Re: [gentoo-user] boot problems

["Stefan G. Weichinger" <lists@xunil.at>]

Am 04.05.2014 21:22, schrieb J. Roeleveld:
> On Sunday, May 04, 2014 09:03:08 PM Stefan G. Weichinger wrote:

>> People run KVM-hosts with storage on ZFS ... nice with the
>> snapshots etc ...
> 
> Does KVM support running snapshots? Eg. also storing the memory and
> registers? I have not found any indication that KVM supports that.
> 
> Without that, KVM is useless to me.

KVM != ZFS ... you could use ZFS with other hypervisors.

AFAI understand you can take snapshots using libvirt (which in turn
controls the underlying qemu-kvm etc).

> I thought the MBR info that's possible with GPT would make it
> possible with any BIOS? Provided the /boot partition is early enough
> on the disk.

I had no separate /boot ... just sda1 as "BIOS boot partition",
unformatted and with partition type ef02 (and sda2 as my gentoo-root).

>> I also wanted to partition the SSD according to the Erase Block
>> Size of 6144 kB by this way ... dunno if this is still needed or
>> has any real speed benefits.
> 
> Again, I would expect current tools should do that automagically?

Maybe.

>> Maybe I take another approach to migrate to UEFI/GPT in the next
>> days, now that I have my rsynced filesystems at hand (I got rid of
>> more LVs and stuff so it gets pretty slim now).
> 
> Less LVs is simpler. More is more flexible.

Exactly. But it was time to clean up a bit.

>>> booting works from BIOS/MBR.
>> 
>> ... if your BIOS isn't crappy ;-)
> 
> Try updating? :)

Never found an update for this box.

-> DMI: Hewlett-Packard HP Elite 7300 Series MT/2AB5, BIOS 7.12 10/12/2011

hints welcome ;-)


> Seriously, do you have the following:
> 
> *** # man gdisk artemis ~ # gdisk -l /dev/sda GPT fdisk (gdisk)
> version 0.8.8
> 
> Partition table scan: MBR: protective
> 
> ***
> 
> That last line of what I copied is the bit that should make it
> possible.
> 
> Also, the /boot partition needs to have the mbr-boot flag (or
> whatever it's called) enabled.

Thanks, but I had that as well ... I will skip that stuff and try going
the UEFI-way later this day, if my customers allow ...

Stefan