Glenn Gagné <[EMAIL PROTECTED]> wrote: > I searched in many man pages, websites, FAQ, mailing-lists, etc. about > TAR option to specify tape drive > properties -[0-7][lmh] but nowhere I can find how to use this option.
The [0-7] selects the device numbers, and the letter selects the desired density: 'l' stands for low, 'm' stands for medium, and 'h' stands for high. This option is disabled by default. To enable it, define DEFAULT_ARCHIVE at the configuration time (e.g. ./configure DEFAULT_ARCHIVE=/dev/osst0l). Configure uses this variable to deduce the default archive prefix, and the way to select density. If DEFAULT_ARCHIVE ends in a digit and one of the letters 'l', 'm', 'h', then these two characters are removed and the remaining string is taken as the default device prefix. In this case, the option -[0-7][lmh] will select the device and density by appending the digit and the letter to the configured device prefix, e.g.: -0l will yield /dev/osst0l -4m will yield /dev/osst4m Otherwise, if DEFAULT_ARCHIVE ends in a digit only, this digit is removed to obtain the default device prefix. Then, -[0-7][lmh] works as follows: the first digit gives base device number; depending on the density letter, this number is increased by 0 for 'l' 8 for 'm' 16 for 'h' (this increments can be changed at configure time by defining LOW_DENSITY_NUM, MID_DENSITY_NUM, and HIGH_DENSITY_NUM, correspondingly). Then the obtained number is converted to ASCII and appended to the device prefix. Regards, Sergey
