These are going over the bus signal sender=:1.0 -> dest=(null destination) serial=10268593 path=/org/freedesktop/systemd1/unit/var_2dlib_2dschroot_2dunion_2dunderlay_2dvivid_5cx2damd64_5cx2d422d4deb_5cx2d2a9d_5cx2d4364_5cx2dbba4_5cx2d04d126ec6cf2_2emount; interface=org.freedesktop.DBus.Properties; member=PropertiesChanged string "org.freedesktop.systemd1.Mount" array [ dict entry( string "What" variant string "/dev/disk/by-uuid/980689ca-e7d9-4a99-8230-33b8b6e917cd" ) dict entry( string "Options" variant string "rw,relatime,discard,errors=remount-ro,data=ordered" ) dict entry( string "Type" variant string "ext4" ) dict entry( string "ControlPID" variant uint32 0 ) dict entry( string "Result" variant string "exit-code" ) ] array [ string "ExecMount" string "ExecUnmount" string "ExecRemount" ] signal sender=:1.0 -> dest=(null destination) serial=10268594 path=/org/freedesktop/systemd1/unit/var_2dlib_2dschroot_2dunion_2dunderlay_2dvivid_5cx2damd64_5cx2d422d4deb_5cx2d2a9d_5cx2d4364_5cx2dbba4_5cx2d04d126ec6cf2_2emount; interface=org.freedesktop.DBus.Properties; member=PropertiesChanged string "org.freedesktop.systemd1.Unit" array [ dict entry( string "ActiveState" variant string "active" ) dict entry( string "SubState" variant string "mounted" ) dict entry( string "InactiveExitTimestamp" variant uint64 1429097554602566 ) dict entry( string "InactiveExitTimestampMonotonic" variant uint64 10242667599 ) dict entry( string "ActiveEnterTimestamp" variant uint64 1429097829298497 ) dict entry( string "ActiveEnterTimestampMonotonic" variant uint64 10517363530 ) dict entry( string "ActiveExitTimestamp" variant uint64 1429097829292302 ) dict entry( string "ActiveExitTimestampMonotonic" variant uint64 10517357335 ) dict entry( string "InactiveEnterTimestamp" variant uint64 0 ) dict entry( string "InactiveEnterTimestampMonotonic" variant uint64 0 ) dict entry( string "Job" variant struct { uint32 1467033 object path "/org/freedesktop/systemd1/job/1467033" } ) dict entry( string "ConditionResult" variant boolean false ) dict entry( string "AssertResult" variant boolean false ) dict entry( string "ConditionTimestamp" variant uint64 0 ) dict entry( string "ConditionTimestampMonotonic" variant uint64 0 ) dict entry( string "AssertTimestamp" variant uint64 0 ) dict entry( string "AssertTimestampMonotonic" variant uint64 0 ) ] array [ ] signal sender=:1.0 -> dest=(null destination) serial=10268595 path=/org/freedesktop/systemd1; interface=org.freedesktop.systemd1.Manager; member=JobNew uint32 1467033 object path "/org/freedesktop/systemd1/job/1467033" string "var-lib-schroot-union-underlay-vivid\x2damd64\x2d422d4deb\x2d2a9d\x2d4364\x2dbba4\x2d04d126ec6cf2.mount" signal sender=:1.0 -> dest=(null destination) serial=10268596 path=/org/freedesktop/systemd1/unit/var_2dlib_2dschroot_2dunion_2dunderlay_2dvivid_5cx2damd64_5cx2d422d4deb_5cx2d2a9d_5cx2d4364_5cx2dbba4_5cx2d04d126ec6cf2_2emount; interface=org.freedesktop.DBus.Properties; member=PropertiesChanged string "org.freedesktop.systemd1.Mount" array [ dict entry( string "What" variant string "/dev/disk/by-uuid/980689ca-e7d9-4a99-8230-33b8b6e917cd" ) dict entry( string "Options" variant string "rw,relatime,discard,errors=remount-ro,data=ordered" ) dict entry( string "Type" variant string "ext4" ) dict entry( string "ControlPID" variant uint32 6235 ) dict entry( string "Result" variant string "exit-code" ) ] array [ string "ExecMount" string "ExecUnmount" string "ExecRemount" ] signal sender=:1.0 -> dest=(null destination) serial=10268597 path=/org/freedesktop/systemd1/unit/var_2dlib_2dschroot_2dunion_2dunderlay_2dvivid_5cx2damd64_5cx2d422d4deb_5cx2d2a9d_5cx2d4364_5cx2dbba4_5cx2d04d126ec6cf2_2emount; interface=org.freedesktop.DBus.Properties; member=PropertiesChanged string "org.freedesktop.systemd1.Unit" array [ dict entry( string "ActiveState" variant string "deactivating" ) dict entry( string "SubState" variant string "unmounting" ) dict entry( string "InactiveExitTimestamp" variant uint64 1429097554602566 ) dict entry( string "InactiveExitTimestampMonotonic" variant uint64 10242667599 ) dict entry( string "ActiveEnterTimestamp" variant uint64 1429097829298497 ) dict entry( string "ActiveEnterTimestampMonotonic" variant uint64 10517363530 ) dict entry( string "ActiveExitTimestamp" variant uint64 1429097829298992 ) dict entry( string "ActiveExitTimestampMonotonic" variant uint64 10517364025 ) dict entry( string "InactiveEnterTimestamp" variant uint64 0 ) dict entry( string "InactiveEnterTimestampMonotonic" variant uint64 0 ) dict entry( string "Job" variant struct { uint32 1467033 object path "/org/freedesktop/systemd1/job/1467033" } ) dict entry( string "ConditionResult" variant boolean false ) dict entry( string "AssertResult" variant boolean false ) dict entry( string "ConditionTimestamp" variant uint64 0 ) dict entry( string "ConditionTimestampMonotonic" variant uint64 0 ) dict entry( string "AssertTimestamp" variant uint64 0 ) dict entry( string "AssertTimestampMonotonic" variant uint64 0 ) ] array [ ] signal sender=:1.0 -> dest=(null destination) serial=10268598 path=/org/freedesktop/systemd1/job/1467033; interface=org.freedesktop.DBus.Properties; member=PropertiesChanged string "org.freedesktop.systemd1.Job" array [ dict entry( string "State" variant string "running" ) ] array [ ] signal sender=:1.0 -> dest=(null destination) serial=10268599 path=/org/freedesktop/systemd1; interface=org.freedesktop.systemd1.Manager; member=JobRemoved uint32 1467033 object path "/org/freedesktop/systemd1/job/1467033" string "var-lib-schroot-union-underlay-vivid\x2damd64\x2d422d4deb\x2d2a9d\x2d4364\x2dbba4\x2d04d126ec6cf2.mount" string "failed"