recreate /dev/sg/* on solaris 10 without reboot

Created: 03 Oct 2012 | Updated: 13 Nov 2012

cornell

Hi,

We have added 6 new tape drives to our Solaris 10 Media servers. After running "devfsadm -C -c tape" I can see the new drives in the OS. That is, the /dev/rmt/* paths have been created & I can issue mt commands to query the drives.

I just need to get NetBackup to see the drives without rebooting.

Can I run the sg.build & sg.install scripts without rebooting?

I assume that I can considering the OS sees the drives?

My problem is that I am only allowed to reboot these servers twice a year.

I have read your excellent TECH31047 but it specifies a reboot.

Thanks.

Quick Look Solution

Yes, you can run sg.build and

Yes, you can run sg.build and sg.install without need for reboot.

These steps have always worked for me:

See http://www.symantec.com/docs/TECH10725 for examples how to determine number of targets (to be used with -mt) and number of luns (-ml).

Next, do the following:

# cd /usr/openv/volmgr/bin/driver
# /usr/openv/volmgr/bin/sg.build all -mt <15> -ml <1>

Install the new sg driver configuration:

# /usr/bin/rm -f /kernel/drv/sg.conf
# /usr/openv/volmgr/bin/driver/sg.install

Check/verify config:

# /usr/openv/volmgr/bin/sgscan

(I am aware that Martin's method is different, but as I've said - this has always worked for me.)

Filed Under

Tags:

Backup and Recovery, NetBackup - 7.1.x and Earlier, NetBackup, Solaris, Managing Backup Devices, Tip/How to, Upgrade

Comments

Marianne van den Berg

Trusted Advisor

Accredited

Certified

Oct

2012

SOLUTION

Yes, you can run sg.build and

Yes, you can run sg.build and sg.install without need for reboot.

These steps have always worked for me:

See http://www.symantec.com/docs/TECH10725 for examples how to determine number of targets (to be used with -mt) and number of luns (-ml).

Next, do the following:

# cd /usr/openv/volmgr/bin/driver
# /usr/openv/volmgr/bin/sg.build all -mt <15> -ml <1>

Install the new sg driver configuration:

# /usr/bin/rm -f /kernel/drv/sg.conf
# /usr/openv/volmgr/bin/driver/sg.install

Check/verify config:

# /usr/openv/volmgr/bin/sgscan

(I am aware that Martin's method is different, but as I've said - this has always worked for me.)

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

Yasuhisa Ishikawa

Partner

Accredited

Certified

Oct

2012

Run can run sg.build and

Run can run sg.build and sg.install without reboot. No problem.

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

cornell

Oct

2012

Great. Many thanks for your

Great. Many thanks for your replies. :-)

mph999

Symantec Employee

Oct

2012

Run like Marianne shows, but

Run like Marianne shows, but only use sg.build all

This is my way ...

cd /usr/openv/volmgr/bin/driver

../sg.build all

modunload -i $(echo $(modinfo |grep "sg (SCSA" |awk '{print $1}'))

mv /kernel/drv/sg.conf /kernel/drv/sg.conf.old

/usr/openv/volmgr/bin/driver/sg.install

Martin

Regards, Martin

Setting Logs in NetBackup:

http://www.symantec.com/docs/TECH75805