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Full Discussion: need some help with backup
Operating Systems AIX need some help with backup Post 302712991 by bakunin on Wednesday 10th of October 2012 06:09:23 AM
Old 10-10-2012
Quote:
Originally Posted by fierfek
I would like to get both but datavg is the one i really need. I have tried using mksysb [...]
An "mksysb" is always an image of the rootvg only. It is used to create a backup set with all the configuration/customization information of a system in place so that it can be set up again fast in case of a machine failure or to clone a system onto another one. In fact mksysb-format backups include boot blocks so it is possible to directly boot a system from such an image and restore it from it in one pass.

There is the more general command "savevg", which creates a backup for any volume group. "mksysb" is in fact using "savevg", but putting a boot block and other information in front of this image. gts1999 already told you about "savevg".

The destination for either a mksysb- or a savevg-image is classically a tape drive, but can be any device or file. Just make sure you have enough room for it on this device/file.

I hope this helps.

bakunin
 

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MKBOOTDISK(8)						      System Manager's Manual						     MKBOOTDISK(8)

NAME
mkbootdisk - creates a stand-alone boot floppy for the running system SYNOPSIS
mkbootdisk [--version] [--noprompt] [--verbose] [--device devicefile] [--size size] [--kernelargs <args>] [--iso] kernel DESCRIPTION
mkbootdisk creates a boot floppy appropriate for the running system. The boot disk is entirely self-contained, and includes an initial ramdisk image which loads any necessary SCSI modules for the system. The created boot disk looks for the root filesystem on the device sug- gested by /etc/fstab. The only required argument is the kernel version to put onto the boot floppy. OPTIONS
--device devicefile The boot image is created on devicefile. If --device is not specified, /dev/fd0 is used. If devicefile does not exist mkinitrd cre- ates a 1.44Mb floppy image using devicefile as the filename. --noprompt Normally, mkbootdisk instructs the user to insert a floppy and waits for confirmation before continuing. If --noprompt is specified, no prompt is displayed. --verbose Instructs mkbootdisk to talk about what it's doing as it's doing it. Normally, there is no output from mkbootdisk. --iso Instructs mkbootdisk to make a bootable ISO image as devicefile. --version Displays the version of mkbootdisk and exits. --kernelargs args Adds args to the arguments appended on the kernel command line. If this is not specified mkbootdisk uses grubby to parse the argu- ments for the default kernel from grub.conf, if possible. --size size Uses ize (in kilobytes) as the size of the image to use for the boot disk. If this is not specified, mkbootdisk will assume a stan- dard 1.44Mb floppy device. SEE ALSO
grubby(8) mkinitrd(1) AUTHOR
Erik Troan <ewt@redhat.com> 4th Berkeley Distribution Tue Mar 31 1998 MKBOOTDISK(8)
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