gpfilespace commands creates a filespace using a configuration file that defines per-segment file system locations. Filespaces describe the physical file system resources to be used by a tablespace. Usage gpfilespace [connection_option ...] [-l logfile_directory] [-o [output_file_name]] gpfilespace [connection_option ...] [-l logfile_directory] -c fs_config_file gpfilespace -v | -? Description A tablespace requires a file system location to store its database files. In Greenplum Database, the master and each segment (primary and mirror) needs its own distinct storage location. This collection of file system locations for all components in a Greenplum system is referred to as a filespace. Once a filespace is defined, it can be used by one or more tablespaces. When used with the -o option, the gpfilespace utility looks up your system configuration information in the Greenplum Database catalog tables and prompts you for the appropriate file system locations needed to create the filespace. It then outputs a configuration file that can be used to create a filespace. If a file name is not specified, a gpfilespace_config_# file will be created in the current directory by default. Once you have a configuration file, you can run gpfilespace with the -c option to create the filespace in Greenplum Database. Options -c | --config fs_config_file A configuration file containing: •An initial line denoting the new filespace name. For example: filespace:myfs •One line each for the master, the primary segments, and the mirror segments. A line describes a file system location that a particular segment database instance should use as its data directory location to store database files associated with a tablespace. Each line is in the format of: hostname:dbid:/filesystem_dir/seg_datadir_name -l | --logdir logfile_directory The directory to write the log file. Defaults to ~/gpAdminLogs. -o | --output output_file_name The directory location and file name to output the generated filespace configuration file. You will be prompted to enter a name for the filespace, a master file system location, the primary segment file system locations, and the mirror segment file system locations. For example, if your configuration has 2 primary and 2 mirror segments per host, you will be prompted for a total of 5 locations (including the master). The file system locations must exist on all hosts in your system prior to running the gpfilespace utility. The utility will designate segment-specific data directories within the location(s) you specify, so it is possible to use the same location for multiple segments. However, primaries and mirrors cannot use the same location. After the utility creates the configuration file, you can manually edit the file to make any required changes to the filespace layout before creating the filespace in Greenplum Database. -v | --version (show utility version) Displays the version of this utility. -? | --help (help) Displays the utility usage and syntax. Connection Options -h host | --host host The host name of the machine on which the Greenplum master database server is running. If not specified, reads from the environment variable PGHOST or defaults to localhost. -p port | --port port The TCP port on which the Greenplum master database server is listening for connections. If not specified, reads from the environment variable PGPORT or defaults to 5432. -U username | --username superuser_name The database superuser role name to connect as. If not specified, reads from the environment variable PGUSER or defaults to the current system user name. Only database superusers are allowed to create filespaces. -W | --password Force a password prompt. Examples Create a filespace configuration file. You will be prompted to enter a name for the filespace, a master file system location, the primary segment file system locations, and the mirror segment file system locations. For example, if your configuration has 2 primary and 2 mirror segments per host, you will be prompted for a total of 5 locations (including the master). The file system locations must exist on all hosts in your system prior to running the gpfilespace utility: $ gpfilespace -o . Enter a name for this filespace > fastdisk Checking your configuration: Your system has 2 hosts with 2 primary and 2 mirror segments per host. Configuring hosts: [sdw1, sdw2] Please specify 2 locations for the primary segments, one per line: primary location 1> /gp_pri_filespc primary location 2> /gp_pri_filespc Please specify 2 locations for the mirror segments, one per line: mirror location 1> /gp_mir_filespc mirror location 2> /gp_mir_filespc Enter a file system location for the master: master location> /gp_master_filespc Example filespace configuration file: filespace:fastdisk mdw:1:/gp_master_filespc/gp-1 sdw1:2:/gp_pri_filespc/gp0 sdw1:3:/gp_mir_filespc/gp1 sdw2:4:/gp_mir_filespc/gp0 sdw2:5:/gp_pri_filespc/gp1 Execute the configuration file to create the filespace in Greenplum Database: $ gpfilespace -c gpfilespace_config_1 |
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