1 mysql root 24 Feb 4 11:31 xtrabackup_binlog_pos_innodb
1 mysql root 286 Feb 4 11:30 xtrabackup_binlog_info The following example shows all the related files in MySQL datadir: $ ls -lah /var/lib/mysql | grep xtrabackup_ The xtrabackup_logfile usually is the biggest file since it contains all transactions executed while the xtrabackup process copying the datadir to the destination. If you had performed a restoration via Percona Xtrabackup or MariaDB Backup, all files prefixed with xtrabackup_ can be removed from the MySQL datadir, as they are no longer necessary for the restoration. The same thing can be said about any huge older backups that are stored in the server. type f -size +5M -exec du -sh format, for example from audit.log.1 until audit.log.6. For example, files under /var/log/ are commonly the first place to look for unnecessary files: $ cd /var/log This is commonly the first step to do if MySQL server is down or unresponsive, or you have no binary logs enabled. Dropping old tables, or rebuilding a very big table.Things that we can do if we face this kind of problem are related to:
The temporary workaround is to clear up some disk space so MySQL can write to the disk and resume the operation. The above means we have to clear up some space in the root partition.
STARTING MYSQL DATABASE SERVER MYSQLD FULL
We can use the df command and specify the full path to the datadir to get the partition the data is stored: $ df -h /var/lib/mysqlįilesystem Size Used Avail Use% Mounted on In this example, our directory is located in the default location, /var/lib/mysql which is under the / partition. Look at the path as stated in the error to start with. MySQL can be configured to store data on a different disk or partition. Troubleshootingįirst of all, we have to determine which disk partition is full. In this blog post, we are going to look into ways to solve this issue for MySQL running in a Linux-based environment. The above simply means the MySQL server is out of disk space, and most of the time MySQL is stopped or stalled at this point.
STARTING MYSQL DATABASE SERVER MYSQLD CODE
OS error code 28: No space left on device Alternatively, we can use the error code to see the actual error with the perror command: $ perror 28 They are all reporting the same error code number which is 28. Error number 28 means 'No space left on device' Check also that the disk is not full or a disk quota exceeded. Check that your OS and file system support files of this size. #innodb_temp/temp_8.ibt failed at offset 81920, 16384 bytes should have been written, only 0 were written. Retry attempts for writing partial data failed. Some operating system error numbers are described at Make sure the file system supports this function. Check that the disk is not full or a disk quota exceeded. #innodb_temp/temp_8.ibt, desired size 16384 bytes. To turn it on again: fix the cause, then either restart the query logging by using "SET GLOBAL SLOW_QUERY_LOG=ON" or restart the MySQL server.įor InnoDB it looks like so: posix_fallocate(): Failed to preallocate data for file. Turning logging off for the server process. Message reprinted in 600 secs.įor slow query log you would see an error message like so: Could not use /var/log/mysql/mysql-slow.log for logging (error 28 - No space left on device). Message reprinted in 600 secs.įor relay log the error message looks like so: Disk is full writing './relay-bin.000007' (OS errno 28 - No space left on device). When the MySQL server ran out of disk space, you would see one of the following errors in your application (as well as in the MySQL error log): ERROR 3 (HY000) at line 1: Error writing file '/tmp/AY0Wn7vA' (Errcode: 28 - No space left on device)įor binary log the error message looks like so: Disk is full writing './binlog.000019' (OS errno 28 - No space left on device).
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