fdp(1M) UNIX System V(System Administration Utilities) fdp(1M)
NAME
fdp - create, or restore from, a full file system archive
SYNOPSIS
fdp -B [-dovAENS] [-c count] bkjobid odpname odpdev odplab descript
fdp -RC [-dovAENS] [-c count] odpname odpdev redpname redev rsjobid
descript
DESCRIPTION
The fdp command is invoked as a child process by other shell commands.
The command name, fdp, is read either from the bkhist.tab file or the
bkreg -m command and option. The -B, -R, and -C options are passed to
fdp by the shell commands backup, and restore. The other options are
passed from the bkhist.tab file or the bkreg -p command and option. The
arguments are sent to fdp from various locations in the backup service.
fdp -B is invoked as a child process by the backdaemon command to perform
a backup of the data partition odpdev (the originating data partition).
All blocks in the data partition are archived. The resulting backup is
created in the format described on dd(1). The backup is recorded in the
backup history log, /etc/bkup/bkhist.tab.
fdp -RC is invoked as a child process by the rsoper command to restore
the entire data partition from an archive created by fdp -B. The data
partition archive is assumed to be in the format described on dd(1).
dd(1) format.
The arguments to fdp are defined as follows:
bkjobid
the job id assigned by backup. The method uses the bkjobid when
it creates history log entries.
odpname
the name of the data partition that is to be backed up. Unused by
fdp, but supplied by backup for command-line compatibility with
other archiving methods.
odpdev the name of the block special device on which the data partition
resides.
odplab the volume name on the file system [see labelit(1M)]. Unused by
fdp, but supplied by backup for command-line compatibility with
other archiving methods.
descript
is a description for a destination device in the form:
dgroup:dname:dchar:dlabels
dgroup specifies a device group [see devgroup.tab(4)].
dname specifies a particular device name [see device.tab(4)].
dchars specifies characteristics associated with the device. If
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fdp(1M) UNIX System V(System Administration Utilities) fdp(1M)
specified, dchar overrides the defaults for the specified device
and group. [See device.tab(4) for a further description of device
characteristics].
dlabels specifies the volume names for the media to be used for
reading or writing the archive.
rsjobid
the job id assigned by restore.
redev if non-null, the partition to be restored to instead of ofsdev.
redpname
unused, but provided for consistency with other methods.
Options
Some options are only significant during fdp -B invocations; they are
accepted but ignored during fdp -R invocations because the command is
invoked and options are specified automatically by restore. These
options are flagged with an asterisk (*).
c*count Archives or restores only the first count (512 byte) blocks of
data in the data partition.
d* Inhibits recording the archive in the backup history log.
o Permits the user to override media insertion requests [see
getvol(1M) and the description of the -o option].
v* Validates the archive as it is written. A checksum is computed
as the archive is being written; as each medium is completed,
it is re-read and the checksum recomputed to verify that each
block is readable and correct. If either check fails, the
medium is considered unreadable. If -A has been specified, the
archiving operation fails; otherwise, the operator is prompted
to replace the failed medium.
A Establishes automated mode, (that is, does not prompt the user
to insert or remove media).
E* Reports an estimate of media usage for the archive; then
performs the backup.
N* Reports an estimate of media usage for the archive; does not
perform the backup.
S Displays a period (.) for every 100 (512 byte) blocks read-from
or written-to the archive on the destination device.
User Interactions
The connection between an archiving method and backup is more complex
than a simple fork/exec or pipe. The backup command is responsible for
all interactions with the user, either directly, or through the bkoper
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fdp(1M) UNIX System V(System Administration Utilities) fdp(1M)
command. Therefore, fdp neither reads from standard-input nor writes to
standard-output or standard-error. A method library must be used [see
libbrmeth(3)] to communicate reports (estimates, filenames, periods,
status, and so on) to backup.
DIAGNOSTICS
The exit codes for fdp are the following:
0 successful completion of the task
1 one or more parameters to fdp are invalid.
2 an error has occurred which caused fdp to fail to complete all
portions of its task.
FILES
/etc/bkup/bkexcept.tab
lists the files that are to be excluded from an
incremental file system backup.
/etc/bkup/bkhist.tab
lists the labels of all volumes that have been used for
backup operations.
/etc/bkup/rsstatus.tab
tracks the status ofall restore requests from users.
/etc/bkup/bklog logs errors generated by the backup methods and the
backup command
/etc/bkup/rslog logs errors generated by the restore methods and the
restore command
$TMP/filelist$$ temporarily stores a table of contents for a backup
archive.
SEE ALSO
backup(1M), device.tab(4), fdp(1), ffile(1), fimage(1), getvol(1M),
incfile(1), labelit(1M), libbrmeth(3), prtvtoc(1M), rsoper(1M)
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