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icat-database-checker

This script checks the iRODS ICAT database for unexpected issues, specifically:

  • Referential integrity issues
  • Timestamp order issues (creation timestamp is later than modification timestamp)
  • Creation or modification timestamps that refer to the future
  • Object names that contain characters which are not handled correctly on XML-based clients, such as the python-irods-client (See irods/irods#4132 for details).
  • Data objects with empty names
  • Collection and data object names with trailing slashes (See irods/irods#3892)
  • Files in vaults that have a directory name which is inconsistent with the collection name
  • Hard links: multiple data objects refer to the same physical file
  • Duplicate replica: multiple replica entries for the same file
  • Data objects with too few replicas (the default minimum is one replica)
  • Missing indexes

The present version of the script is suitable for Postgresql databases. It is compatible with iRODS 4.2.x and 4.3.x.

Requirements

It is recommended to use Python 3.6 or higher. Older Python versions are not supported.

You'll also need tools to build the psycopg2 package. Example command for CentOS 7:

sudo yum -y install python3 python3-devel python-virtualenv gcc git postgresql-devel postgresql-libs

Example command for Ubuntu 20.04 LTS:

sudo apt install -y python3.8 python3.8-venv python3.8-dev python3-wheel gcc libpq5

Installation

The script can be installed virtual environment, typically in the irods account on an iRODS server.

If the system doesn't have the virtualenv module yet, install it first: sudo python3 -m pip install virtualenv

Now create a virtual environment and install the tool:

  • python3 -m virtualenv venv
  • source venv/bin/activate
  • pip3 install ./icat-database-checker

Usage

usage: icat-database-checker [-h] [--config-file CONFIG_FILE] [-m {human,csv}]
                             [-v]
                             [--run-test {ref_integrity,timestamps,names,hardlinks,minreplicas,path_consistency,indexes,all}]
                             [--min-replicas MIN_REPLICAS]

Performs a number of sanity checks on the iRODS ICAT database

optional arguments:
  -h, --help            show this help message and exit
  --config-file CONFIG_FILE
                        Location of the irods server_config file (default:
                        etc/irods/server_config.json )
  -m {human,csv}        Type of output
  -v                    Verbose mode
  --run-test {ref_integrity,timestamps,names,hardlinks,minreplicas,path_consistency,all}
                        Test to run (default: all)
  --min-replicas MIN_REPLICAS
                        Minimum number of replicas that a dataobject must have
                        (default: 1).
  --data-object-prefix DATA_OBJECT_PREFIX
                        Only check data objects with a particular prefix. The
                        referential integrity and hard links tests do not
                        support this option yet, and will ignore it.

By default, the script retrieves the database connection parameters from the iRODS server configuration file. It is possible to override the server config file location using the --config-file parameter, like so: ./icat-database-checker --config-file my-server-config.json .

By default, the script only displays (potential) issues. Use the -v (verbose mode) switch to print additional information about which checks are performed.