/dev/loop0 is 100 full no free space

Hello Everyone If you are getting this error ” Error writing file ‘/tmp/MYGtS5ZY’ (Errcode: 28 – No space left on device)” because we don’t have enough space to create temp files needed by MySQL on the server so request you to please do the needful to allocate some space for tmp files of MySql or delete previous tmp files so that our query can execute smoothly.

Current Disk Usage Information

	Device	Size	Used	Available	Percent Used	Mount Point
100%	/dev/loop0	2.3G	2.2G	0	100%	/tmp
45*	/dev/vda1	60G	25G	36G	41%	/

IO Statistics

Device	Trans./Sec	Blocks Read/sec	Blocks Written/Sec	Total Blocks Read	Total Blocks Written
vda	29.52	185.93	1910.38	4973342	51100360
scd0	0.00	0.00	0.00	36	0

If you are facing OOM (Out Of Memory errors) and start looking into memory utilization in your system using various commands like “df -a”, then you will notice locations like /dev/loop0, /dev/loop1 and so on have 100% memory utilization that is no free space is left.

Current Disk Usage – Image	Current Disk Usage
	Filesystem Size Used Avail Use% Mounted on devtmpfs 1.9G 0 1.9G 0% /dev tmpfs 1.9G 0 1.9G 0% /dev/shm tmpfs 1.9G 8.7M 1.9G 1% /run tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup /dev/vda1 60G 25G 36G 41% / /dev/loop0 2.3G 2.2G 0 100% /tmp

loop?

/dev/loop is a virtual / loop device which is basically a file in Linux system which acts as a block device. It is used for mounting disk images like Snap. /dev/loop is read only so the size is fixed once created and cannot be modified.

There are many instances of /dev/loop: