Problem
But for some reason I kept getting 28: No space left on device when I run apt-get update. I tried to solve this by trying apt-get clean, which seemed to work for a little bit but then still had the same issue.
No space left on device” is a prompt that is generated when your disk space is completely filled. There is a chance of encountering this issue, even when the disk space isn’t really full. This might happen when your server’s disk space runs out of Inodes.
查看占用
查看当前物理disk占用情况
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 55.4M 1 loop /snap/core18/1944
loop1 7:1 0 55.4M 1 loop /snap/core18/2128
loop2 7:2 0 61.8M 1 loop /snap/core20/1081
loop3 7:3 0 67.3M 1 loop /snap/lxd/21545
loop4 7:4 0 70.3M 1 loop /snap/lxd/21029
loop5 7:5 0 61.9M 1 loop /snap/core20/1169
loop6 7:6 0 32.4M 1 loop /snap/snapd/13270
loop7 7:7 0 32.3M 1 loop /snap/snapd/13170
sda 8:0 0 200G 0 disk
|-sda1 8:1 0 512M 0 part /boot/efi
|-sda2 8:2 0 1G 0 part /boot
`-sda3 8:3 0 48.5G 0 part
`-ubuntu--vg-ubuntu--lv 253:0 0 34.3G 0 lvm /
查看当前文件系统占用情况
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 1.9G 0 1.9G 0% /dev
tmpfs 394M 996K 393M 1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv 34G 24G 8.2G 75% /
tmpfs 2.0G 0 2.0G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup
/dev/sda2 976M 300M 609M 34% /boot
/dev/loop0 56M 56M 0 100% /snap/core18/1944
/dev/sda1 511M 5.3M 506M 2% /boot/efi
/dev/loop1 56M 56M 0 100% /snap/core18/2128
/dev/loop3 68M 68M 0 100% /snap/lxd/21545
/dev/loop2 62M 62M 0 100% /snap/core20/1081
/dev/loop4 71M 71M 0 100% /snap/lxd/21029
/dev/loop5 62M 62M 0 100% /snap/core20/1169
/dev/loop6 33M 33M 0 100% /snap/snapd/13270
/dev/loop7 33M 33M 0 100% /snap/snapd/13170
tmpfs 394M 176K 394M 1% /run/user/1000
查看LVM卷组的信息
$ sudo vgdisplay
--- Volume group ---
VG Name ubuntu-vg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size <48.50 GiB
PE Size 4.00 MiB
Total PE 12415
Alloc PE / Size 8768 / 34.25 GiB
Free PE / Size 3647 / <14.25 GiB
VG UUID OWAYr3-DITL-hFT3-eyHu-Yf2t-nKsP-62GTHG
清理APT缓存
View Cache Space
$ sudo du -sh /var/cache/apt
一旦决定清理apt缓存，清理命令如下：
$ sudo apt-get clean
apt clean 命令将删除保留在apt缓存中的所有软件包。 当然如果你本地网络并不快速，你也可以不用清理，避免安装软件时下载大量软件包耗费时间。
Get rid of packages that are no longer required [Recommended]
If you read the apt-get commands guide, you might have come across the apt-get command option ‘autoremove’.
This option removes libs and packages that were installed automatically to satisfy the dependencies of an installed package. If that package is removed, these automatically installed packages are useless in the system.
It also removes old Linux kernels that were installed from automatically in the system upgrade.
It’s a no-brainer command that you can run from time to time to make some free space on your Ubuntu system:
sudo apt-get autoremove
Clear systemd journal logs
The problem is that over the time, these logs take a considerable amount of disk space. You can check the log size with this command:
journalctl --disk-usage
Use Bleachbit
$ sudo apt install bleachbit
$ sudo bleachbit
Reference
- https://itsfoss.com/free-up-space-ubuntu-linux/
- https://askubuntu.com/questions/5980/how-do-i-free-up-disk-space
- https://www.cyberciti.biz/faq/linux-find-largest-file-in-directory-recursively-using-find-du/