Hello.

Do you still remember this old bug from late-2012?  Do you still have any issues
outlined there?  I weren't able to reproduce it meantime, and both qemu and
seabios undergone several releases.

Can we close this bugreport now maybe? :)

Thanks,

/mjt

31.12.2012 01:03, Michael Tokarev wrote:
> 31.12.2012 00:43, Gianluigi Tiesi wrote:
>> On 12/29/12 15:57, Michael Tokarev wrote:
> []
>>>> vm -m 1024 -snapshot -device ahci,id=ahci0,bus=pci.0,addr=0x5 -drive
>>>> file=/dev/sda,if=none,id=drive-sata0-0-0,format=raw,boot=on -device
>>>> ide-hd,bus=ahci0.0,drive=drive-sata0-0-0,id=sata0-0-0
>>>
>>> This is not scsi, this is ahci, FWIW.
>>
>> Yes true, but boot=on option was made for scsi, so why it makes work my ahci 
>> setup that instead would not work? I mean it should be unrelated but instead 
>> looks like related.
> 
> Well.  boot=on was made for general usage, it works (or worked) for
> any bootable device, including scsi and ahci and network and other
> stuff.  It was a quick hack to allow booting from devices not
> directly supported by seabios, and is not supported by upstream
> anymore.
> 
>>>> but if I run:
>>>> kvm -m 1024 -snapshot -device ahci,id=ahci0,bus=pci.0,addr=0x5 -drive
>>>> file=/dev/sda,if=none,id=drive-sata0-0-0,format=raw -device
>>>> ide-hd,bus=ahci0.0,drive=drive-sata0-0-0,id=sata0-0-0
>>>>
>>>> grub loads but it's unable to identify the filesystem
>>>
>>> Well.  Which version of seabios is that?  I'm asking because
>>> this does not boot at all with current seabios+qemu-kvm from
>>> wheezy: guest bios does not find any boot device.  If in your
>>> case guest bios finds the boot device and loads grub, it must
>>> be some other version of either qemu-kvm or seabios.
>>
>> I'm on sid, and the just updated seabios 1.7.1-1 exposes same behavior
>> qemu-kvm is 1.1.2+dfsg-3
> 
> Interesting.  Okay.  So I need some way to reproduce this.
> Can you please tell us what do you use as the guest?  What
> is it, how it was setup, etc?  Maybe it is enough to do a
> fresh install of some distribution to expose this issue?
> 
> []
>> Unfortunately bootindex options changes nothing
> 
> Ok.
> 
>> here grub2 without boot=on
>>
>> Booting from Hard Disk...
>> GRUB loading.
>> Welcome to GRUB!
>>
>> error: unknown filesystem.
>> Entering rescue mode...
>> grub rescue> ls
>> (hd0) (hd0,msdos4) (hd0,msdos3) (hd0,msdos2) (hd0,msdos1) (fd0)
>> grub rescue> ls (hd0,msdos4)
>> error: unknown filesystem.
> 
> Oh well.  It looks like grub is unable to _read_ the drive.
> 
> I need a way to reproduce this :)
> 
> I'll try doing some installing/booting here when time permits.
> Maybe you can provide some instructions or maybe a guest image
> to speed things up... ;)
> 
>> while it works fine with boot=on
> 
> Ok.  So it appears to be some grub+seabios issue with the
> correct/modern way of booting things, while old/legacy boot
> option works fine.
> 
> Thank you!
> 
> /mjt
> 


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