volcopy makes a literal copy of the ufs filesystem using a blocksize matched to the device.
Other options are used with both 9-track and cartridge tapes (cartridge tapes are treated as if they were 9-track tapes.)
If the -e option is not selected, the program requests length and density information if this is not given on the command line or if it is not recorded on an input tape label. If the filesystem is too large to fit on one reel, volcopy prompts for additional reels. Labels of all reels are checked. Tapes may be mounted alternately on two or more drives. If volcopy is interrupted, it asks if the user wants to quit or wants to escape to the command interpreter. In the latter case, the user can perform other operations (such as labelit) and return to volcopy by exiting the command interpreter.
The fsname argument represents the mounted name (for example, ``root'', ``usr'', and so on) of the filesystem being copied.
The srcdevice or destdevice should be the disk partition or tape. For example, /dev/rdsk/* or /dev/rmt/*, where the value of ``*'' is machine specific.
The volname is the physical volume name. Such label names contain up to six characters. volname may be ``-'' to use the existing volume name.
srcdevice and volname1 are the device and volume from which the copy of the filesystem is being extracted. destdevice and volname2 are the target device and volume.
fsname and volname are recorded in the superblock.