chroot. So the question is, how could I configure schroot using aufs by keys union-overlay-directory and union-underlay-directory.
Moreover, when I list all chroot managed
$ schroot -l
chroot:trusty_chrome
...
source:trusty_chrome
...
I'll find two entries for each chroot using aufs. Is source:blabla a chroot? I can't enter them by schroot.
I'm using schroot (Debian sbuild) 1.6.10 (04 May 2014) in Ubuntu 14.10.