virtio: kvm-62, lilo cannot be installed into virtio device
Hello
I test virtio block device. I can boot from vda as root partition, but if I want to install lilo into boot sector, lilo give me this error:
Fatal: Linux experimental device 0x04x needs to be defined. Check 'man lilo.conf' under 'disk=' and 'max-partitions='
I boot it like this:
kvm -boot c -drive file=basic-virtio.qcow2,if=virtio,boot=on -m 512 -vnc :0 -net nic,model=virtio,vlan=0,macaddr=00:00:10:52:37:48 -net tap,vlan=0,ifname=tap0,script=no -daemonize -localtime
basic-virtio.qcow is with lilo in boot sector installed, because is image what I use before virtio testing. But with each boot I must manually add root=/dev/vda2 if I want to boot it.
Host: Gentoo, kernel with gentoo patchset 2.6.24-r3
Guest: Gentoo, kernel vanilla 2.6.25-rc3
KVM: 62
qemu: 0.9.1
Thank you for your job.
Signature · 15 lines
Tomas Rusnak, Korex Networks ____________________________ Korex s.r.o. Pernikarska 8 010 01 Zilina Slovak Republic email [email protected] web www.korex.sk ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
Quoted 5 lines · Tomas Rusnak
I test virtio block device. I can boot from vda as root partition, but if I want to install lilo into boot sector, lilo give me this error:
Fatal: Linux experimental device 0x04x needs to be defined. Check 'man lilo.conf' under 'disk=' and 'max-partitions='
lilo can't figure out what /dev/vda to the bios, does adding:
disk=/dev/vda
bios=0x80
help?
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Chris Wedgwood napsal(a):
Quoted 8 lines · Tomas Rusnak
Quoted 6 lines
I test virtio block device. I can boot from vda as root partition, but if I want to install lilo into boot sector, lilo give me this error:
Fatal: Linux experimental device 0x04x needs to be defined. Check 'man lilo.conf' under 'disk=' and 'max-partitions='
Quoted 6 lines
lilo can't figure out what
/dev/vdato the bios, does adding:disk=/dev/vda
bios=0x80help?
Thank you for your quick answer, but this doesn't help. After i run lilo, it give me the same error message.
Signature · 16 lines
Tomas Rusnak, Korex Networks ____________________________ Korex s.r.o. Pernikarska 8 010 01 Zilina Slovak Republic tel +421 41 562 5648 email [email protected] web www.korex.sk ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
Quoted 4 lines · Tomas Rusnak
Quoted 1 line
Quoted 1 line
Check 'man lilo.conf' under 'disk=' and 'max-partitions='
Thank you for your quick answer, but this doesn't help. After i run lilo, it give me the same error message.
did you try adding 'max-partitions=16' or similar?
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Chris Wedgwood napsal(a):
Quoted 9 lines · Tomas Rusnak
Quoted 5 lines
Quoted 2 lines
Quoted 2 lines
Check 'man lilo.conf' under 'disk=' and 'max-partitions='
Thank you for your quick answer, but this doesn't help. After i run lilo, it give me the same error message.
did you try adding 'max-partitions=16' or similar?
Oh yes, i forgot it :)
But max-partitions=16 give you "bad value". After this I try max-partitions=7 and run lilo with following result:
Warning: /proc/partitions references Experimental major device 254.
Warning: /proc/partitions references Experimental major device 254.
Warning: /proc/partitions references Experimental major device 254. Added Gentoo-25 *
3 warnings were issued.
Now I can boot it correctly. Thank you very much again.
Signature · 15 lines
Tomas Rusnak, Korex Networks ____________________________ Korex s.r.o. Pernikarska 8 010 01 Zilina Slovak Republic email [email protected] web www.korex.sk ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
Quoted 1 line · Tomas Rusnak
But max-partitions=16 give you "bad value".
I suggested 16 because that's what the called to alloc_disk in the virtio block driver is using. I'm not sure why lilo dislikes that value.
Quoted 1 line
Now I can boot it correctly. Thank you very much again.
It might be useful to put up a Wiki page now that you have it working for this.
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Chris Wedgwood napsal(a):
Quoted 12 lines · Tomas Rusnak
Quoted 2 lines
But max-partitions=16 give you "bad value".
I suggested 16 because that's what the called to
alloc_diskin the virtio block driver is using. I'm not sure why lilo dislikes that value.Quoted 1 line
Now I can boot it correctly. Thank you very much again.
It might be useful to put up a Wiki page now that you have it working for this.
It's no problem to publish it for others, but did you mean to update this page?
http://kvm.qumranet.com/kvmwiki/Virtio?highlight=%28virtio%29/edit
or make a new page?
I don't know how, because I never put something onto kvm wiki. Can you point me to "right way"? :)
Signature · 16 lines
Tomas Rusnak, Korex Networks ____________________________ Korex s.r.o. Pernikarska 8 010 01 Zilina Slovak Republic tel +421 41 562 5648 email [email protected] web www.korex.sk ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
Quoted 11 lines · Tomas Rusnak
Chris Wedgwood napsal(a):
Quoted 7 lines · Tomas Rusnak
Quoted 4 lines
Quoted 2 lines
Quoted 2 lines
Check 'man lilo.conf' under 'disk=' and 'max-partitions='
Thank you for your quick answer, but this doesn't help. After i run lilo, it give me the same error message.
did you try adding 'max-partitions=16' or similar?
Oh yes, i forgot it :)
Quoted 9 lines
But max-partitions=16 give you "bad value". After this I try max-partitions=7 and run lilo with following result:
Warning:
/proc/partitionsreferences Experimental major device 254.
Warning:/proc/partitionsreferences Experimental major device 254.
Warning:/proc/partitionsreferences Experimental major device 254. Added Gentoo-25 *
3 warnings were issued.
max-partitions=7 sounds a bit confining, why are we using such a low number?
LILO is one of several reasons why using dynamic major really isn't such a great idea. We don't have the 8:8 limitation anymore.
-hpa
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