[Ovirt-devel] RE: [Bug 481107] storage reconfiguration prevention behavior

[Itamar Heim]

From: Alan Pevec [mailto:apevec at gmail.com] 



On Mon, Jan 26, 2009 at 9:10 AM, Itamar Heim <iheim at redhat.com> wrote:

With all recent changes - is this only for menu based installs, or does
this
change the default behavior?
i.e., wouldn't this hamper upgrades, which are based on the assumption we
only upgrade the boot, and not overwrite the configuration.
I expect that if I put a newer version of usb/cd/boot from pxe with
autoinstall, that the configuration will be saved, and the node will auto
upgrade, right?


For the menu install, just don't choose partitioning and use local install
directly - that will just overwrite the node image on existing disk
partitions.

For autoinstall disk is currently always reformatted, to allow disk
reusage, I'll modify ovirt_init parameter like follows:

 ovirt_init=[usb|scsi[:serial#]|reuse|/dev/...]
 # local installation target disk
 # usb|scsi - select disk type, as reported by udev ID_BUS
 # serial# - select exact disk using serial number, as reported by
 #           udev ID_SERIAL
 # reuse - use existing partitions, fails if they don't
 # /dev/... - use specified disk device (for cases when HAL doesn't handle
it)
 # empty value - grab the first disk (/dev/?da)

[IH] this means we will need different configuration for a new install and
for an upgrade. So we need an option that will use existing partitions if
possible, but will create them if not.

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