This is the command mysqldiskusage that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
mysqldiskusage - Show Database Disk Usage
SYNOPSIS
mysqldiskusage [options] db ...
DESCRIPTION
This utility displays disk space usage for one or more databases. The utility optionally
displays disk usage for the binary log, slow query log, error log, general query log,
relay log, and InnoDB tablespaces. The default is to show only database disk usage.
If the command line lists no databases, the utility shows the disk space usage for all
databases.
Sizes displayed without a unit indicator such as MB are in bytes.
The utility determines the the location of the data directory by requesting it from the
server. For a local server, the utility obtains size information directly from files in
the data directory and InnoDB home directory. In this case, you must have file system
access to read those directories. Disk space usage shown includes the sum of all storage
engine- specific files such as the .MYI and .MYD files for MyISAM and the tablespace files
for InnoDB.
If the file system read fails, or if the server is not local, the utility cannot determine
exact file sizes. It is limited to information that can be obtained from the system
tables, which therefore should be considered an estimate. For information read from the
server, the account used to connect to the server must have the appropriate permissions to
read any objects accessed during the operation.
If information requested requires file system access but is not available that way, the
utility prints a message that the information is not accessible. This occurs, for example,
if you request log usage but the server is not local and the log files cannot be examined
directly.
To specify how to display output, use one of the following values with the --format
option:
· grid (default)
Display output in grid or table format like that of the mysql monitor.
· csv
Display output in comma-separated values format.
· tab
Display output in tab-separated format.
· vertical
Display output in single-column format like that of the \G command for the mysql
monitor.
To turn off the headers for csv or tab display format, specify the --no-headers option.
OPTIONS
mysqldiskusage accepts the following command-line options:
· --help
Display a help message and exit.
· --all, -a
Display all disk usage. This includes usage for databases, logs, and InnoDB
tablespaces.
· --binlog, -b
Display binary log usage.
· --empty, -m
Include empty databases.
· --format=<format>, -f<format>
Specify the output display format. Permitted format values are grid, csv, tab, and
vertical. The default is grid.
· --innodb, -i
Display InnoDB tablespace usage. This includes information about the shared InnoDB
tablespace as well as .idb files for InnoDB tables with their own tablespace.
· --logs, -l
Display general query log, error log, and slow query log usage.
· --no-headers, -h
Do not display column headers. This option applies only for csv and tab output.
· --quiet, -q
Suppress informational messages.
· --relaylog, -r
Display relay log usage.
· --server=<server>
Connection information for the server in the format:
<user>[:<passwd>]@<host>[:<port>][:<socket>] or <login-path>[:<port>][:<socket>].
· --verbose, -v
Specify how much information to display. Use this option multiple times to increase
the amount of information. For example, -v = verbose, -vv = more verbose, -vvv =
debug.
· --version
Display version information and exit.
For the --format option, the permitted values are not case sensitive. In addition, values
may be specified as any unambiguous prefix of a valid value. For example, --format=g
specifies the grid format. An error occurs if a prefix matches more than one valid value.
NOTES
You must provide connection parameters (user, host, password, and so forth) for an account
that has the appropriate privileges for all objects accessed during the operation.
The path to the MySQL client tools should be included in the PATH environment variable in
order to use the authentication mechanism with login-paths. This will allow the utility to
use the my_print_defaults tools which is required to read the login-path values from the
login configuration file (.mylogin.cnf).
EXAMPLES
To show only the disk space usage for the employees and test databases in grid format (the
default), use this command:
$ mysqldiskusage --server=root@localhost employees test
# Source on localhost: ... connected.
# Database totals:
+------------+--------------+
| db_name | total |
+------------+--------------+
| employees | 205,979,648 |
| test | 4,096 |
+------------+--------------+
Total database disk usage = 205,983,744 bytes or 196.00 MB
#...done.
To see all disk usage for the server in CSV format, use this command:
$ mysqldiskusage --server=root@localhost --format=csv -a -vv
# Source on localhost: ... connected.
# Database totals:
db_name,db_dir_size,data_size,misc_files,total
test1,0,0,0,0
db3,0,0,0,0
db2,0,0,0,0
db1,0,0,0,0
backup_test,19410,1117,18293,19410
employees,242519463,205979648,242519463,448499111
mysql,867211,657669,191720,849389
t1,9849,1024,8825,9849
test,56162,4096,52066,56162
util_test_a,19625,2048,17577,19625
util_test_b,17347,0,17347,17347
util_test_c,19623,2048,17575,19623
Total database disk usage = 449,490,516 bytes or 428.00 MB
# Log information.
# The general_log is turned off on the server.
# The slow_query_log is turned off on the server.
# binary log information:
Current binary log file = ./mysql-bin.000076
log_file,size
/data/mysql-bin.000076,125
/data/mysql-bin.000077,125
/data/mysql-bin.000078,556
/data/mysql-bin.000079,168398223
/data/mysql-bin.index,76
Total size of binary logs = 168,399,105 bytes or 160.00 MB
# Server is not an active slave - no relay log information.
# InnoDB tablespace information:
InnoDB_file,size,type,specificaton
/data/ib_logfile0,5242880,log file,
/data/ib_logfile1,5242880,log file,
/data/ibdata1,220200960,shared tablespace,ibdata1:210M
/data/ibdata2,10485760,shared tablespace,ibdata2:10M:autoextend
/data/employees/departments.ibd,114688,file tablespace,
/data/employees/dept_emp.ibd,30408704,file tablespace,
/data/employees/dept_manager.ibd,131072,file tablespace,
/data/employees/employees.ibd,23068672,file tablespace,
/data/employees/salaries.ibd,146800640,file tablespace,
/data/employees/titles.ibd,41943040,file tablespace,
Total size of InnoDB files = 494,125,056 bytes or 471.00 MB
#...done.
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