Tru64 v4.0f disk copy dd command

[TYP3R]

Hi Guys

We have a Alpha server with Tru64 v4.0f install, I need some commands on how to disk copy using the dd command, I know the procedure for it for v5 but the commands like hwmgr and show disk does not work on v4.

So i will need to commands similar to v5:
eg

hwmgr show scsi
show disk

dd if=/dev/disk/dsk#c of=/dev/disk/dsk#c bs=512k

Thanks for your help

William

[Rob Leadbeater]

Hi William,

On 4.0F, you'll probably need:

# scu show edt

to show you all SCSI devices.

Disk devices are usually /dev/rzN where N is based on the SCSI Bus/Target/LUN number.

Personally I'd use a pipelined vdump/vrestore to copy disks, rather than using dd.

Hope this helps,

Regards,

Rob

[Kapil Jha]

dd and hwmhr and scu edt are two different command.

in 4f you would have disk device as rzX

and dd command would be same except dsk you would have to use rz, be sure of device before run.

As suggested restore data would be better.

BR,
Kapil+

[TYP3R]

Thanks for the help Rob and Kapil

I've got what i need now and the dd copying command is working.

Is there a command to tell me which disk location the O/S is installed on?? at the moment i have one disk installed, which is easy, but if i have mulitple disk in a system, how will i find out which disk have the O/S installed??

[Rob Leadbeater · Accepted solution]

Hi Williams,

You can find the disk that you booted from with :

# consvar -g booted_dev

but this isn't necessarily where the OS is installed. For that probably best to look at the links under /etc/fdmns - assuming you're using AdvFS.

# ls -l /etc/fdmns/root_domain
# ls -l /etc/fdmns/usr_domain

Cheers,

Rob

[Kapil Jha]

#voldisk list

disks under rootdg would be the having OS.

BR,
Kapil+

[Kapil Jha]

and of course

#ls -l /etc/fdmns/root_domain

there are a couple of ways more...
#df -h /
check the block device and search it in volprint it would point to the root disks.

BR,
Kapil+

[Rob Leadbeater]

Hi,

@Kapil> #df -h /

The human readable option to df (-h) didn't get introduced until v5.1B...

Cheers,

Rob

[Kapil Jha]

eeeeeeeeee...
my bad Rob I have not logged in a Tru64 server for last 2 years :( forgetting everything.

Thanks for the help
BR,
Kapil+