readdump(8)readdump(8)NAMEreaddump - Utility to examine dumpfiles created by the Coda backup
facility
SYNOPSISreaddump [dumpfile]
DESCRIPTION
The readdump program is an interactive facility to allow the user to
get information from a dump file produced by the Coda backup mechanism.
For now it is simply a way of looking at the information in a dump
file. One cannot use it to modify the dump file.
The readdump program supports the following commands:
openDumpFile <dumpfile>
showHeader
showVolumeDiskData
setIndex <index type>
nextVnode
skipVnodes <nVnodes>
quit
readdump uses the ci command interface, which allows the use of unique
prefixes for commands. Unspecified parameters will be prompted for, and
default values can be used. The showHeader command prints out the
header of the dump, which is seperate from the header of the volume
that was dumped. The showVolumeDiskData prints out the header of the
volume.
The dump contains two streams of vnodes, one for directories and one
for files and symbolic links. The setIndex command specifies to read‐
dump which stream you wish to examine. Once an index has been speci‐
fied, the nextVnode command displays the next Vnode (object) in the
stream. Note that movement through the stream is one-directional. To
revisit a Vnode, use the setIndex command to reset the program back to
the beginning of the stream. One can jump through the index by use of
the skipVnodes command, which takes the number of vnodes to skip, and
reads past (without displaying) that many vnodes in the stream.
Future Work
Usage of this facility should suggest more commands to help administra‐
tors parse dumpfiles. In particular, a command to seek ahead to a spec‐
ified offset in the dump would be useful.
SEE ALSO
merge (8), backup (8), volutil (8), Coda Manual
AUTHOR
David C. Steere, 1991, Created
readdump(8)
