Tried zerombr, according to the doc, "yes" is deprecated.

Doesn't help.

zerombr
clearpart --all --initlabel
part /boot --asprimary --bytes-per-inode=4096 --fstype="ext3" --grow
--ondisk=dasda --size=88
part / --asprimary --bytes-per-inode=4096 --fstype="ext3" --grow
--ondisk=dasdb --size=1
part /var --asprimary --bytes-per-inode=4096 --fstype="ext3" --grow
--ondisk=dasdc --size=1
part swap --asprimary --bytes-per-inode=4096 --fstype="swap" --grow
--ondisk=dasdd --size=1
part pv.01 --asprimary --grow --ondisk=dasde --size=1
part pv.02 --asprimary --grow --ondisk=dasdf --size=1
part pv.03 --asprimary --grow --ondisk=dasdg --size=1

>From the kickstart documentation:

zerombr (optional) 

If zerombr is specified any invalid partition tables found on disks are
initialized. This destroys all of the contents of disks with invalid
partition tables. 
Note that in previous versions of Red Hat Enterprise Linux, this command
was specified as zerombr yes. This form is now deprecated; you should
now simply specify zerombr in your kickstart file instead.

------

The problem at the moment is that dasdb was partially formatted, so
there actually shouldn't be any partition table there (so why is it
asking?).  Admittedly this isn't a "normal" situation, but it could come
up where there was residual data in the minidisk space, or something
crashed.

And for Doug's point, by that logic, I can reduce my build time to zero
by simply cloning a ready system over every disk instead of formatting.
We configure instances on first-boot anyway.  But this doesn't work
unless you're using full volumes.

Those of us using minidisks don't have the option of preformatting, so
this becomes an apples-to-oranges comparison.


-----Original Message-----
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
Brad Hinson
Sent: Wednesday, June 10, 2009 1:28 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: [LINUX-390] To kick or to clone ... that is the question

Hall, Ken (GTS) wrote:
> Even if you "preformat" the DASD, it still has to be done, so it does
> take time.  And if you're using minidisks, you have to format it at
the
> point where the guest is created.
>
> On a related note, anyone know how to eliminate the prompt during
> kickstart?:
>
> Can't have a question in command line mode!
>
> Warning
>
> The partition table on device dasdb (0.0.0101) was unreadable. To
create
> new par
> titions it must be initialized, causing the loss of ALL DATA on this
> drive.
>
>
> This operation will override any previous installation choices about
> which drive
> s to ignore.
>
>
>
> Would you like to initialize this drive, erasing ALL DATA?
>
> yesno []
>
>
>
> I tried to format over a partially formatted minidisk, and got this.
> There doesn't seem to be an option to override and just go ahead and
> write.
>
> This is RHEL5.3.
>

The combination of kickstart options:

clearpart --all --initlabel
zerombr yes

will instruct the installer to go ahead and format the DASD without
prompting.

To your first point, I think Doug was pointing out that you don't have
to do this format every time.  If you have a DASD that was formatted for
Linux use in the past, you can just specify:

clearpart --all

and Anaconda will happily skip the dasdfmt.  This works great for DASD
used by Linux in the past.  For unknown or new DASD, it's best to use
the slow approach (dasdfmt during install), that way you know for sure.

-Brad



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