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missing device paths

 
whiz_kid911
Frequent Advisor

missing device paths

hello
OS 11.23
i have the first drive with just a SAN based device path where as the second drive is giving all device paths.

I tried doing rmsf and recreated device paths using ioscan and insf, still it did not create all the device paths. has anyone come across such issues?

rhino1:/# ioscan -funC tape
Class I H/W Path Driver S/W State H/W Type Description
========================================================================
tape 6 0/4/2/0.45.0.255.1.3.0 stape CLAIMED DEVICE HP Ultrium 3-SCSI
/dev/rmt/c9t3d0BEST /dev/rmt/c9t3d0BESTn
/dev/rmt/c9t3d0BESTb /dev/rmt/c9t3d0BESTnb
tape 7 0/4/2/0.45.0.255.1.3.1 stape CLAIMED DEVICE HP Ultrium 3-SCSI
/dev/rmt/7m /dev/rmt/c9t3d1BEST
/dev/rmt/7mb /dev/rmt/c9t3d1BESTb
/dev/rmt/7mn /dev/rmt/c9t3d1BESTn
/dev/rmt/7mnb /dev/rmt/c9t3d1BESTnb
6 REPLIES
Hasan Atasoy
Honored Contributor

Re: missing device paths

hi ;

try


rm /dev/rmt/*

insf -e -C tape


Hasan

Re: missing device paths

login to EVA command view (our SAN)

1) verify you have presented the vdisks to our host

select your EVA network
select host
select presentation
do you see the disks and the lun numbers assigned

if none shows up, then
2)create a vdisk
3) select presentation
4) select the host
5) it will auto assign a lun or you can select using Assing luns.

then login to our unix
do ioscan -f
insf -e

now check ioscan -fnkCdisk

they should show up as claimed.

johnsonpk
Honored Contributor

Re: missing device paths

Hi Syed ,


I doubt ,you have seen the Author's Post !!


The thread is related to tape not disk

Rgds
Johnson
Robert-Jan Goossens
Honored Contributor

Re: missing device paths

Hi,

Did someone create links (ln -s) from /dev/rmt/7* --> /dev/rmt/c9t3d1BEST* ?

Try this;

# rmsf -H 0/4/2/0.45.0.255.1.3.0
# rmsf -H 0/4/2/0.45.0.255.1.3.0

Check if all device files have been remove from /dev/rmt otherwise remove them by hand (rm).

# insf -eH 0/4/2/0.45.0.255.1.3.0
check output from "ioscan -fnCtape"
# insf -eH 0/4/2/0.45.0.255.1.3.0
check output from "ioscan -fnCtape" again.

Regards,
Robert-Jan
Asif Sharif
Honored Contributor

Re: missing device paths

You can perform this also.

# rmsf -H 0/4/2/0.45.0.255.1.3.0
# rmsf -H 0/4/2/0.45.0.255.1.3.1
# insf -e

Regards,
Asif Sharif
sujit kumar singh
Honored Contributor

Re: missing device paths

Hi

do an insf -e

/dev/rmt/c9t3d0BEST /dev/rmt/c9t3d0BESTn
/dev/rmt/c9t3d0BESTb /dev/rmt/c9t3d0BESTnb

These can be well used directly with commands as well as in scripts.

use these in assumed places like

/dev/rmt/c9t3d0BEST -- for /dev/rmt/*m
/dev/rmt/c9t3d0BESTn -- /dev/rmt/*mn
/dev/rmt/c9t3d0BESTb -- /dev/rmt/*mb

/dev/rmt/c9t3d0BESTnb -- /dev/rmt/*mnb


Regards
sujit