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can not see tape drives from HP UX 11.11

mrmo07
Regular Advisor

can not see tape drives from HP UX 11.11

HI,

we have remove msl 6060. replace with 8096

Old four drives showing as no_hw after replacement as it is disconnected. order is /dev/rmt/1m /dev/rmt/2m /dev/rmt/3m /dev/rmt/4m. from the new four drives we are getting additional two drives /dev/rmt/5m /dev/rmt/6m that is drive 1 and 2 of new msl. we have tested cabling, is ok. Zoning is ok . but no info about other two drives ?

help.

Regards,
Morshed.
17 REPLIES
Jorge Pons
Trusted Contributor

Re: can not see tape drives from HP UX 11.11

Hi

first, you can remove old device files with "rmsf -H hardware_path".
Second one, if cabling is ok, and zoning too, you can revise mapping in msl.


Regards, Jorge
mrmo07
Regular Advisor

Re: can not see tape drives from HP UX 11.11

Hi,

i don't want to remove old hardware path for roll back issue. NO NSR card for MSL 8096. no mapping.

Regards,
Mrmo07
Hakki Aydin Ucar
Honored Contributor

Re: can not see tape drives from HP UX 11.11

did you try "insf -e" to see new HW ?
Jorge Pons
Trusted Contributor

Re: can not see tape drives from HP UX 11.11

Ok

Sorry, I understand you delete original devices.
The connection is SCSI?
In this case, you can revise scsi address and where is plug (if there is internal devices in that channel)
also, like says Hakki, you must do "ioscan" and "insf"

Regards, Jorge
mrmo07
Regular Advisor

Re: can not see tape drives from HP UX 11.11

Hi,

i didn't try insf -e . because os not detecting the device. once it get the device without device file i i can try with insf -e.

Regrds,
mrmo07
Jorge Pons
Trusted Contributor

Re: can not see tape drives from HP UX 11.11

HI

When you plug a new device, there is 2 ways to see, first is booting system, the other one is with ioscan. Unless you do an ioscan, the new devices not appear in the system, after this, to create new device files, "insf" and to recreate all device files "insf -e"
Can you post a schema of connections?

Regards, Jorge
mrmo07
Regular Advisor

Re: can not see tape drives from HP UX 11.11

hi Jorge Pons ,

this is fiber connection.

i did ioscan.

REgards,
mrmo07


Hakki Aydin Ucar
Honored Contributor

Re: can not see tape drives from HP UX 11.11

>mrmo07: because os not detecting the device
How were you sure that OS did not recognize the device ?
Did you make ?
# ioscan -fnCtape

and you did not see the device ?
mrmo07
Regular Advisor

Re: can not see tape drives from HP UX 11.11

Hi,

from the #ioscan -fnC tape. we can see two drives. but can not see other two drives. ensuring connection is ok.

Regards,
Morshed.
Jorge Pons
Trusted Contributor

Re: can not see tape drives from HP UX 11.11

Hi

do you have any server in that san to check the problem is only in your server?

Regards, Jorge
Hakki Aydin Ucar
Honored Contributor

Re: can not see tape drives from HP UX 11.11

>mrmo07: from the #ioscan -fnC tape. we can see two drives. but can not see other two drives. ensuring connection is ok.

try
# insf -e
Larry Klasmier
Honored Contributor

Re: can not see tape drives from HP UX 11.11

Just to hopefully add clarification. ioscan will NOT display the devices correctly until the device files are created. insf -e MUST be run to create the device files. As mentioned previously this can also be done via a system reboot. Part of the reboot run insf automatically.
Torsten.
Acclaimed Contributor

Re: can not see tape drives from HP UX 11.11

>> ioscan will NOT display the devices correctly until the device files are created.

I respectfully disagree.

insf can only work for devices visible to the server, so an ioscan is required.



However, I would like to see an "ioscan -fn" of the system. Then I would
- remove the old device files, do an ioscan again
- check all connections again (switch zoning etc)
- check which of the 4 drives are currently visible (compare the serial#)
- check with LTT ( http://www.hp.com/support/tapetools )

Hope this helps!
Regards
Torsten.

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Larry Klasmier
Honored Contributor

Re: can not see tape drives from HP UX 11.11

I agree you will see hardware of some type with ioscan before you run insf -e, however, it will not necessarily be recognized as a tape drive until you have run insf -e. So ioscan -fnC tape would not necessarily show these devices.
mrmo07
Regular Advisor

Re: can not see tape drives from HP UX 11.11

Hi all,

- i can not reboot server.
- if i can see two drives why not other two?
- any issue with hpux 11.11 or MSL 8096
- as old device file exist, any issue with that?(cant remove old for roll back)
- any issue like , hp ux cant show more that
/dev/rmt/6m? i mean can hpux count 7m,8m etc

main concern is without anything only with #ioscan -fn i can see two (drive 1 and 2) but cant see drive 3 and 4. why?

help...........
shanmuhanandam
Regular Advisor

Re: can not see tape drives from HP UX 11.11

Hi,
have you checked the dmesg and syslog for more info?
if you could post those output it will be easy.

Thanks,
Shan.
Jorge Pons
Trusted Contributor

Re: can not see tape drives from HP UX 11.11

Hi

Can you post cabling?
Are the cables comprobed?
Could be a HW problem? you can change cables to test it

Regards, Jorge