fimage(1M) UNIX System V(System Administration Utilities) fimage(1M)
NAME
fimage - create, restore an image archive of a filesystem
SYNOPSIS
fimage -B [-dlmotuvAENS] bkjobid ofsname ofsdev ofslab descript
fimage -RC [-dlmotuvAENS] ofsname ofsdev refsname redev rsjobid descript
fimage -RF [-dlmotuvAENS] ofsname ofsdev descript
rsjobid:uid:date:type:name
[:[rename]:[inode]] ...
DESCRIPTION
The fimage command is invoked as a child process by other shell commands.
The command name, fimage, is read either from the bkhist.tab file or the
bkreg -m command and option. The -B, -R, -F, and -C options are passed
to fimage by the shell commands backup, restore, and urestore described
below. The other options are passed from the bkhist.tab file or the
bkreg -p command and option. The arguments are sent to fimage from
various locations in the backup service. fimage neither reads from
standard-input nor writes to standard-output or standard-error.
fimage -B is invoked as a child process by bkdaemon to perform an image
backup of the filesystem ofsname (the originating filesystem). All files
in ofsname are archived. The resulting backup is created in the format
described on volcopy(1M). The backup is recorded in the backup history
log, /etc/bkup/bkhist.tab.
fimage -RC and -RF are invoked as child processes by the rsoper command
to extract files from an image archive created by fimage -B. The
filesystem archive is assumed to be in the format described on volcopy
format.
If the -RC option is selected, the entire filesystem is restored.
If the -RF option is specified, only selected objects from the archive
are restored. Each 7-tuple, composed of
rsjobid:uid:date:type:name:rename:inode, specifies an object to be
restored from the filesystem archive. The 7-tuple objects come to fimage
from the rsstatus.tab file.
The arguments to fimage are defined as follows:
bkjobid
the job id assigned by backup. The method uses the bkjobid when
it creates history log and table-of-contents entries.
ofsname
the name of the file system that is to be backed up.
ofsdev the name of the block special device on which the file system
resides.
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ofslab the volume name on the file system [see labelit(1M)].
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
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.
refsname
if non-null, the name of the file system to be restored to instead
of ofsname. At least one of refsname and redev must be null.
redev if non-null, the partition to be restored to instead of ofsdev.
At least one of refsname and redev must be null.
rsjobid
the restore jobid assigned by restore or urestore.
uid the real uid of the user who requested the object to be restored.
It must match the uid of the owner of the object at the time the
archive was made, or it must be the superuser uid.
date the newest "last modification time" that is acceptable for a
restorable object. The object is restored from the archive
immediately older than this date. date is a hexadecimal
representation of the date and time provided by the time system
call [see time(2)].
type either F or D, indicating that the object is a file or a
directory, respectively.
name the name the object had in the file system archive.
rename the name that the object should be restored to (it may differ from
the name the object had in the file system archive). If omitted,
the object is restored to name.
inode the inode number of the object as it was stored in the file system
archive. [inode] is not used by ffile -R, and is provided only
for command-line compatibility with other restoration methods.
Options
Some options are only significant during fimage -B invocations; they are
accepted but ignored during fimage -R invocations because the command is
invoked and options are specified automatically by restore. These
options are flagged with an asterisk (*).
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fimage(1M) UNIX System V(System Administration Utilities) fimage(1M)
d* Inhibits recording the archive in the backup history log.
l* Creates a long form of the backup history log that includes a
table-of-contents for the archive. This includes the data used
to generate a listing of each file in the archive (like that
produced by the ls -l command).
m* Mounts the originating filesystem read-only before starting the
backup and remounts it with its original permissions after
completing the backup. Cannot be used with root or /usr
filesystems.
o Permits the user to override media insertion requests [see
getvol(1M) and the description of the -o option].
t* Creates a table of contents for the backup on additional media
instead of in the backup history log.
u* Unmounts the originating filesystem before the backup is begun.
After the backup is complete, remounts the filesystem under its
original permission. This option cannot be used with a root or
usr filsystem. The -u option overrides the -m 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 Do not prompt the user for removable media operations
(automated operation).
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 bkoper.
Therefore, ffile 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, etc.) to backup.
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fimage(1M) UNIX System V(System Administration Utilities) fimage(1M)
DIAGNOSTICS
The exit codes for ffile are the following:
0 successful completion of the task
1 one or more parameters to ffile are invalid.
2 an error has occurred which caused ffile to fail to complete all
portions of its task.
FILES
/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), bkoper(1M) device.tab(4), fdp(1), ffile(1), fimage(1),
getvol(1M), incfile(1), labelit(1M), libbrmeth(3), ls(1), restore(1M),
rsoper(1M), time(2), urestore(1), volcopy(1M)
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