filesystem eventually becomes read-only

[Noah]

Hi,

I have an ubuntu server that its file system eventually claims to be 
readonly and not sure why that happens?  The drives are not initially 
mounted read only.   Something changes over time to make my root 
partition read-only and not sure how that happens.

If I power cycle or reboot the server again I never get this complaint. 
  What is making a rw filesystem intermittently to a read only filesystem?

--- here is the error at login when the file system is read-only ---

(anon):184: read-only file system: 
/tmp/p10k-instant-prompt-output-noah-2243905
(anon):13: read-only file system: 
/tmp/gitstatus.POWERLEVEL9K.1000.2243905.1617162523.1.lock

[ERROR]: gitstatus failed to initialize.

   Your Git prompt may disappear or become slow.

   Add the following parameter to ~/.zshrc for extra diagnostics on error:

     GITSTATUS_LOG_LEVEL=DEBUG

   Restart Zsh to retry gitstatus initialization:

     exec zsh
/home/noah/.jenv/libexec/jenv-refresh-plugins: line 43: 
/home/noah/.jenv/jenv.version: Read-only file system
zsh: locking failed for /home/noah/.zsh_history: read-only file system: 
reading anyway

--- snip ---


❯ uname -a
Linux nuc2 5.4.0-70-generic #78-Ubuntu SMP Fri Mar 19 13:29:52 UTC 2021 
x86_64 x86_64 x86_64 GNU/Linux

❯ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.2 LTS"

❯ df -kh
Filesystem                                  Size  Used Avail Use% Mounted on
udev                                         32G     0   32G   0% /dev
tmpfs                                       6.3G  2.4M  6.3G   1% /run
/dev/sda2                                   1.9T  627G  1.2T  36% /
tmpfs                                        32G   16K   32G   1% /dev/shm
tmpfs                                       5.0M  8.0K  5.0M   1% /run/lock
tmpfs                                        32G     0   32G   0% 
/sys/fs/cgroup
/dev/sda1                                   511M  7.9M  504M   2% /boot/efi
/dev/loop1                                  100M  100M     0 100% 
/snap/core/10908
/dev/loop3                                   56M   56M     0 100% 
/snap/core18/1988
/dev/loop5                                  9.5M  9.5M     0 100% 
/snap/helm/325
/dev/loop4                                  163M  163M     0 100% 
/snap/gnome-3-28-1804/145
/dev/loop7                                  9.2M  9.2M     0 100% 
/snap/kubectl/1842
/dev/loop6                                  9.2M  9.2M     0 100% 
/snap/kubectl/1826
/dev/loop0                                  100M  100M     0 100% 
/snap/core/10859
/dev/loop8                                   69M   69M     0 100% 
/snap/lxd/19823
/dev/loop9                                   73M   73M     0 100% 
/snap/lxd/19766
/dev/loop10                                  65M   65M     0 100% 
/snap/gtk-common-themes/1514
/dev/loop11                                 175M  175M     0 100% 
/snap/joplin-james-carroll/59
/dev/loop12                                 175M  175M     0 100% 
/snap/joplin-james-carroll/58
/dev/loop13                                  62M   62M     0 100% 
/snap/core20/904
/dev/loop14                                  33M   33M     0 100% 
/snap/snapd/11107
/dev/loop15                                 186M  186M     0 100% 
/snap/zaproxy/5
/dev/loop16                                  33M   33M     0 100% 
/snap/snapd/11402
/dev/loop17                                 244M  244M     0 100% 
/snap/gnome-3-38-2004/39
/dev/loop18                                 244M  244M     0 100% 
/snap/gnome-3-38-2004/31
/dev/loop19                                 9.7M  9.7M     0 100% 
/snap/helm/328
{ip}:/mnt/DroboFS/Shares/Music      64T  7.7T   57T  12% /media/Music
{ip}:/mnt/DroboFS/Shares/Audio      64T  7.7T   57T  12% /media/Audio
{ip}:/mnt/DroboFS/Shares/Videos     64T  7.7T   57T  12% /media/Videos
{ip}:/mnt/DroboFS/Shares/Pictures   64T  7.7T   57T  12% /media/pics
tmpfs                                       6.3G   16K  6.3G   1% 
/run/user/125
/dev/loop20                                  56M   56M     0 100% 
/snap/core18/1997
tmpfs                                       6.3G  8.0K  6.3G   1% 
/run/user/1000

--- snip ---

Cheers,
Noah