知道为什么flatpak update会失败吗？我确实有很多可用空间。
$ flatpak update
Looking for updates...
Required runtime for org.inkscape.Inkscape/x86_64/stable (runtime/org.gnome.Platform/x86_64/3.34) found in remote flathub
Do you want to install it? [y/n]: y
Installing in system:
org.freedesktop.Platform.Locale/x86_64/18.08 flathub 8d2c256bc426
org.freedesktop.Platform.VAAPI.Intel/x86_64/1.6 flathub 82006efc71d3
org.freedesktop.Platform.ffmpeg/x86_64/1.6 flathub d757f762489e
org.gnome.Platform.Locale/x86_64/3.28 flathub 2823e3d81b74
org.gnome.Platform.Locale/x86_64/3.30 flathub d3ff07ad7633
org.freedesktop.Platform.VAAPI.Intel/x86_64/18.08 flathub bc9426ac6a1c
org.freedesktop.Platform.html5-codecs/x86_64/18.08 flathub 3e019185d277
org.gnome.Platform/x86_64/3.34 flathub ab1f439a6e9e
org.gnome.Platform.Locale/x86_64/3.34 flathub e20da7a61852
org.freedesktop.Platform.GL.default/x86_64/19.08 flathub 250415c36700
org.freedesktop.Platform.GL.nvidia-430-50/x86_64/1.4 flathub f88e0a854047
org.gtk.Gtk3theme.Ambiance/x86_64/3.22 flathub 73fed99df212
org.freedesktop.Platform.VAAPI.Intel/x86_64/19.08 flathub 8db05639a302
org.freedesktop.Platform.openh264/x86_64/19.08 flathub 563e6c1a7173
Updating in system:
org.freedesktop.Platform/x86_64/18.08 flathub 4cf11470343e
org.audacityteam.Audacity.Codecs/x86_64/stable flathub 2936bff19b0d
org.audacityteam.Audacity.Locale/x86_64/stable flathub ab86e963d75f
net.sourceforge.xournal/x86_64/stable flathub e25def6b0359
net.sourceforge.xournal.Locale/x86_64/stable flathub 0a53eaa252ad
org.inkscape.Inkscape/x86_64/stable flathub 351ad9649e37
org.inkscape.Inkscape.Locale/x86_64/stable flathub 65939c95a615
Is this ok [y/n]: y
Updating: org.freedesktop.Platform/x86_64/18.08 from flathub
Error: Failed to update org.freedesktop.Platform/x86_64/18.08: min-free-space-size 500MB would be exceeded
Skipping org.freedesktop.Platform.Locale/x86_64/18.08 due to previous error
Updating: org.audacityteam.Audacity.Codecs/x86_64/stable from flathub
Warning: Failed to update org.audacityteam.Audacity.Codecs/x86_64/stable: min-free-space-size 500MB would be exceeded
Updating: org.audacityteam.Audacity.Locale/x86_64/stable from flathub
Warning: Failed to update org.audacityteam.Audacity.Locale/x86_64/stable: min-free-space-size 500MB would be exceeded
Updating: net.sourceforge.xournal/x86_64/stable from flathub
Error: Failed to update net.sourceforge.xournal/x86_64/stable: min-free-space-size 500MB would be exceeded
Skipping net.sourceforge.xournal.Locale/x86_64/stable due to previous error
Installing: org.freedesktop.Platform.VAAPI.Intel/x86_64/1.6 from flathub
Warning: Failed to install org.freedesktop.Platform.VAAPI.Intel/x86_64/1.6: min-free-space-size 500MB would be exceeded
Installing: org.freedesktop.Platform.ffmpeg/x86_64/1.6 from flathub
Warning: Failed to install org.freedesktop.Platform.ffmpeg/x86_64/1.6: min-free-space-size 500MB would be exceeded
Installing: org.gnome.Platform.Locale/x86_64/3.28 from flathub
Warning: Failed to install org.gnome.Platform.Locale/x86_64/3.28: min-free-space-size 500MB would be exceeded
Installing: org.gnome.Platform.Locale/x86_64/3.30 from flathub
Warning: Failed to install org.gnome.Platform.Locale/x86_64/3.30: min-free-space-size 500MB would be exceeded
Skipping org.freedesktop.Platform.VAAPI.Intel/x86_64/18.08 due to previous error
Skipping org.freedesktop.Platform.html5-codecs/x86_64/18.08 due to previous error
Installing: org.gnome.Platform/x86_64/3.34 from flathub
Error: Failed to install org.gnome.Platform/x86_64/3.34: min-free-space-size 500MB would be exceeded
Skipping org.gnome.Platform.Locale/x86_64/3.34 due to previous error
Skipping org.freedesktop.Platform.GL.default/x86_64/19.08 due to previous error
Skipping org.freedesktop.Platform.GL.nvidia-430-50/x86_64/1.4 due to previous error
Skipping org.gtk.Gtk3theme.Ambiance/x86_64/3.22 due to previous error
Skipping org.freedesktop.Platform.VAAPI.Intel/x86_64/19.08 due to previous error
Skipping org.freedesktop.Platform.openh264/x86_64/19.08 due to previous error
Skipping org.inkscape.Inkscape/x86_64/stable due to previous error
Skipping org.inkscape.Inkscape.Locale/x86_64/stable due to previous error
error: There were one or more errors
仅供参考这里有一个看似同样的问题，据称他自己解决了，只是我不明白他究竟是如何做到的：
确实是普通的 ENOSPC；我只是在输出中错过了根挂载
pydf。清理足够的空间后，错误消失了。
答案1
使用sudo flatpak update后你就会没事。