Hi everyone,
It would be great I one of you could help me solve one of these two problems.
1- I'm using a HP C1553A DDS-2 autoloader under Digital Unix 3.2D. As I
previously read it here, it is possible to control compression just
adding this definition to /sys/data/cam_data.c:
/* HP C1553A - RDAT drive */
{"HP C1553A", 14, DEV_TZRDAT, (ALL_DTYPE_SEQUENTIAL << DTYPE_SHFT) |
SZ_RDAT_CLASS,
(struct pt_info *)ccmn_null_sizes, SZ_NO_BLK, (DEC_MAX_REC - 1),
&tlz06_dens, NO_MODE_TAB, SZ_NO_FLAGS,
NO_OPT_CMDS, SZ_READY_DEF, SZ_NO_QUE, DD_REQSNS_VAL | DD_INQ_VAL,
43, 64
},
Actually:
- the loader seems to be recognized (mt returns TZRDAT, not TZxx)
- rmt0l doesn't turn compression off
- rmt0h causes an IO write error
PS: underside switches are configured for compression enabled with host
control (when I try "compression disabled with host control", rmt0l
keeps compression off and rmt0h still causes an IO write error)
2- My second problem is more general: as the head becomes dirty in the
middle of a dump, it happens that the dump aborts
with a write error. It that case, the DAT tape seems to be definitely
unusable: loading such a tape leads to one or two retensions and an
error, as if some important mark had been erased at the beginning of it.
Moreover, I have a similar problem with 120m tapes I've formerly used in
an old DAT drive: in the old drive, they were recognized as DDS 60m
tapes. In the 1553A, I can't get them recognized back as DDS-2 120m
ones.
Any idea to recover those tapes?
--
o--------------------------------------------------------------------------o
| (-: Don't anthropomorphize computers. They don't like it. :-) |
|--------------------------------------------------------------------------|
| Renaud KERIVEN /\ CERMICS - Ecole Nationale |
| email: keriven_at_cermics.enpc.fr /__\ des Ponts et Chaussees |
| tel : 33 1 49.14.36.64 /\ /\ La Courtine |
| fax : 33 1 49.14.35.86 /__\/__\ F-93167 Noisy-le-Grand (FRANCE) |
| www : http://cermics.enpc.fr/~keriven/home.html |
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Received on Mon Mar 25 1996 - 09:35:00 NZST