This is the setup. I started seeing this message today from Linux Manjaro installed on Virtual box under windows 10. The issue is that I have lots of disk space, both allocated for the Linux and also for windows 10 itself and for the mounted disk in Linux so I can access my windows files from Linux.
So I do not understand what causes this message to come up.
On Linux this is the output of df -H
>df -H /
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 68G 37G 28G 58% /
And
>df -H
Filesystem Size Used Avail Use% Mounted on
dev 23G 0 23G 0% /dev
run 23G 1.1M 23G 1% /run
/dev/sda1 68G 43G 22G 67% /
tmpfs 23G 25k 23G 1% /dev/shm
tmpfs 23G 4.8G 18G 22% /tmp
tmpfs 4.5G 115k 4.5G 1% /run/user/1000
public_html 4.1T 1.1T 3.0T 26% /mnt/g/public_html
And
sudo du -s -h -x /*
0 /bin
76M /boot
20K /desktopfs-pkgs.txt
0 /dev
14M /etc
11G /home
0 /lib
0 /lib64
16K /lost+found
8.0K /mnt
793M /opt
du: cannot read directory '/proc/520610/task/520610/net': Invalid argument
du: cannot read directory '/proc/520610/net': Invalid argument
du: cannot read directory '/proc/520665/task/520665/net': Invalid argument
du: cannot read directory '/proc/520665/net': Invalid argument
du: cannot access '/proc/520912/task/520912/fd/4': No such file or directory
du: cannot access '/proc/520912/task/520912/fdinfo/4': No such file or directory
du: cannot access '/proc/520912/fd/3': No such file or directory
du: cannot access '/proc/520912/fdinfo/3': No such file or directory
0 /proc
328K /root
8.0K /rootfs-pkgs.txt
1.1M /run
0 /sbin
12K /srv
0 /sys
4.4G /tmp
18G /usr
5.3G /var
>
I am running latest Manjaro, MATE desktop version (not xfce).
lsb_release -a
LSB Version: n/a
Distributor ID: ManjaroLinux
Description: Manjaro Linux
Release: 22.0.5
Codename: Sikaris
The last entry above is on /mnt/g` which is windows. As you can see there is lots of free space, right?
The other strange thing, is that I am running a long script on Linux to compile files (it is running on the windows disk) and it is still running with no errors and no problems.
This is also the Virtual Box setting for this Linux virtual machine. I allocated 64 GB disk for it when I created it. (I requested the whole space be pre-allocated instead of the other option of dynamic expansion)
The Virtual Box I am running is 6.1.34.
On my PC, I have tons of free space on C:\ where the Virtual box lives and on G:\ which is the disk mounted from linux. I have 1.22 TB free space on C:\ and 2.7 TB free space on G:\
Here is the actual .vdi file (virtual box) on windows
I also checked /var/log on Linux to see if there is a log file which might contain more information, but there is no log file updated as of today March 27, 2023 which is when I just got this pop-up window message
>pwd
/var/log
>ls -lrt
total 180
drwx------ 2 root root 4096 Apr 21 2022 audit
drwxr-xr-x 2 root root 4096 Jun 6 2022 gssproxy
drwxr-xr-x 2 root root 4096 Jun 10 2022 cups
drwxr-xr-x 2 root root 4096 Oct 19 09:12 old
drwx------ 2 root root 4096 Jan 4 04:56 private
-rw-rw-r-- 1 root utmp 0 Feb 6 23:08 lastlog
-rw-rw---- 1 root utmp 0 Feb 6 23:08 btmp.1
drwxr-sr-x+ 4 root systemd-journal 4096 Feb 6 23:12 journal
-rw-rw---- 1 root utmp 0 Mar 1 00:00 btmp
-rw-r--r-- 1 root root 71354 Mar 26 11:55 pacman.log
-rw-r--r-- 1 root root 24980 Mar 26 11:55 Xorg.0.log.old
drwx--x--x 2 root lightdm 4096 Mar 26 11:57 lightdm
-rw-rw-r-- 1 root utmp 14592 Mar 26 11:57 wtmp
-rw-r--r-- 1 root root 24799 Mar 26 16:29 Xorg.0.log
I do not know which application on Linux is actually producing this pop-up message about low disk space. If I can find the application which generated this message, this will help find what is going on.
Any idea what causes this message? is it Linux getting confused, or Virtual box problem?
if there is additional information I can give please let me know.
Fyi, I just added question on this at Manjaro foum asking if someone knows which application on Manjaro generated this message.
Update
Here is the info requested
>sudo parted /dev/sda unit MiB print
[sudo] password for me:
Model: ATA VBOX HARDDISK (scsi)
Disk /dev/sda: 65536MiB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1.00MiB 65531MiB 65530MiB primary ext4 boot
And
>sudo fdisk -l /dev/sda
Disk /dev/sda: 64 GiB, 68719476736 bytes, 134217728 sectors
Disk model: VBOX HARDDISK
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x47f9fdb6
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 134207009 134204962 64G 83 Linux
>
btw, someone at the Manjaro forum said this message could be generated by "Free Space Notifier" service. But I am still unable to find if this is running or what it is.
I found similar question for Ubuntu the-volume-filesystem-root-has-only-0-bytes-disk-space-remaining but unlike the above where the system was really low on space, mine is not.
Update
Added info requested
>df -Thi
Filesystem Type Inodes IUsed IFree IUse% Mounted on
dev devtmpfs 5.3M 451 5.3M 1% /dev
run tmpfs 5.3M 638 5.3M 1% /run
/dev/sda1 ext4 4.0M 794K 3.3M 20% /
tmpfs tmpfs 5.3M 7 5.3M 1% /dev/shm
tmpfs tmpfs 1.0M 131K 894K 13% /tmp
tmpfs tmpfs 1.1M 113 1.1M 1% /run/user/1000
public_html vboxsf 1000 -976K 977K - /mnt/g/public_html
Update 3/29/2023
Now I am getting message that it has only 841 MB disk remaining
But why?
>df -H
Filesystem Size Used Avail Use% Mounted on
dev 23G 0 23G 0% /dev
run 23G 1.1M 23G 1% /run
/dev/sda1 68G 37G 28G 58% /
tmpfs 23G 25k 23G 1% /dev/shm
tmpfs 23G 4.8G 18G 22% /tmp
tmpfs 4.5G 123k 4.5G 1% /run/user/1000
public_html 4.1T 1.1T 3.0T 26% /mnt/g/public_html
xwininfoandxpropto get the parent process' PID as in What process created this X11 window?df -Thito check). Do you have filesystem quotas enabled (either in linux or whatever the equivalent is in windows)? Finally "zero disk space" may not necessarily mean zero disk space - some (badly written) programs interpret almost ANY write error as "disk full".