DANGER!!! Problems with 10.04 installer (RAID devices *will* get corrupted)

[J]

On Tue, Apr 27, 2010 at 11:57, Alvin Thompson <alvin at thompsonlogic.com> wrote:
> On 04/26/2010 10:22 PM, J wrote:
>> Be warned, I have to do this in a virtualized environment as I don't
>> have enough physical hardware to recreate this.  My only multi-disk
>> system is my home fileserver and I don't really fancy tearing that
>> apart and rebuilding it...  so keep in mind that I'm doing this in VM
>> space... but given that this is software RAID that shouldn't matter as
>> the OS doesn't know it's a VM.
>
> Rats, it probably won't work in a VM because of the way a VM's virtual
> storage devices work. They discard everything that's not being used at
> that moment, otherwise you'd have to allocate the full size of the
> drive. Thus, you probably couldn't have any defunct file systems sitting
> around.

Also mentioned this in the bug comments, but FWIW, I don't use sparse
files in my VMs... each disk is a fully allocated disk before it's
ever used in a VM.. I've had too many issues with sparse files in the
past to mess with things that are not fully grown :-)

Cheers
Jeff