Re: Restoring from mksysb

From: Joe MacDonald (joe_macdonald25_at_yahoo.com)
Date: 10/21/03 

Date: 20 Oct 2003 15:38:04 -0700

"Ulrich--nO--(dot)-sPAM--Link" <"Ulrich--nO--(dot)-sPAM--Link"@Epost.de> wrote in message news:<bn0k5q$h03$03$1@news.t-online.com>...
> Joe MacDonald wrote:
> > I have an RS6000 F50-7025 that currently has a 4GB SCSI boot disk
> > (rootvg). I'm going to replace it with a 9GB disk. I plan to restore
> > from an mksysb tape. I've never done this before. How difficult is
> > the restoration process from mksysb? Is there anything I should know
> > before diving in? I'm making the tape with the command:
> >
> > mkszfile -f'' && mksysb '/dev/rmt0.1'
>
> you can get the same with a single command:
> "mksysb -i /dev/rmt0"
>
> man mksysb
>
> > What's the best procedure for booting off this tape? By using
> > bootlist(1)?
>
> service mode bootlist should contain rmt before hdisk0
>
"service mode bootlist" - as in executing the bootlist command in AIX?

Is it true that I can hit "1" when the RS/6000 text is displayed on
the terminal to change the boot sequence? Ideally I could just boot
the system from tape just once, without modifying a set boot
parameter.

> >
> > What exactly happens when you boot off an mksysb tape? Does it just
> > ask you if you want to restore, and then begins the process? Should I
> > know the SCSI ID of the disk I'm installing to? Anything like that?
> > Are there any sort of gotchas I should be aware of?
>
> System boots from tape, you can then change the target disk from the
> default. The default is the disk at the location where the mksysb was made.

Well, I'll be swapping one disk in for another, so the original will
be ogne (don't have room for two scsi hard disks). So I guess the
location will remain the same.

> Tip: if your tape is capable of hardware compression (as almost every
> modern tape drive) disable the software packing with "-p" switch of the
> mksysb command.

Not sure if it does or not. This is an older system, RS6000 F50-7025.
 I believe the tape drive thats in this box is the original one
shipped with the system several years ago.

> Simply run mksysb and boot from the tape. You'll be surprised how simple
> this can be.

I'm sure it is. Just don't want to screw anything up :)
>
> ---
> Uli

Thanks,
Joe.

Relevant Pages

  • Re: mksysb recovery problems
    ... Dave, ... booting from tape. ... Subject: mksysb recovery problems ... We are now attempting to boot into the SMS menu and change ...
    (AIX-L)
  • Re: copy mksysb to tape
    ... Use Storix instead of mksysb. ... then later copy them to a remote tape drive. ... to tape and from tape to disk, ...
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  • Re: mksysb recovery problems
    ... > which is on the mksysb ... > Dave Zarnoch ... > booting from tape. ... > We are now attempting to boot into the SMS menu and change ...
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  • Re: mksysb recovery problems
    ... We are now attempting to boot into the SMS menu and change ... If the system has a *good* os on it, I assume you want to over-write that with a mksysb from another system? ... So, if you intend on booting from the mksysb, why are you changing the bootlist to "disk"? ... TAPE or not as already appropriately addressed by Martin in an earlier ...
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  • Fwd: Re: mksysb recovery problems MORE INFO
    ... To recover specific files from a backup made with mksysb, ... Said the tape was not in backup format ... We are now attempting to boot into the SMS menu and change ...
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