Hi!
Trying to kill the keyboard, [EMAIL PROTECTED] produced:
> I cant write more 120 mb more or less in a 2GB ditto cartridge
> These are the steps I follow:
> insmod ftape
> insmod zftape
> insmod ftape-internal
> mt -f /dev/nqft0 rewind
> mt -f /dev/nqft0 erase
> tar -cpPvz --exclude proc.txt -f /dev/nqft0 /
Don't use -z with tar! One bitflip on the tape *WILL* kill
your complete archive! Go for a small block-compressor
(sizes around 10 Kb) or per-file compression, so you don't
loose all your data to a bad spot on the tape.
> I have triyed this devices
> crw------- 1 root root 27, 4 Sep 28 20:53 /dev/nqft0
Non-rewinding Quarter inch Floppy Tape 0
> crw-rw---- 1 root disk 27, 36 Apr 17 21:53 /dev/nrawqft0
Non-rewinding Quarter inch Floppy Tape 0, RAW access
(i.e. without parsing the headers (e.g. for formatting and
header changing purposes), not for normal backup use)
> crw------- 1 root root 27, 20 Jul 7 23:30 /dev/nzqft0
Non-rewinding (Z)compressing Quarter inch Floppy Tape 0
(non-writable in ftape 4.x, block-compresion was a feature
of ftape 3.x which was removed because it made hard write
error recovery very hard to code and compression should be
userland anyway.)
> crw------- 1 root root 27, 0 Sep 28 20:53 /dev/qft0
rewinding Quarter inch Floppy Tape 0
(will rewind on close[1] and can thus not be used for tape
positioning, else similar to nqft0)
> crw-rw---- 1 root disk 27, 32 Apr 17 21:53 /dev/rawqft0
rewinding Quarter inch Floppy Tape 0, RAW access
(See nrawqft0)
> crw------- 1 root root 27, 16 Jul 7 23:30 /dev/zqft0
rewinding (Z)compressing Quarter inch Floppy Tape 0
(see nzqft0)
> tar (grandchild): Cannot open archive /dev/zqft0: Read only file system
> tar (grandchild): Cannot open archive /dev/nzqft0: Read only file system
Explained above. Also explained in TFM, which you might want
to R.
> What am I doing wrong? what are all this devices for?
Maybe your Data is just 120 MB compressed? Try
tar -cpPvz --exclude proc.txt -f - / | wc --bytes
-Wolfgang
[1] you must rewind the tape eventually before removing:
the headers must be updated (which is done on rewind),
else your new backups will never be found again on the tape!
