rpmdb: /var/lib/rpm/__db.001: No space left on device

Recently I faced below error during package installation on CentOS machine, and found that there was no free inode left on the server although there was lots of space available on the / partition. This error also comes when your server become out of space.

If you are also facing same issue, this tutorial will help you to solve this issue.

# yum install update
rpmdb: /var/lib/rpm/__db.001: No space left on device
error: db3 error(28) from dbenv->open: No space left on device
error: cannot open Packages index using db3 - No space left on device (28)
error: cannot open Packages database in /var/lib/rpm
CRITICAL:yum.main:

First of all check your disk space using below command.

# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        992M   56K  992M   1% /dev
tmpfs          1002M     0 1002M   0% /dev/shm
/dev/xvda1       20G  4.8G   15G  25% /

If you have enough space available on your / partition now check inodes using below command.

# df -i
Filesystem      Inodes  IUsed   IFree IUse% Mounted on
devtmpfs        253716    428  253288    1% /dev
tmpfs           256438      1  256437    1% /dev/shm
/dev/xvda1     1310720 162906 1147814   13% /

If you get the 100% disk usage and IUse  inodes usage then you will need to increase the disk space and inodes on the server.