Comment 16 for bug 1940916

Installing...

Setting up monitoring-plugins (2.3.1-1ubuntu2.1) ...

Checking the #DISK UNKNOWN cases ... all OK:

root@checkdisks-impish:~# /usr/lib/nagios/plugins/check_disk -w 10% -c 5% -p /reproduce-tmpfs
DISK OK - free space: /reproduce-tmpfs 2048 MB (100% inode=99%);| /reproduce-tmpfs=0MB;1843;1945;0;2048
root@checkdisks-impish:~# /usr/lib/nagios/plugins/check_disk -w 10% -c 5% -N tmpfs
DISK OK - free space: /dev 0 MB (99% inode=99%); /dev/lxd 0 MB (100% inode=99%); /dev/.lxd-mounts 0 MB (100% inode=99%); /proc/sys/kernel/random/boot_id 0 MB (99% inode=99%); /dev/shm 32106 MB (100% inode=99%); /run 12842 MB (99% inode=99%); /run/lock 5 MB (100% inode=99%); /sys/fs/cgroup 4 MB (100% inode=98%); /run/user/0 6421 MB (100% inode=99%); /reproduce-tmpfs 2048 MB (100% inode=99%); /reproduce-squashfs 2048 MB (100% inode=99%); /reproduce-tracefs 2048 MB (100% inode=99%); /run/snapd/ns 12842 MB (99% inode=99%);| /dev=0MB;0;0;0;0 /dev/lxd=0MB;0;0;0;0 /dev/.lxd-mounts=0MB;0;0;0;0 /proc/sys/kernel/random/boot_id=0MB;0;0;0;0 /dev/shm=0MB;28895;30500;0;32106 /run=0MB;11557;12199;0;12842 /run/lock=0MB;4;4;0;5 /sys/fs/cgroup=0MB;3;3;0;4 /run/user/0=0MB;5778;6099;0;6421 /reproduce-tmpfs=0MB;1843;1945;0;2048 /reproduce-squashfs=0MB;1843;1945;0;2048 /reproduce-tracefs=0MB;1843;1945;0;2048 /run/snapd/ns=0MB;11557;12199;0;12842
root@checkdisks-impish:~# /usr/lib/nagios/plugins/check_disk -w 10% -c 5% -N tmpfs -p /reproduce-tmpfs
DISK OK - free space: /reproduce-tmpfs 2048 MB (100% inode=99%);| /reproduce-tmpfs=0MB;1843;1945;0;2048
root@checkdisks-impish:~# /usr/lib/nagios/plugins/check_disk -w 10% -c 5% -X tmpfs -p /reproduce-tmpfs
DISK UNKNOWN - free space:|
root@checkdisks-impish:~# /usr/lib/nagios/plugins/check_disk -w 10% -c 5% -X squashfs -p /reproduce-tmpfs
DISK OK - free space: /reproduce-tmpfs 2048 MB (100% inode=99%);| /reproduce-tmpfs=0MB;1843;1945;0;2048
root@checkdisks-impish:~# /usr/lib/nagios/plugins/check_disk -w 10% -c 5% -X squashfs -N tmpfs
DISK OK - free space: /dev 0 MB (99% inode=99%); /dev/lxd 0 MB (100% inode=99%); /dev/.lxd-mounts 0 MB (100% inode=99%); /proc/sys/kernel/random/boot_id 0 MB (99% inode=99%); /dev/shm 32106 MB (100% inode=99%); /run 12842 MB (99% inode=99%); /run/lock 5 MB (100% inode=99%); /sys/fs/cgroup 4 MB (100% inode=98%); /run/user/0 6421 MB (100% inode=99%); /reproduce-tmpfs 2048 MB (100% inode=99%); /reproduce-squashfs 2048 MB (100% inode=99%); /reproduce-tracefs 2048 MB (100% inode=99%); /run/snapd/ns 12842 MB (99% inode=99%);| /dev=0MB;0;0;0;0 /dev/lxd=0MB;0;0;0;0 /dev/.lxd-mounts=0MB;0;0;0;0 /proc/sys/kernel/random/boot_id=0MB;0;0;0;0 /dev/shm=0MB;28895;30500;0;32106 /run=0MB;11557;12199;0;12842 /run/lock=0MB;4;4;0;5 /sys/fs/cgroup=0MB;3;3;0;4 /run/user/0=0MB;5778;6099;0;6421 /reproduce-tmpfs=0MB;1843;1945;0;2048 /reproduce-squashfs=0MB;1843;1945;0;2048 /reproduce-tracefs=0MB;1843;1945;0;2048 /run/snapd/ns=0MB;11557;12199;0;12842

#DISK CRITICAL cases ... OK too

root@checkdisks-impish:~# /usr/lib/nagios/plugins/check_disk -w 10 -c 10
DISK OK - free space: / 7718 MB (91% inode=99%); /dev/fuse 32070 MB (100% inode=99%); /dev/net/tun 32070 MB (100% inode=99%); /dev/full 32070 MB (100% inode=99%); /dev/null 32070 MB (100% inode=99%); /dev/random 32070 MB (100% inode=99%); /dev/tty 32070 MB (100% inode=99%); /dev/urandom 32070 MB (100% inode=99%); /dev/zero 32070 MB (100% inode=99%);| /=748MB;8457;8457;0;8467 /dev/fuse=0MB;32060;32060;0;32070 /dev/net/tun=0MB;32060;32060;0;32070 /dev/full=0MB;32060;32060;0;32070 /dev/null=0MB;32060;32060;0;32070 /dev/random=0MB;32060;32060;0;32070 /dev/tty=0MB;32060;32060;0;32070 /dev/urandom=0MB;32060;32060;0;32070 /dev/zero=0MB;32060;32060;0;32070
root@checkdisks-impish:~#

And after install snap for gnome-calculator:

root@checkdisks-impish:~# df -h
Filesystem Size Used Avail Use% Mounted on
default/containers/checkdisks-impish 8.3G 797M 7.5G 10% /
none 492K 4.0K 488K 1% /dev
tmpfs 100K 0 100K 0% /dev/lxd
tmpfs 100K 0 100K 0% /dev/.lxd-mounts
tmpfs 32G 0 32G 0% /dev/shm
tmpfs 13G 168K 13G 1% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 4.0M 0 4.0M 0% /sys/fs/cgroup
tmpfs 6.3G 0 6.3G 0% /run/user/0
tmpfs 2.0G 0 2.0G 0% /reproduce-tmpfs
squashfs 2.0G 0 2.0G 0% /reproduce-squashfs
tracefs 2.0G 0 2.0G 0% /reproduce-tracefs
snapfuse 44M 44M 0 100% /snap/snapd/14549
snapfuse 62M 62M 0 100% /snap/core20/1328
snapfuse 128K 128K 0 100% /snap/bare/5
snapfuse 66M 66M 0 100% /snap/gtk-common-themes/1519
snapfuse 248M 248M 0 100% /snap/gnome-3-38-2004/87
root@checkdisks-impish:~#
root@checkdisks-impish:~#
root@checkdisks-impish:~# /usr/lib/nagios/plugins/check_disk -w 10% -c 5%
DISK CRITICAL - free space: / 7668 MB (90% inode=99%); /dev/fuse 32070 MB (100% inode=99%); /dev/net/tun 32070 MB (100% inode=99%); /dev/full 32070 MB (100% inode=99%); /dev/null 32070 MB (100% inode=99%); /dev/random 32070 MB (100% inode=99%); /dev/tty 32070 MB (100% inode=99%); /dev/urandom 32070 MB (100% inode=99%); /dev/zero 32070 MB (100% inode=99%); /snap 7668 MB (90% inode=99%); /snap/snapd/14549 0 MB (0% inode=0%); /snap/core20/1328 0 MB (0% inode=0%); /snap/bare/5 0 MB (0% inode=0%); /snap/gtk-common-themes/1519 0 MB (0% inode=0%); /snap/gnome-3-38-2004/87 0 MB (0% inode=0%);| /=796MB;7618;8041;0;8465 /dev/fuse=0MB;28863;30466;0;32070 /dev/net/tun=0MB;28863;30466;0;32070 /dev/full=0MB;28863;30466;0;32070 /dev/null=0MB;28863;30466;0;32070 /dev/random=0MB;28863;30466;0;32070 /dev/tty=0MB;28863;30466;0;32070 /dev/urandom=0MB;28863;30466;0;32070 /dev/zero=0MB;28863;30466;0;32070 /snap=796MB;7618;8041;0;8465 /snap/snapd/14549=43MB;38;40;0;43 /snap/core20/1328=62MB;55;58;0;62 /snap/bare/5=0MB;0;0;0;0 /snap/gtk-common-themes/1519=65MB;58;61;0;65 /snap/gnome-3-38-2004/87=248MB;223;235;0;248