What should I do if Linux prompts that there is insufficient space?

Solution: 1. If the space usage of the disk partition "block" or "inode" reaches "100%", it can be solved by expanding the cloud hard disk; 2. If the file has been deleted because the handle is occupied If the corresponding space is not released, you can use the "kill -9 process number" command to end the process to release the disk space.

#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.

Problem description

When creating a file in the Linux operating system cloud server, a prompt of insufficient space: No space left on device

Possible reasons

• The disk partition block space usage reaches 100%.

• The disk partition inode space usage reaches 100%.

• The corresponding space of the deleted file is not released because the handle is occupied and not released.

• fs.inotify.max_user_watches value is exhausted

The disk partition block space usage reaches 100%

Execute the following command to check the disk space.

df -h

If the echo information is as follows, the block space usage is 100%.

Solution: Expand cloud disk capacity.

The disk partition inode space usage reaches 100%

Execute the following command to view the disk space.

df -i

If the echo information is as follows, it means that the inode space usage is 100%.

Solution: Expand cloud disk capacity.

The deleted file has the corresponding space not released because the handle is occupied and not released

• Log in to the server and execute df -h to check that the disk block space usage is 100%.

• Execute df -i to check that the disk inode space usage is low. As shown in the screenshot below, the inode space usage in this example is 1%.

• Execute du -sh to check the difference between the file occupied space and the available disk space.

Solution:

Execute the following command to find whether the current partition has uncleared handles document.

lsof |grep delete

Execute the following command to end the process and release disk space.

kill -9 进程编号

fs.inotify.max_user_watches value is exhausted

Linux operating system cloud server prompts insufficient space: No space left on device

Solution:

Execute the following command and edit the /etc/sysctl.conf file.

vi /etc/sysctl.conf

Add the following information:

fs.inotify.max_user_watches = 524288

Execute the following command to make the modification effective.

sysctl -p

Inotify is used to monitor file system events. By default, the maximum number of files created by each real user ID that can be monitored is 8192. The current inotify file monitoring limit can be obtained by executing the following command.

cat /proc/sys/fs/inotify/max_user_watches

If this limit is not enough to monitor all files, the limit must be increased to work properly.

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