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Drives are not visible from OS level

Created: 04 Oct 2012 | 4 comments

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 ...

Comments 4 CommentsJump to latest comment

Marianne's picture

You need to log a call with VTL vendor and your SAN administrator.

NBU is merely REPORTING the problem.

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

siri416's picture

from VTL side,they are showing as connected ..checking from san side . t

Thank you Marianne

Yasuhisa Ishikawa's picture

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.

Authorized Symantec Consultant(ASC) Data Protection in Tokyo, Japan

siri416's picture

ok yasuhisa, checking in that direction ..Thank you