dumpfs Command

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Purpose

Dumps file system information.

Syntax

dumpfs { FileSystem | Device }

Description

The dumpfs command prints out the superblock, i-node map, and disk map information for the file system or special device specified. This listing is used to find out file system information. Primarily, the dumpfs command is for debugging purposes.

The dumpfs command can also run against a JFS2 snapshot. The dumpfs command prints out the superblock, snapshot map, and block map xtree copy for the specified snapshot.
Note: The dumpfs command will not work on UDF, NFS, or JFS diskettes.

Security

Attention RBAC users and Trusted AIX users: This command can perform privileged operations. Only privileged users can run privileged operations. For more information about authorizations and privileges, see Privileged Command Database in Security. For a list of privileges and the authorizations associated with this command, see the lssecattr command or the getcmdattr subcommand.

Examples

To print the information for /dev/hd4, enter:

dumpfs /dev/hd4