Backup/RAID of HD on Old UNIX Server Post: 302956567

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Operating Systems SCO Backup/RAID of HD on Old UNIX Server Post 302956567 by hicksd8 on Thursday 1st of October 2015 06:36:00 AM

10-01-2015

Moderator

Okay, I get the picture.

Do you have the install media for this O/S?

Does the machine have a floppy drive (that works)?
If so, you can make what is known as a "root & boot" set which will facilitate you getting the machine back on its feet if you have a full tape backup.

To create the "root & boot" floppies login as root and run:

Code:

# mkdev fd

which will give you a menu driven interface. Select the options to write out the emergency floppies.

To make a full tape backup capable of disaster recovery you should use cpio NOT tar. (The reason is that tar doesn't backup/restore the device nodes properly in /dev).

Typically:

Code:

 
 # cd /
 # find . -depth -print|cpio -ov -C10240 -K<tape size in K's> /dev/rct0

Yes, you can leave out the -C switch out but it is more efficient to write 10K blocks to tape. The -K should specify the capacity of each tape so that it calls for the next tape if needed. You should also use the -c switch if you want to write in 'portable' format such as knowing you are going to change platforms.

With a 'root & boot' set you can boot from floppy which contains all the commands needed for recovery, the required boot block copies, etc. So you can use the 'divvy' command to lay out a new hard drive and create the filesystems. The 'dd' command to write out boot blocks 0 and 1.
You can then mount your new empty hard disk root filesystem and restore the whole from tape. Also, restore any non-root filesystems.

That is broadly it. Feel free to ask further questions.

There is better SCO knowledge on this forum than mine so, down the line, you might ask moderators to move this thread to the SCO forum proper where it will be more likely to be seen by the right people.

Hope that helps.

Last edited by hicksd8; 10-01-2015 at 07:49 AM..

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LEARN ABOUT OPENSOLARIS

rpm2cpio

rpm2cpio(1)							   User Commands						       rpm2cpio(1)

NAME

       rpm2cpio - convert Red Hat Package (RPM) to cpio archive

SYNOPSIS

       rpm2cpio [file.rpm]

DESCRIPTION

       The  rpm2cpio  utility converts the .rpm file specified as its sole argument to a cpio archive on standard output. (See NOTES.) If no argu-
       ment is given, an rpm stream is read from standard input. In both cases, rpm2cpio will fail and print a usage message if the standard  out-
       put is a terminal. Therefore, the output is usually redirected to a file or piped through the cpio(1) utility.

EXAMPLES

       Example 1 Converting an rpm file

	 example% rpm2cpio Device3Dfx-1.1-2.src.rpm | cpio -itv
	 CPIO archive found!
	 -rw-r--r--  1 root  root  2635 Sep 13 16:39 1998, 3dfx.gif
	 -rw-r--r--  1 root  root 11339 Sep 27 16:03 1998, Dev3Dfx.tar.gz
	 -rw-r--r--  1 root  root  1387 Sep 27 16:04 1998, Device3Dfx-1.1-2.spec
	 31 blocks

       Example 2 Converting from standard input

	 example% rpm2cpio < Device3Dfx-1.1-2.src.rpm | cpio -itv
	 CPIO archive found!
	 -rw-r--r--  1 root  root  2635 Sep 13 16:39 1998, 3dfx.gif
	 -rw-r--r--  1 root  root 11339 Sep 27 16:03 1998, Dev3Dfx.tar.gz
	 -rw-r--r--  1 root  root  1387 Sep 27 16:04 1998, Device3Dfx-1.1-2.spec
	 31 blocks

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWrpm			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cpio(1), attributes(5)

NOTES

       rpm2cpio handles versions 3 and 4 RPMs.

SunOS 5.11							    20 Aug 2001 						       rpm2cpio(1)