topic Re: Remote Backup in Operating System - Tru64 Unix

Remote Backup

Sebastian_23 — Wed, 04 Aug 2004 05:47:55 GMT

Hi...

I have to make a backup and the machine hasnÂ´t got a tape drive. So I thought (like in SUN) to make a remote backup.

But it couldnÂ´t be possible. I got the following answer:
seb085:vdump 0uf seb087:/dev/nrmt0h /in
vdump: can't open dev <>; [2] No such file or directory

So It's supposed to make a backup via NFS?.

Thks in adva

Re: Remote Backup

Michael Schulte zur Sur — Wed, 04 Aug 2004 06:02:57 GMT

Hi,

if the tru64 machine has os 5.x then the tape devices are in /devices/(n)tape

greetings,

Michael

Re: Remote Backup

Ravi_8 — Wed, 04 Aug 2004 07:21:26 GMT

Hi,

you are right. Mount the file system to be backed up using NFS to Tru64 machine.
then use either tar,cpio,dd,or vdump to backup

Re: Remote Backup

Michael Schulte zur Sur — Wed, 04 Aug 2004 07:30:58 GMT

Can you post how you tried to do it?

thanks,

Michael

Re: Remote Backup

Ralf Puchner — Wed, 04 Aug 2004 08:21:27 GMT

why so complicated?

# rsh remotealpha '/sbin/vdump -0 -u -b 60 -f - /fileset' | dd of=/dev/nrmt0h bs=60k
# rsh dumphost 'dd if=/dev/nrmt0h bs=60k'|vrestore -x -v -f -

in v5.x you must use the devices michael suggest instead of /dev/nrmt0h

Re: Remote Backup

Sebastian_23 — Wed, 04 Aug 2004 09:13:38 GMT

Hi,

This is the command:
rsh seb087 '/sbin/vdump 0uf /dev/nrmt0h' /in

And as Ralf said I tried the "rsh" and it is working ok, I've just make a test and it's going ok.

I checked de status of my tape drive, just for the /dev/ntape/rmt0h and for the /dev/nrmt0h and te status is the same, is there any problem if I use the second one?

Thks Everybody

Re: Remote Backup

Michael Schulte zur Sur — Wed, 04 Aug 2004 09:25:59 GMT

Usually it is under 4.x
/dev/nrmt0h
under 5.x
/dev/ntape/nrmt0h

If the status is the same, it should not be a problem. Did you upgrade the os or use MAKEDEV to create the old style tape devices?

You are backing the sun on the alpha tape, right?

hth,

Michael

Re: Remote Backup

Sebastian_23 — Wed, 04 Aug 2004 09:44:19 GMT

Michel,

Just IÂ´ve installed a SMF Active & SLEE in this Alpha DS15.
The point is that this machine hasnt got a tape drive, so I have to make the backup into de PSMF, another machine.

My doubt was because I was told to use the /dev/nrmt0h not to rewind and I used it, and it worked ok. I was a little confused with the example about OS 5.X, but itÂ´s ok no problem with this.

Thks ag

Re: Remote Backup

Ralf Puchner — Wed, 04 Aug 2004 12:25:42 GMT

norewind device is necessary if you want to create more than one saveset per tape otherwise tape will be rewind after end of saveset.

Re: Remote Backup

Matt Palmer_2 — Thu, 05 Aug 2004 03:19:02 GMT

Hi,

could you not use 'rvdump', to save having to create NFS mounts,etc. this would allow you to use a tape device not on your local machine

Re: Remote Backup

Ralf Puchner — Thu, 05 Aug 2004 04:23:51 GMT

rvdump is not part of all Tru64 distributions and the rsh method works with every version.