10-04-2012 06:13 AM
Hi Team,
Drives of Disk library are going to down state frequently , they are virtual drives
we are unable to view the drives from scan command , where as cat /proc/scsi/scsi displays them ..
and from var/log/messages , we have
Oct 4 07:51:23 avrd[13073]: Unable to open TCEDL1869_LT1-DRIVE21(device 10, /dev/nst19) thru sg driver, No such device or address, DOWN'ing it
Oct 4 07:52:24 avrd[13073]: Unable to open TCEDL1869_LT1-DRIVE21 (device 19, /dev/nst8) thru sg driver, No such device or address, DOWN'ing it
please suggest how we have to proceed further
Thanks in advance ...
10-04-2012 06:17 AM
You need to log a call with VTL vendor and your SAN administrator.
NBU is merely REPORTING the problem.
10-04-2012 06:27 AM
from VTL side,they are showing as connected ..checking from san side . t
Thank you Marianne
10-04-2012 06:31 AM
adding to Marianne, ask OS admin to help you. sg device files under /dev does not exist or does not point appropriate hardware. there may be something wrong with sg driver.
10-04-2012 07:12 AM
ok yasuhisa, checking in that direction ..Thank you