Some additional information:


google:ubuntu-18.04-64 .../tests/regression/lp-1867752# lxc exec bionic -- bash
root@bionic:~# SNAPD_DEBUG=1 /usr/lib/snapd/snap-update-ns maas
2020/03/17 13:32:31.283960 common.go:60: DEBUG: locking mount namespace of snap "maas"
2020/03/17 13:32:31.284697 common.go:81: DEBUG: freezing processes of snap "maas"
2020/03/17 13:32:31.286688 change.go:363: DEBUG: umount "/snap/maas/5177/maas-cli/lib" UMOUNT_NOFOLLOW (error: no such file or directory)
2020/03/17 13:32:31.287032 update.go:85: cannot change mount namespace according to change unmount (/snap/maas-cli/13/lib /snap/maas/5177/maas-cli/lib none bind,ro 0 0): no such file or directory
2020/03/17 13:32:31.287293 change.go:353: DEBUG: mount --make-rprivate "/snap/maas/5177" (error: <nil>)
2020/03/17 13:32:31.287544 change.go:363: DEBUG: umount "/snap/maas/5177" UMOUNT_NOFOLLOW|MNT_DETACH (error: <nil>)
2020/03/17 13:32:31.288782 change.go:408: DEBUG: remove "/snap/maas/5177" (error: remove /snap/maas/5177: device or resource busy)
2020/03/17 13:32:31.293743 change.go:433: DEBUG: cannot remove busy mount point "/snap/maas/5177"
2020/03/17 13:32:31.293784 change.go:353: DEBUG: mount --make-rprivate "/root" (error: <nil>)
2020/03/17 13:32:31.293817 change.go:363: DEBUG: umount "/root" UMOUNT_NOFOLLOW|MNT_DETACH (error: <nil>)
2020/03/17 13:32:31.293897 change.go:408: DEBUG: remove "/root" (error: remove /root: read-only file system)
2020/03/17 13:32:31.293919 common.go:89: DEBUG: unlocking mount namespace of snap "maas"
2020/03/17 13:32:31.293937 common.go:91: DEBUG: thawing processes of snap "maas"
cannot update snap namespace: read-only file system


root@bionic:~# cat /var/lib/snapd/mount/snap.maas.fstab
/snap/maas/5177/etc/freeipmi /etc/freeipmi none rbind,rw,x-snapd.origin=layout 0 0
/snap/maas/5177/etc/libvirt /etc/libvirt none rbind,rw,x-snapd.origin=layout 0 0
/var/snap/maas/5177/root /root none rbind,rw,x-snapd.origin=layout 0 0
/snap/maas-cli/13/lib /snap/maas/5177/maas-cli/lib none bind,ro 0 0


root@bionic:~# cat /run/snapd/ns/snap.maas.fstab 
tmpfs /etc tmpfs x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,mode=0755,uid=0,gid=0 0 0
/etc/.pwd.lock /etc/.pwd.lock none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/NetworkManager /etc/NetworkManager none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/X11 /etc/X11 none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/acpi /etc/acpi none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/adduser.conf /etc/adduser.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/alternatives /etc/alternatives none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/apm /etc/apm none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/apparmor /etc/apparmor none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/apparmor.d /etc/apparmor.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/apport /etc/apport none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/apt /etc/apt none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/at.deny /etc/at.deny none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/bash.bashrc /etc/bash.bashrc none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/bash_completion /etc/bash_completion none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/bash_completion.d /etc/bash_completion.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/bindresvport.blacklist /etc/bindresvport.blacklist none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/binfmt.d /etc/binfmt.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/byobu /etc/byobu none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/ca-certificates /etc/ca-certificates none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/ca-certificates.conf /etc/ca-certificates.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/calendar /etc/calendar none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/cloud /etc/cloud none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/console-setup /etc/console-setup none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/cron.d /etc/cron.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/cron.daily /etc/cron.daily none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/cron.hourly /etc/cron.hourly none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/cron.monthly /etc/cron.monthly none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/cron.weekly /etc/cron.weekly none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/crontab /etc/crontab none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/cryptsetup-initramfs /etc/cryptsetup-initramfs none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/crypttab /etc/crypttab none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/dbus-1 /etc/dbus-1 none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/debconf.conf /etc/debconf.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/debian_version /etc/debian_version none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/default /etc/default none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/deluser.conf /etc/deluser.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/depmod.d /etc/depmod.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/dhcp /etc/dhcp none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/dnsmasq.d /etc/dnsmasq.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/dnsmasq.d-available /etc/dnsmasq.d-available none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/dpkg /etc/dpkg none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/ec2_version /etc/ec2_version none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/environment /etc/environment none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/ethertypes /etc/ethertypes none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/fonts /etc/fonts none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/fstab /etc/fstab none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/fuse.conf /etc/fuse.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/gai.conf /etc/gai.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/groff /etc/groff none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/group /etc/group none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/group- /etc/group- none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/gshadow /etc/gshadow none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/gshadow- /etc/gshadow- none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/gss /etc/gss none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/hdparm.conf /etc/hdparm.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/host.conf /etc/host.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/hostname /etc/hostname none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/hosts /etc/hosts none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/hosts.allow /etc/hosts.allow none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/hosts.deny /etc/hosts.deny none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/init.d /etc/init.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/initramfs-tools /etc/initramfs-tools none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/inputrc /etc/inputrc none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/iproute2 /etc/iproute2 none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/iscsi /etc/iscsi none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/issue /etc/issue none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/issue.net /etc/issue.net none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/kernel /etc/kernel none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/kernel-img.conf /etc/kernel-img.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/landscape /etc/landscape none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/ld.so.cache /etc/ld.so.cache none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/ld.so.conf /etc/ld.so.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/ld.so.conf.d /etc/ld.so.conf.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/ldap /etc/ldap none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/legal /etc/legal none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/libaudit.conf /etc/libaudit.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/locale.alias /etc/locale.alias none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/locale.gen /etc/locale.gen none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/logcheck /etc/logcheck none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/login.defs /etc/login.defs none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/logrotate.conf /etc/logrotate.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/logrotate.d /etc/logrotate.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/lsb-release /etc/lsb-release none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/ltrace.conf /etc/ltrace.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/lvm /etc/lvm none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/machine-id /etc/machine-id none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/magic /etc/magic none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/magic.mime /etc/magic.mime none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/mailcap /etc/mailcap none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/mailcap.order /etc/mailcap.order none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/manpath.config /etc/manpath.config none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/mdadm /etc/mdadm none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/mime.types /etc/mime.types none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/mke2fs.conf /etc/mke2fs.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/modprobe.d /etc/modprobe.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/modules /etc/modules none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/modules-load.d /etc/modules-load.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/nanorc /etc/nanorc none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/netplan /etc/netplan none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/network /etc/network none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/networkd-dispatcher /etc/networkd-dispatcher none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/networks /etc/networks none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/newt /etc/newt none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/nsswitch.conf /etc/nsswitch.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/opt /etc/opt none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/overlayroot.conf /etc/overlayroot.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/overlayroot.local.conf /etc/overlayroot.local.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/pam.conf /etc/pam.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/pam.d /etc/pam.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/passwd /etc/passwd none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/passwd- /etc/passwd- none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/perl /etc/perl none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/pm /etc/pm none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/polkit-1 /etc/polkit-1 none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/pollinate /etc/pollinate none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/popularity-contest.conf /etc/popularity-contest.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/profile /etc/profile none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/profile.d /etc/profile.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/protocols /etc/protocols none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/python3 /etc/python3 none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/python3.6 /etc/python3.6 none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/rc0.d /etc/rc0.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/rc1.d /etc/rc1.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/rc2.d /etc/rc2.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/rc3.d /etc/rc3.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/rc4.d /etc/rc4.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/rc5.d /etc/rc5.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/rc6.d /etc/rc6.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/rcS.d /etc/rcS.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/rmt /etc/rmt none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/rpc /etc/rpc none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/rsyslog.conf /etc/rsyslog.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/rsyslog.d /etc/rsyslog.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/screenrc /etc/screenrc none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/securetty /etc/securetty none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/security /etc/security none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/selinux /etc/selinux none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/services /etc/services none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/shadow /etc/shadow none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/shadow- /etc/shadow- none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/shells /etc/shells none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/skel /etc/skel none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/sos.conf /etc/sos.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/ssh /etc/ssh none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/ssl /etc/ssl none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/subgid /etc/subgid none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/subgid- /etc/subgid- none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/subuid /etc/subuid none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/subuid- /etc/subuid- none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/sudoers /etc/sudoers none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/sudoers.d /etc/sudoers.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/sysctl.conf /etc/sysctl.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/sysctl.d /etc/sysctl.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/systemd /etc/systemd none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/terminfo /etc/terminfo none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/timezone /etc/timezone none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/tmpfiles.d /etc/tmpfiles.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/ucf.conf /etc/ucf.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/udev /etc/udev none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/ufw /etc/ufw none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/update-manager /etc/update-manager none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/update-motd.d /etc/update-motd.d none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/update-notifier /etc/update-notifier none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/updatedb.conf /etc/updatedb.conf none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/vim /etc/vim none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/vmware-tools /etc/vmware-tools none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/wgetrc /etc/wgetrc none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/etc/xdg /etc/xdg none rbind,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi,x-snapd.detach 0 0
/etc/zsh_command_not_found /etc/zsh_command_not_found none bind,x-snapd.kind=file,x-snapd.synthetic,x-snapd.needed-by=/etc/freeipmi 0 0
/snap/maas/5177/etc/freeipmi /etc/freeipmi none rbind,rw,x-snapd.origin=layout 0 0
/snap/maas/5177/etc/libvirt /etc/libvirt none rbind,rw,x-snapd.origin=layout 0 0
/var/snap/maas/5177/root /root none rbind,rw,x-snapd.origin=layout 0 0
tmpfs /snap/maas/5177 tmpfs x-snapd.synthetic,x-snapd.needed-by=/snap/maas/5177/maas-cli/lib,mode=0755,uid=0,gid=0 0 0
/snap/maas/5177/bin /snap/maas/5177/bin none rbind,x-snapd.synthetic,x-snapd.needed-by=/snap/maas/5177/maas-cli/lib,x-snapd.detach 0 0
/snap/maas/5177/etc /snap/maas/5177/etc none rbind,x-snapd.synthetic,x-snapd.needed-by=/snap/maas/5177/maas-cli/lib,x-snapd.detach 0 0
/snap/maas/5177/lib /snap/maas/5177/lib none rbind,x-snapd.synthetic,x-snapd.needed-by=/snap/maas/5177/maas-cli/lib,x-snapd.detach 0 0
/snap/maas/5177/meta /snap/maas/5177/meta none rbind,x-snapd.synthetic,x-snapd.needed-by=/snap/maas/5177/maas-cli/lib,x-snapd.detach 0 0
/snap/maas/5177/sbin /snap/maas/5177/sbin none rbind,x-snapd.synthetic,x-snapd.needed-by=/snap/maas/5177/maas-cli/lib,x-snapd.detach 0 0
/snap/maas/5177/snap /snap/maas/5177/snap none rbind,x-snapd.synthetic,x-snapd.needed-by=/snap/maas/5177/maas-cli/lib,x-snapd.detach 0 0
/snap/maas/5177/usr /snap/maas/5177/usr none rbind,x-snapd.synthetic,x-snapd.needed-by=/snap/maas/5177/maas-cli/lib,x-snapd.detach 0 0
/snap/maas/5177/var /snap/maas/5177/var none rbind,x-snapd.synthetic,x-snapd.needed-by=/snap/maas/5177/maas-cli/lib,x-snapd.detach 0 0
/snap/maas-cli/13/lib /snap/maas/5177/maas-cli/lib none bind,ro 0 0


I will investigate what is going on next.