On 31-Jan-2000 Dan Nelson wrote:
> In the last episode (Feb 01), Dmitry Samersoff said:
>> > In the last episode (Jan 31), Dmitry Samersoff said:
>> > > I have problem with HP SureStore 24x6 I can read(write) only from
>> > > one tape from catridge
>
> What does "chio status" return, and what does a "camcontrol devlist"
> print?
root@shade:~>chio status
slot 0: <ACCESS,FULL>
slot 1: <ACCESS,FULL>
slot 2: <ACCESS,FULL>
slot 3: <ACCESS>
slot 4: <ACCESS,FULL>
slot 5: <ACCESS,FULL>
drive 0: <ACCESS,FULL>
root@shade:~>camcontrol devlist
<IBM DDRS-39130W S92A> at scbus0 target 0 lun 0 (pass0,da0)
<IBM DDRS-39130W S71D> at scbus0 target 4 lun 0 (pass1,da1)
<HP C1557A U709> at scbus0 target 5 lun 0 (pass2,sa0)
<HP C1557A U709> at scbus0 target 5 lun 1 (pass3,ch0)
>
>> I find now (after lots of experiments) that sending raw SCSI command
>> helps me. Right command causing changer to load next tape looks like:
>> camcontrol stop -n sa -t 100 -v
>> camcontrol cmd -n sa -t 100 -v -c "1B 00 00 00 00 00"
>
> 1B is just an unload request, so your autoloader is probably in "dumb"
1B 00 00 - is unload request. Purpose of three extra bytes (00 xx 00)
is unknown for me but 00 xx 01 it loads tape number x.
00 00 00 load next tape.
(I find it in news, the same thing described in handbook's appendix for
previouse model of HP changer)
> or "gravity feed" mode, where an ejected tape causes the next tape to
> be loaded automatically. chio is for smart autoloaders with random
> access. A "mt rewoffl" should do the same thing as your camcontrol
mt rewoffl cause changer to rewind current tape, then unload it.
It doesn't load next tape.
--
Dmitry Samersoff, [EMAIL PROTECTED], ICQ:3161705
http://devnull.wplus.net
* There will come soft rains ...
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message
