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 AIX® Version 7.1 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: