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Full Discussion: Installation through mksysb image backup
Top Forums UNIX for Advanced & Expert Users Installation through mksysb image backup Post 302905549 by rbatte1 on Thursday 12th of June 2014 06:02:39 AM
Old 06-12-2014
Annoyingly, you can't write direct from the mksysb command like you can with tape and the write might take 3 hours by the way. There is time and space taken to manipulate the mksysb image file ready for the write (25 minutes maybe) but the write to real media is slow.

If your mksysb image file is about 2Gb (must fit a single DVD I think) then you will need 5Gb free in rootvg so it can build /mkcd/cd_fs and /mkcd/cd_images at an appropriate size (determined for you in the mkdvd script)


Before you create your mksysb image, make sure you save an structural image of any volume groups you want to rebuild too like this:-
Code:
rm -r /tmp/vgdata                          # Clear out any old definitions
mkszfile                                   # Create rootvg requirements
for vg in `lsvg|sort|grep -v rootvg`
do
   echo "^\\\./" > /etc/exclude.$vg        # Exclude all files, i.e. take just the structure
   savevg -ef /disaster/$vg.structure $vg
done

# Now run mksysb as you normally would to a file
# Then run mkdvd to write to media

If the directory /disaster is in the rootvg then these will be available on the recovery. You can use:-
Code:
restvg -qf /disaster/vg-name.structure hdisk2 hdisk3 hdisk4....

This will build your replacement volume groups to match the sizes you had at the time. It will restore (and mount) filesystems and raw logical volumes and then you can recover your business data from whatever other backup solution you have.

It is less error prone and far quicker that having a scripted mkvg-mklv-crfs. On a recovery where we stopped issuing all the makes & creates and used restvg instead, we saved 4 hours just on the step to recreate the disk layout.



Robin
 

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LEARN ABOUT SUNOS

c1541

c1541(1)						      General Commands Manual							  c1541(1)

NAME

       c1541 - a stand alone disk image maintenance program

SYNOPSIS

       c1541 [options] [image]

DESCRIPTION

       c1541  is a stand alone program that can be used for D64, D71, D81, X64 and G64 disk image file maintenance.  It is part of the VICE emula-
       tor.

       c1541 can be used both in interactive and batch mode.  It will start in interactive mode if no images and no options are  specified  or	if
       one image is specified; when started in interactive mode, command line editing and command history are available.

       Each command line option for use in batch mode has an interactive mode counterpart, that is shown in parenthesis.

       -attach image (attach image)
	       attach image for use.  All consequent commands in interactive mode will refer to this image.

       -detach image (detach image)
	       detach image from c1541.

       -format image (format image 'name,id')
	      format the disk image image with the specified label.  image is created if it does not exist.

       -delete image files... (delete files...)
	      delete files from image

       -list image (list)
	      list directory of image.

       -validate image (validate)
	      validate mage.

       -copy image oldname1 [oldname2...] newname (copy oldname1 [oldname2...] newname)
	      concatenate oldname1, oldname2... into newname on image (can be used to copy files).

       -create image dump ['descr'] (create image dump ['descr']
	      build image from raw dump file dump (i.e. convert from D64 to X64 file).

       -tape image tapeimage [files...] (tape image tapeimage [files...])
	      transfer files from tapeimage to image (default is all files).

       -read image 1541name [fsname] (read 1541name [fsname])
	      extract 1541name from the disk image into fsname (1541name by default) from image.

       -extract image (extract).
	      extract all files from image.

       -write image fsname [1541name] (write fsname [1541name])
	      write fsname to image as 1541name (fsname by default).  (works with P00 files as well).

       -block [drive:] [track] [sector] [disp] (block [drive:] [track] [sector] [disp])
	      show disk blocks in hex format.

       -info image ['descr'] (info ['descr'])
	      show version information about image.

       When more than one command is specified in batch mode, all of them are executed in the same order they have on the command line.

       If you use - as a file name, it stands for stdin or stdout.

SEE ALSO

       VICE(1), petcat(1)

AUTHORS

       Teemu Rantanen <tvr@cs.hut.fi>
       Ettore Perazzoli <ettore@comm2000.it>
       Andreas Boose <boose@linux.rz.fh-hannover.de>
       Jouko Valta <jopi@stekt.oulu.fi>

       with improvements by

       Olaf Seibert <rhialto@mbfys.kun.nl>
       Gerhard Wesp <gwesp@cosy.sbg.ac.at>

VICE
								   January 1999 							  c1541(1)
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