[buildd-tools-devel] Bug#681884: How to discover which process own the mount-point

Mon Dec 28 17:08:05 UTC 2015

> schroot works fine, no problem whether daily used. The misbehavior
> reported happens when the system is *resumed* from suspend-to-ram (not
> hibernate: suspend-to-disk) after a day.
> schroot has trouble when closing session because of the schroot's
> mount-point is reported busy:

I add verbose debug output of a schroot session:

$ schroot -c kubuntu --debug=notice
D(1): Loading config file: /etc/schroot/schroot.conf
D(1): Loading data file: /etc/schroot/schroot.conf
D(1): Loading config directory: /etc/schroot/chroot.d
D(1): Loading data file: /etc/schroot/chroot.d/kubuntu.conf
D(2): Getting keyfile group=kubuntu, key=type
D(1): value=block-device
D(2): Created template chroot (type=block-device
name/session-id=kubuntu  namespace=chroot  source-clonable=1)
D(2): Getting keyfile group=kubuntu, key=active
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=run-setup-scripts
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=run-session-scripts
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=run-exec-scripts
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=profile
D(1): value=desktop
D(2): Getting keyfile group=kubuntu, key=script-config
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=priority
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=aliases
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=environment-filter
D(1): value=XDG_RUNTIME_DIR
D(2): Getting keyfile group=kubuntu, key=description
D(1): value=Kubuntu 15.10
D(2): Getting keyfile group=kubuntu, key=users
D(1): value=frank
D(1): value=frank
D(2): Getting keyfile group=kubuntu, key=groups
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=root-users
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=root-groups
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=mount-location
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=name
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=command-prefix
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=message-verbosity
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=preserve-environment
D(1): value=0
D(2): Getting keyfile group=kubuntu, key=shell
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=device
D(1): value=/dev/mapper/ld0-lv2
D(2): Getting keyfile group=kubuntu, key=personality
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=user-modifiable-keys
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=root-modifiable-keys
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=mount-device
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=mount-options
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=location
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=union-type
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=union-mount-options
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=union-overlay-directory
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=union-underlay-directory
D(1): key not found
D(2): Getting keyfile group=kubuntu, key=setup.nssdatabases
D(1): value=
D(1): Looking for alias kubuntu with hint chroot
D(1): Alias found
D(1): Looking for chroot kubuntu in namespace chroot
D(1): Looking for alias  with hint session
D(1): Alias not found
D(1): Looking for chroot  in namespace session
D(2): Creating schroot session
D(1): Inserted into environment: XDG_VTNR=7
D(1): Inserted into environment: __GL_YIELD=USLEEP
D(1): Inserted into environment: KDE_TRIPLE_BUFFERING=1
D(1): Inserted into environment: SSH_AGENT_PID=936
D(1): Inserted into environment: XDG_SESSION_ID=1
D(1): Inserted into environment: KDE_MULTIHEAD=false
D(1): Inserted into environment: DM_CONTROL=/var/run/xdmctl
D(1): Inserted into environment: SHELL=/bin/bash
D(1): Inserted into environment: TERM=xterm
D(1): Inserted into environment: PHONON_GST_VIDEOMODE=opengl
D(1): Inserted into environment: HISTSIZE=1000
D(1): Inserted into environment: XDM_MANAGED=method=classic,auto
D(1): Inserted into environment:
GTK2_RC_FILES=/etc/gtk-2.0/gtkrc:/home/frank/.gtkrc-2.0:/home/frank/.kde/share/config/gtkrc-2.0
D(1): Inserted into environment: KONSOLE_DBUS_SERVICE=:1.34
D(1): Inserted into environment: KONSOLE_PROFILE_NAME=Develop
D(1): Inserted into environment: GS_LIB=/home/frank/.fonts
D(1): Inserted into environment:
GTK_RC_FILES=/etc/gtk/gtkrc:/home/frank/.gtkrc:/home/frank/.kde/share/config/gtkrc
D(1): Inserted into environment: WINDOWID=44040218
D(1): Inserted into environment:
SHELL_SESSION_ID=b08e7572e55d40009363971fae337f21
D(1): Inserted into environment: KDE_FULL_SESSION=true
D(1): Inserted into environment: HISTFILESIZE=1000
D(1): Inserted into environment: USER=frank
D(1): Inserted into environment:
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;3
5:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:
D(1): Inserted into environment: __GL_THREADED_OPTIMIZATIONS=1
D(1): Inserted into environment:
SSH_AUTH_SOCK=/tmp/ssh-P9tMoR0a1Vut/agent.904
D(1): Inserted into environment:
SESSION_MANAGER=local/itek:@/tmp/.ICE-unix/1037,unix/itek:/tmp/.ICE-unix/1037
D(1): Inserted into environment: DESKTOP_SESSION=kde-plasma
D(1): Inserted into environment:
PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
D(1): Inserted into environment: PHONON_GST_ALL_EFFECTS=1
D(1): Inserted into environment: PWD=/home/frank
D(1): Inserted into environment: KDE_SESSION_UID=1000
D(1): Inserted into environment: LANG=it_IT.UTF-8
D(1): Inserted into environment:
GCC_COLORS=error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01
D(1): Inserted into environment: PS1=[\u@\h \W$(declare -F __git_ps1
&>/dev/null && __git_ps1 " (%s)")]\$
D(1): Inserted into environment: KONSOLE_DBUS_SESSION=/Sessions/1
D(1): Inserted into environment:
HISTIGNORE=&:su*:[bfh]g*:pwd:grep*:less*:rm*:mv*:cp*:bc*:df*:wh*:xhost*:ping*:apd:apu:vps
D(1): Inserted into environment: HISTCONTROL=ignoreboth:erasedups
D(1): Inserted into environment: HOME=/home/frank
D(1): Inserted into environment: COLORFGBG=15;0
D(1): Inserted into environment: XDG_SEAT=seat0
D(1): Inserted into environment: SHLVL=1
D(1): Inserted into environment: KDE_SESSION_VERSION=4
D(1): Inserted into environment: XCURSOR_THEME=Oxygen_White
D(1): Inserted into environment: LOGNAME=frank
D(1): Inserted into environment: __GL_FSAA_MODE=7
D(1): Inserted into environment:
XDG_DATA_DIRS=/usr/share:/usr/share:/usr/local/share
D(1): Inserted into environment:
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-xTTiHCj3Zv,guid=cec1f271f3e4f4c624616306567efbea
D(1): Inserted into environment: WINDOWPATH=7
D(1): Inserted into environment: XDG_RUNTIME_DIR=/run/user/1000
D(1): Inserted into environment: DISPLAY=:0
D(1): Inserted into environment:
QT_PLUGIN_PATH=/home/frank/.kde/lib/kde4/plugins/:/usr/lib/kde4/plugins/
D(1): Inserted into environment: XDG_CURRENT_DESKTOP=KDE
D(1): Inserted into environment: OLDPWD=/home/frank
D(1): Inserted into environment: _=/usr/bin/schroot
D(2): auth ruid = 1.000, rgid = 1.000
D(2): auth uid = 1.000, gid = 1.000
D(1): Inserted into environment: XDG_VTNR=7
D(1): Inserted into environment: __GL_YIELD=USLEEP
D(1): Inserted into environment: KDE_TRIPLE_BUFFERING=1
D(1): Inserted into environment: SSH_AGENT_PID=936
D(1): Inserted into environment: XDG_SESSION_ID=1
D(1): Inserted into environment: KDE_MULTIHEAD=false
D(1): Inserted into environment: DM_CONTROL=/var/run/xdmctl
D(1): Inserted into environment: SHELL=/bin/bash
D(1): Inserted into environment: TERM=xterm
D(1): Inserted into environment: PHONON_GST_VIDEOMODE=opengl
D(1): Inserted into environment: HISTSIZE=1000
D(1): Inserted into environment: XDM_MANAGED=method=classic,auto
D(1): Inserted into environment:
GTK2_RC_FILES=/etc/gtk-2.0/gtkrc:/home/frank/.gtkrc-2.0:/home/frank/.kde/share/config/gtkrc-2.0
D(1): Inserted into environment: KONSOLE_DBUS_SERVICE=:1.34
D(1): Inserted into environment: KONSOLE_PROFILE_NAME=Develop
D(1): Inserted into environment: GS_LIB=/home/frank/.fonts
D(1): Inserted into environment:
GTK_RC_FILES=/etc/gtk/gtkrc:/home/frank/.gtkrc:/home/frank/.kde/share/config/gtkrc
D(1): Inserted into environment: WINDOWID=44040218
D(1): Inserted into environment:
SHELL_SESSION_ID=b08e7572e55d40009363971fae337f21
D(1): Inserted into environment: KDE_FULL_SESSION=true
D(1): Inserted into environment: HISTFILESIZE=1000
D(1): Inserted into environment: USER=frank
D(1): Inserted into environment:
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;3
5:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:
D(1): Inserted into environment: __GL_THREADED_OPTIMIZATIONS=1
D(1): Inserted into environment:
SSH_AUTH_SOCK=/tmp/ssh-P9tMoR0a1Vut/agent.904
D(1): Inserted into environment:
SESSION_MANAGER=local/itek:@/tmp/.ICE-unix/1037,unix/itek:/tmp/.ICE-unix/1037
D(1): Inserted into environment: DESKTOP_SESSION=kde-plasma
D(1): Inserted into environment:
PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
D(1): Inserted into environment: PHONON_GST_ALL_EFFECTS=1
D(1): Inserted into environment: PWD=/home/frank
D(1): Inserted into environment: KDE_SESSION_UID=1000
D(1): Inserted into environment: LANG=it_IT.UTF-8
D(1): Inserted into environment:
GCC_COLORS=error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01
D(1): Inserted into environment: PS1=[\u@\h \W$(declare -F __git_ps1
&>/dev/null && __git_ps1 " (%s)")]\$
D(1): Inserted into environment: KONSOLE_DBUS_SESSION=/Sessions/1
D(1): Inserted into environment:
HISTIGNORE=&:su*:[bfh]g*:pwd:grep*:less*:rm*:mv*:cp*:bc*:df*:wh*:xhost*:ping*:apd:apu:vps
D(1): Inserted into environment: HISTCONTROL=ignoreboth:erasedups
D(1): Inserted into environment: HOME=/home/frank
D(1): Inserted into environment: COLORFGBG=15;0
D(1): Inserted into environment: XDG_SEAT=seat0
D(1): Inserted into environment: SHLVL=1
D(1): Inserted into environment: KDE_SESSION_VERSION=4
D(1): Inserted into environment: XCURSOR_THEME=Oxygen_White
D(1): Inserted into environment: LOGNAME=frank
D(1): Inserted into environment: __GL_FSAA_MODE=7
D(1): Inserted into environment:
XDG_DATA_DIRS=/usr/share:/usr/share:/usr/local/share
D(1): Inserted into environment:
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-xTTiHCj3Zv,guid=cec1f271f3e4f4c624616306567efbea
D(1): Inserted into environment: WINDOWPATH=7
D(1): Inserted into environment: XDG_RUNTIME_DIR=/run/user/1000
D(1): Inserted into environment: DISPLAY=:0
D(1): Inserted into environment:
QT_PLUGIN_PATH=/home/frank/.kde/lib/kde4/plugins/:/usr/lib/kde4/plugins/
D(1): Inserted into environment: XDG_CURRENT_DESKTOP=KDE
D(1): Inserted into environment: OLDPWD=/home/frank
D(1): Inserted into environment: _=/usr/bin/schroot
D(2): auth ruid = 1.000, rgid = 1.000
D(2): auth uid = 1.000, gid = 1.000
D(1): pam_start OK
D(2): In users: 1
In groups: 0
In root-users: 0
In root-groups: 0
D(1): Inserted into environment: PATH=/usr/local/bin:/usr/bin:/bin
D(1): Inserted into environment: HOME=/home/frank
D(1): Inserted into environment: LOGNAME=frank
D(1): Inserted into environment: USER=frank
D(1): Inserted into environment: TERM=xterm
D(1): Inserted into environment: SHELL=/bin/bash
D(2): pam_putenv: set HOME=/home/frank
D(2): pam_putenv: set LOGNAME=frank
D(2): pam_putenv: set PATH=/usr/local/bin:/usr/bin:/bin
D(2): pam_putenv: set SHELL=/bin/bash
D(2): pam_putenv: set TERM=xterm
D(2): pam_putenv: set USER=frank
D(1): pam_putenv OK
D(1): pam_acct_mgmt OK
D(1): pam_setcred OK
D(2): PAM authentication succeeded for user
D(1): Running session in kubuntu chroot:
D(2): In users: 1
In groups: 0
In root-users: 0
In root-groups: 0
D(2): Cloned session kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Setting mount location
D(1): Mount Location:
/var/lib/schroot/mount/kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(2): setup_chroot: chroot=kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600,
setup_type=0, chroot_status=1, lock_status=1
D(1): Inserted into environment: CHROOT_TYPE=block-device
D(1): Inserted into environment:
CHROOT_NAME=kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Inserted into environment:
SESSION_ID=kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Inserted into environment: CHROOT_DESCRIPTION=Kubuntu 15.10
(session chroot)
D(1): Inserted into environment:
CHROOT_MOUNT_LOCATION=/var/lib/schroot/mount/kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Inserted into environment:
CHROOT_PATH=/var/lib/schroot/mount/kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Inserted into environment: CHROOT_PROFILE=desktop
D(1): Inserted into environment: CHROOT_PROFILE_DIR=/etc/schroot/desktop
D(1): Inserted into environment: CHROOT_SESSION_CREATE=false
D(1): Inserted into environment: CHROOT_SESSION_CLONE=false
D(1): Inserted into environment: CHROOT_SESSION_PURGE=false
D(1): Inserted into environment: CHROOT_DEVICE=/dev/mapper/ld0-lv2
D(2): Getting environment variable=SETUP_CONFIG
D(1): name not found: SETUP_CONFIG
D(1): Inserted into environment: SETUP_CONFIG=desktop/config
D(2): Getting environment variable=SETUP_COPYFILES
D(1): name not found: SETUP_COPYFILES
D(1): Inserted into environment: SETUP_COPYFILES=desktop/copyfiles
D(2): Getting environment variable=SETUP_FSTAB
D(1): name not found: SETUP_FSTAB
D(1): Inserted into environment: SETUP_FSTAB=desktop/fstab
D(2): Getting environment variable=SETUP_NSSDATABASES
D(1): name not found: SETUP_NSSDATABASES
D(1): Inserted into environment: CHROOT_MOUNT_DEVICE=/dev/mapper/ld0-lv2
D(1): Inserted into environment: CHROOT_UNION_TYPE=none
D(1): Inserted into environment: CHROOT_NAME=kubuntu
D(1): Inserted into environment: CHROOT_ALIAS=kubuntu
D(1): Inserted into environment: AUTH_USER=frank
D(1): Inserted into environment: AUTH_RUSER=frank
D(1): Inserted into environment: AUTH_RGROUP=frank
D(1): Inserted into environment: AUTH_UID=1000
D(1): Inserted into environment: AUTH_GID=1000
D(1): Inserted into environment: AUTH_RUID=1000
D(1): Inserted into environment: AUTH_RGID=1000
D(1): Inserted into environment: AUTH_HOME=/home/frank
D(1): Inserted into environment: AUTH_SHELL=/bin/bash
D(1): Inserted into environment: VERBOSE=normal
D(1): Inserted into environment: MOUNT_DIR=/var/lib/schroot/mount
D(1): Inserted into environment:
LIBEXEC_DIR=/usr/lib/x86_64-linux-gnu/schroot
D(1): Inserted into environment: SYSCONF_DIR=/etc/schroot
D(1): Inserted into environment: DATA_DIR=/usr/share/schroot
D(1): Inserted into environment: SETUP_DATA_DIR=/usr/share/schroot/setup
D(1): Inserted into environment: PID=3093
D(1): Inserted into environment: PLATFORM=linux
D(1): Inserted into environment:
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
D(2): 00check
05btrfs
05file
05lvm
05union
10mount
15binfmt
15killprocs
20copyfiles
20nssdatabases
50chrootname
70services
99check

D(2): run_parts: executing 00check, setup-start, ok
D(2): run_parts: 00check succeeded
D(2): run_parts: executing 05btrfs, setup-start, ok
D(2): run_parts: 05btrfs succeeded
D(2): run_parts: executing 05file, setup-start, ok
D(2): run_parts: 05file succeeded
D(2): run_parts: executing 05lvm, setup-start, ok
D(2): run_parts: 05lvm succeeded
D(2): run_parts: executing 05union, setup-start, ok
D(2): run_parts: 05union succeeded
D(2): run_parts: executing 10mount, setup-start, ok
D(2): run_parts: 10mount succeeded
D(2): run_parts: executing 15binfmt, setup-start, ok
D(2): run_parts: 15binfmt succeeded
D(2): run_parts: executing 15killprocs, setup-start, ok
D(2): run_parts: 15killprocs succeeded
D(2): run_parts: executing 20copyfiles, setup-start, ok
D(2): run_parts: 20copyfiles succeeded
D(2): run_parts: executing 20nssdatabases, setup-start, ok
D(2): run_parts: 20nssdatabases succeeded
D(2): run_parts: executing 50chrootname, setup-start, ok
D(2): run_parts: 50chrootname succeeded
D(2): run_parts: executing 70services, setup-start, ok
D(2): run_parts: 70services succeeded
D(2): run_parts: executing 99check, setup-start, ok
D(2): run_parts: 99check succeeded
D(2): setup_chroot: chroot=kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600,
setup_type=1, chroot_status=1, lock_status=1
D(1): pam_open_session OK
D(1): Inserted into environment: HOME=/home/frank
D(1): Inserted into environment: LOGNAME=frank
D(1): Inserted into environment: PATH=/usr/local/bin:/usr/bin:/bin
D(1): Inserted into environment: SHELL=/bin/bash
D(1): Inserted into environment: TERM=xterm
D(1): Inserted into environment: USER=frank
D(1): Inserted into environment: XDG_SESSION_ID=1
D(1): Inserted into environment: XDG_RUNTIME_DIR=/run/user/1000
D(1): Inserted into environment: XDG_SEAT=seat0
D(1): Inserted into environment: XDG_VTNR=7
D(1): Inserted into environment: HOME=/home/frank
D(1): Inserted into environment: LOGNAME=frank
D(1): Inserted into environment: PATH=/usr/local/bin:/usr/bin:/bin
D(1): Inserted into environment: SHELL=/bin/bash
D(1): Inserted into environment: TERM=xterm
D(1): Inserted into environment: USER=frank
D(2): Filtered from environment: XDG_RUNTIME_DIR
D(1): Inserted into environment: XDG_SEAT=seat0
D(1): Inserted into environment: XDG_SESSION_ID=1
D(1): Inserted into environment: XDG_VTNR=7
D(2): CWD=/home/frank
D(2):
location=/var/lib/schroot/mount/kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Set GID=1.000
D(1): Set supplementary groups
D(1): Set personality=undefined
D(1): Changed directory to
/var/lib/schroot/mount/kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Changed root to
/var/lib/schroot/mount/kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Set UID=1.000
D(1): Dropped root privileges
D(2): Getting environment variable=HOME
D(1): value=/home/frank
D(2): Directory fallbacks: /home/frank, /
D(1): Changed directory to /home/frank
D(1): Inserted into environment: SHELL=/bin/bash
D(1): Running login shell: /bin/bash
D(1): command=-bash
D(1): Inserted into environment: SCHROOT_COMMAND=-bash
D(1): Inserted into environment: SCHROOT_USER=frank
D(1): Inserted into environment: SCHROOT_GROUP=frank
D(1): Inserted into environment: SCHROOT_UID=1000
D(1): Inserted into environment: SCHROOT_GID=1000
D(1): Inserted into environment: SCHROOT_CHROOT_NAME=kubuntu
D(1): Inserted into environment: SCHROOT_ALIAS_NAME=kubuntu
D(1): Inserted into environment:
SCHROOT_SESSION_ID=kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(2): Set environment:
HOME=/home/frank
LOGNAME=frank
PATH=/usr/local/bin:/usr/bin:/bin
SCHROOT_ALIAS_NAME=kubuntu
SCHROOT_CHROOT_NAME=kubuntu
SCHROOT_COMMAND=-bash
SCHROOT_GID=1000
SCHROOT_GROUP=frank
SCHROOT_SESSION_ID=kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
SCHROOT_UID=1000
SCHROOT_USER=frank
SHELL=/bin/bash
TERM=xterm
USER=frank
XDG_SEAT=seat0
XDG_SESSION_ID=1
XDG_VTNR=7

************************************************************
* Resumed from suspend-to-ram after a day, then:
************************************************************

frank at itek:~$ exit
logout
D(1): pam_close_session OK
D(2): setup_chroot: chroot=kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600,
setup_type=2, chroot_status=1, lock_status=1
D(1): Inserted into environment: CHROOT_TYPE=block-device
D(1): Inserted into environment:
CHROOT_NAME=kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Inserted into environment:
SESSION_ID=kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Inserted into environment: CHROOT_DESCRIPTION=Kubuntu 15.10
(session chroot)
D(1): Inserted into environment:
CHROOT_MOUNT_LOCATION=/var/lib/schroot/mount/kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Inserted into environment:
CHROOT_PATH=/var/lib/schroot/mount/kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600
D(1): Inserted into environment: CHROOT_PROFILE=desktop
D(1): Inserted into environment: CHROOT_PROFILE_DIR=/etc/schroot/desktop
D(1): Inserted into environment: CHROOT_SESSION_CREATE=false
D(1): Inserted into environment: CHROOT_SESSION_CLONE=false
D(1): Inserted into environment: CHROOT_SESSION_PURGE=false
D(1): Inserted into environment: CHROOT_DEVICE=/dev/mapper/ld0-lv2
D(2): Getting environment variable=SETUP_CONFIG
D(1): name not found: SETUP_CONFIG
D(1): Inserted into environment: SETUP_CONFIG=desktop/config
D(2): Getting environment variable=SETUP_COPYFILES
D(1): name not found: SETUP_COPYFILES
D(1): Inserted into environment: SETUP_COPYFILES=desktop/copyfiles
D(2): Getting environment variable=SETUP_FSTAB
D(1): name not found: SETUP_FSTAB
D(1): Inserted into environment: SETUP_FSTAB=desktop/fstab
D(2): Getting environment variable=SETUP_NSSDATABASES
D(1): name not found: SETUP_NSSDATABASES
D(1): Inserted into environment: CHROOT_MOUNT_DEVICE=/dev/mapper/ld0-lv2
D(1): Inserted into environment: CHROOT_UNION_TYPE=none
D(1): Inserted into environment: CHROOT_NAME=kubuntu
D(1): Inserted into environment: CHROOT_ALIAS=kubuntu
D(1): Inserted into environment: AUTH_USER=frank
D(1): Inserted into environment: AUTH_RUSER=frank
D(1): Inserted into environment: AUTH_RGROUP=frank
D(1): Inserted into environment: AUTH_UID=1000
D(1): Inserted into environment: AUTH_GID=1000
D(1): Inserted into environment: AUTH_RUID=1000
D(1): Inserted into environment: AUTH_RGID=1000
D(1): Inserted into environment: AUTH_HOME=/home/frank
D(1): Inserted into environment: AUTH_SHELL=/bin/bash
D(1): Inserted into environment: VERBOSE=normal
D(1): Inserted into environment: MOUNT_DIR=/var/lib/schroot/mount
D(1): Inserted into environment:
LIBEXEC_DIR=/usr/lib/x86_64-linux-gnu/schroot
D(1): Inserted into environment: SYSCONF_DIR=/etc/schroot
D(1): Inserted into environment: DATA_DIR=/usr/share/schroot
D(1): Inserted into environment: SETUP_DATA_DIR=/usr/share/schroot/setup
D(1): Inserted into environment: PID=3093
D(1): Inserted into environment: PLATFORM=linux
D(1): Inserted into environment:
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
D(2): 99check
70services
50chrootname
20nssdatabases
20copyfiles
15killprocs
15binfmt
10mount
05union
05lvm
05file
05btrfs
00check

D(2): run_parts: executing 99check, setup-stop, ok
D(2): run_parts: 99check succeeded
D(2): run_parts: executing 70services, setup-stop, ok
D(2): run_parts: 70services succeeded
D(2): run_parts: executing 50chrootname, setup-stop, ok
D(2): run_parts: 50chrootname succeeded
D(2): run_parts: executing 20nssdatabases, setup-stop, ok
D(2): run_parts: 20nssdatabases succeeded
D(2): run_parts: executing 20copyfiles, setup-stop, ok
D(2): run_parts: 20copyfiles succeeded
D(2): run_parts: executing 15killprocs, setup-stop, ok
D(2): run_parts: 15killprocs succeeded
D(2): run_parts: executing 15binfmt, setup-stop, ok
D(2): run_parts: 15binfmt succeeded
D(2): run_parts: executing 10mount, setup-stop, ok
E: 10mount: rmdir: failed to remove
'/var/lib/schroot/mount/kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600':
Device or resource busy
D(2): run_parts: 10mount failed with status 1
E: kubuntu-eab1e6f8-60bd-4744-b26a-ba0c2801e600: Chroot setup failed:
stage=setup-stop

HTH

-- 
Franco Martelli