Very Computer

The DAT-Drive I'm using (SONY SDT-7000) is recognized when using
Solaris 2.5.1 DU11.

My problem is that I've to restore files from the DAT after booting
from cdrom and not from harddisk.
In this case the SDT-7000 isn't recognized as DAT because it's not
found in the CDROMs st.conf .

I can't change this st.conf because it's on CDROM and thus not writable.

Is there any way to get this SDT-7000 to work ???

I tried the following:
1) Boot from cdrom
2) modunload -i <st modulenr>
3) cp /kernel/drv/st* /tmp
4) vi /tmp/st.conf (add lines for SDT-7000)
5) cd /tmp; modload ./st

It seems as if the st module was loaded from /tmp but the
/tmp/st.conf was not read.

Any help will be gratefully appreciated!

Thanks
Stefan

I wanted to ask a similar question (s/SDT-7000/DLT7000) recently,
but then I tried it before posting, and found out that although
the drive was not correctly recognized by the CD-boot the ufsrestore
worked. mtinfo showed type 0x12 (default), and the density codes were
wrong, too.

This was Solaris 2.6, under 7 there's a correct entry for the DLT 7000
in st.conf, and there the drive is correctly identified when booting
the CDROM.

hm, so, either simply try to restore even though the tape is not
recognized, or try to boot the most recent Solaris version and hope
that it has a correct st.conf entry.

I'm still interested why tape reading works from an unknown device,
though. It wasn't even slower. Could anybody fill me in ?

hth, mp.
--
                         Martin Paul | Systems Administrator

                and Parallel Systems | Tel: 01-3105608-84
Liechtensteinstrasse 22, A-1090 Wien | Fax: 01-3105608-88

Hi Paul,

I tried to read the tape without being recognized. I wrote a tar-archive
to it under Solaris 2.5.1 DU11 (booted from harddisk).
When trying to read it after the CDROM boot ( tar tvf /dev/rmt/0)
I received the error message:
st6:    fixed record length (512 byte blocks) I/O
WARNING:/pci..blabla
...
        Vendor: SONY
        Incorrect Length Indicator Set

The output from  "mtinfo /dev/rmt/0"  was:

mtinfo V2.1 26-Mar-97
Type                : 0x2d
Status              : 0
Error               : 0
Residual Count      : 0
FileNo curr. Pos.   : 0
BlokNo curr. Pos.   : 0
Flags               : 0x5
Opt. Blocking Factor: 126
Name               :Vendor 'SONY    ' Product 'SDT-7000        '
VID                :
Type               :0x2d
BlockSize          :512
Options            :0x2478
                  ST_BSF        (0x8)
                  ST_BSR        (0x10)
           ST_LONG_ERASE        (0x20)
        ST_AUTODEN_OVERRIDE     (0x40)
           ST_UNLOADABLE        (0x400)
              ST_DYNAMIC        (0x2000)
Max read Retries   :1000
Max. write Retries :1000
Densities          :0x00,0x00,0x00,0x00
Default density    :0 (0)
Speeds             :0,0,0,0

/kernel/drv/st.conf entry:

tape-config-list =
        "","Vendor 'SONY    ' Product 'SDT-7000        '","tape-data";
        tape-data = 1,0x2d,512,0x2478,4,0x00,0x00,0x00,0x00,0;

Density bytes used by device entry:

/dev/rmt/0   major=129 minor=130 density=0 density byte=0x00
/dev/rmt/0l  major=129 minor=130 density=0 density byte=0x00
/dev/rmt/0m  major=129 minor=138 density=1 density byte=0x00
/dev/rmt/0h  major=129 minor=146 density=2 density byte=0x00
/dev/rmt/0c  major=129 minor=154 density=3 density byte=0x00
/dev/rmt/0u  major=129 minor=154 density=3 density byte=0x00

To be honest I can't interpret the tape-data-line above and I
even couldn't find the SDT-7000 line in /kernel/drv/st.conf.

From /tmp/st.conf:
------------------
tape-config-list=
        "EXABYTE EXB-4200",   "Exabyte 4mm Helical Scan","DAT",
        "HP      HP35470A",   "HP 35470A 4mm DAT",  "HP70",
        "HP      HP35480A",   "HP 35480A 4mm DAT",  "DAT",
        "HP      C1533A",     "HP JetStore 6000 C1533","DAT",
        "SONY    SDT-5000",   "SONY 4mm DAT",               "DAT",
        "SONY    SDT-5200",   "SONY 4mm DAT",               "DAT",
        "SONY    SDT-7000",   "Sony DDS-2 4mm DAT", "DAT2",
        "TANDBERG 4100",      "Tandberg 4100 QIC",  "TANDBERG_4100_QIC",
        "TANDBERG 4200",      "Tandberg 4200 QIC",  "TANDBERG_4200_QIC",
        "WANGTEK 5525ES SCSI",        "Wangtek 525MB QIC",  "WT_5525ES_QIC";
        "ARCHIVE Python 28388", "Archive/Conner CTDX004 4mm DAT", "Conner2-DAT",
        "DEC     DLT2",         "DEC 15/30GB DLT","DLT",
        "HP      C1537A",       "HP DDS3 DAT",          "HPdds3",
        "TANDBERGMLR1",         "Tandberg MLR1 QIC",    "TANDBERG_MLR1",

DAT             =       1,0x34,0,0x0439,1,0x00,0;
DAT2            =       1,0x34,0,0x1439,1,0x00,0;
HP70            =       1,0x34,0,0x1679,1,0x0,0;

From /kernel/drv/st.conf:
-------------------------
tape-config-list=
        "EXABYTE EXB-4200",   "Exabyte 4mm Helical Scan","DAT",
        "HP      HP35470A",   "HP 35470A 4mm DAT",  "HP70",
        "HP      HP35480A",   "HP 35480A 4mm DAT",  "DAT",
        "HP      C1533A",     "HP JetStore 6000 C1533","DAT",
        "SONY    SDT-5000",   "SONY 4mm DAT",               "DAT",
        "SONY    SDT-5200",   "SONY 4mm DAT",               "DAT",
        "TANDBERG 4100",      "Tandberg 4100 QIC",  "TANDBERG_4100_QIC",
        "TANDBERG 4200",      "Tandberg 4200 QIC",  "TANDBERG_4200_QIC",
        "WANGTEK 5525ES SCSI",        "Wangtek 525MB QIC",  "WT_5525ES_QIC";

DAT             =       1,0x34,0,0x0439,1,0x00,0;
HP70            =       1,0x34,0,0x1679,1,0x0,0;

Stefan

=========================================================================================

Hi Casper,

THAT WAS IT !!!

Thanks for your tip with the "lofs". Interesting FSType - I've to
check the manpage for this :-)
After changing the (now writable) st.conf with the one from the DU11
the drive was recognized as a DAT and I can read my old backups
(from SDT-5000).

Procedure:
Boot from cdrom
modunload -i <st modulenr>
cd /kernel; find drv | cpio -pdm /tmp
vi /tmp/st.conf (add lines for SDT-7000) or get file from DU11
mount -F lofs /tmp/drv /kernel/drv
cd /kernel/drv
modload ./st

Thanks a lot
Stefan