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Re: [Xen-devel] pvgrub2 is merged


From: Fabio Fantoni
Subject: Re: [Xen-devel] pvgrub2 is merged
Date: Mon, 09 Dec 2013 11:06:18 +0100
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.1.1

Il 07/12/2013 11:06, Vladimir 'φ-coder/phcoder' Serbinenko ha scritto:
On 06.12.2013 16:22, Fabio Fantoni wrote:
Il 06/12/2013 15:55, Vladimir 'φ-coder/phcoder' Serbinenko ha scritto:
On 06.12.2013 15:44, Fabio Fantoni wrote:
Il 06/12/2013 12:32, Vladimir 'φ-coder/phcoder' Serbinenko ha scritto:
On 06.12.2013 12:11, Fabio Fantoni wrote:
Il 03/12/2013 17:16, Fabio Fantoni ha scritto:
Il 03/12/2013 16:33, Vladimir 'φ-coder/phcoder' Serbinenko ha
scritto:
On 03.12.2013 15:00, Fabio Fantoni wrote:
Il 03/12/2013 12:29, Vladimir 'φ-coder/phcoder' Serbinenko ha
scritto:
On 03.12.2013 12:22, Fabio Fantoni wrote:
Il 03/12/2013 11:33, Vladimir 'φ-coder/phcoder' Serbinenko ha
scritto:
On 03.12.2013 11:31, Fabio Fantoni wrote:
If you need more tests/informations tell me and I'll post them.
I've already asked you for exact kernel that I can download (and
SHA512
to check it's the same one) and got only vague response

Thanks for reply.
The actual kernel used is from this package:
http://packages.debian.org/sid/linux-image-3.11-2-amd64

I already checked kernel's files integrity with md5 (using the
debian
package's md5sums file and is correct).
Same domU with pygrub with manual and minimal grub.cfg
configuration and
it boots correctly, but with pvgrub2 and grub.cfg created
automatically
(see attachment of previous mail) it doesn't boot.

With HEAD:
address@hidden:12:21:06:~/compile/bt/x86_64-xen$ ar x
~/downloads/linux-image-3.11-2-amd64_3.11.8-1_amd64.deb
address@hidden:12:23:29:~/compile/bt/x86_64-xen$ tar --xz -xf
data.tar.xz
address@hidden:12:28:36:~/compile/bt/x86_64-xen$ sha512sum
boot/vmlinuz-3.11-2-amd64
002bc39cfc0191614ec380a44993d20691e1dc8791a8c6f3a163777ef6fb733243d3da48760b2eedfc3ab9b8bd7b8fe2d473cdd3a91eb3d855eb4f3db9f7b6df




      boot/vmlinuz-3.11-2-amd64
address@hidden:12:23:38:~/compile/bt/x86_64-xen$
./grub-mkstandalone
--grub-mkimage=./grub-mkimage -o grub.xen -O x86_64-xen -d
grub-core/
boot/vmlinuz-3.11-2-amd64

                                  GNU GRUB  version 2.00

        Minimal BASH-like line editing is supported. For the first
word, TAB
        lists possible command completions. Anywhere else TAB lists
possible
        device or file completions.


grub> insmod xzio
grub> linux /boot/vmlinuz-3.11-2-amd64
grub> boot
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct

I've uploaded my grub.xen to
http://download-mirror.savannah.gnu.org/releases/grub/phcoder/grub.xen.xz




Thanks for any reply.

Thanks for your reply.
I tried with your build and gave me:

Caricamento Linux 3.11-2-amd64...
errore: not xen image.
Caricamento ramdisk iniziale...
errore: ? necessario caricare il kernel prima.

I also rebuilt pvgrub2 from clean directory, full logs of
configure,
make and xl create on attachment.
Also in this case domU destroys on kernel and initrd loading.
I not understand what are my errors and/or forgetfulness.

$ sha512sum /boot/vmlinuz-3.11-2-amd64
sha512sum /mnt/tmp/boot/vmlinuz-3.11-2-amd64
002bc39cfc0191614ec380a44993d20691e1dc8791a8c6f3a163777ef6fb733243d3da48760b2eedfc3ab9b8bd7b8fe2d473cdd3a91eb3d855eb4f3db9f7b6df


/mnt/tmp/boot/vmlinuz-3.11-2-amd64

Did you try with kernel embed in GRUB?
I tried with ./grub-mkstandalone --grub-mkimage=./grub-mkimage -o
pvgrub2.xen -O x86_64-xen -d grub-core/
/mnt/tmp/boot/vmlinuz-3.11-2-amd64
Probably I did something wrong or missed about this test.
On xl create it arrives to grub console, so I tried to set root and
include the grub.cfg of domU but gave nothing, only new console line.
Can you give me more details to do a complete and correct test?

Did you try root/linux/initrd/boot sequence manually?
I presume you mean to do insmod, set root and all other command
manually without using grub.cfg, could you confirm that or give me an
exact howto?

I tried manually sequence instead of do it with grub.cfg (I hope to
did
it correctly):

...
grub> insmod part_msdos
grub> insmod xzio
grub> insmod ext2
grub> insmod gzio
grub> set root=(xen/xvda,msdos1)
grub> linux /boot/vmlinuz-3.11-2-amd64
root=UUID=3ab55964-09d1-4853-be38-661b56a14 ro console=tty0 debug
grub> initrd /boot/initrd.img-3.11-2-amd64
grub> boot
xc: debug: hypercall buffer: total allocations:237 total releases:237
xc: debug: hypercall buffer: current allocations:0 maximum
allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:226 misses:4 toobig:7

unfortunately the result is the same :(

Hm, that is different from previous. Previously you spoke about "not a
xen image" message. I'd remove console=tty0 and also try without
initrd.
Without console and initrd:

...
grub> insmod part_msdos
grub> insmod xzio
grub> insmod ext2
grub> insmod gzio
grub> set root=(xen/xvda,msdos1)
grub> linux /boot/vmlinuz-3.11-2-amd64
root=UUID=3ab55964-09d1-4853-be38-661b5a476a14 ro debug
grub> boot
xc: debug: hypercall buffer: total allocations:247 total releases:247
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:236 misses:4 toobig:7

Which xen version is it? I tried only with 4.3

I always use xen-unstable (4.4) for pvgrub2 tests.
My actual build is on upstream commit
4b07b3cbf29f66da6090d52e75b5fdae592c6441
Could you check with xen-unstable? (now on freeze and near to first 4.4 rc)

Can't tell I get far on this one. I installed xen from git but when I
attempt to execute any command with xl it just hangs.

Did you try also -vvv?
If it show any debug messages please post them and add also xen-devel to cc in that case.
Can you also post details about your dom0?

Is there anything in your xl dmesg
Meanwhile I implemented vfb/vkbd in phcoder/vfb branch.

I tried vfb branch:
git log
commit acc3ea93f59727bdac47b1fef4eef24380161847
Author: Vladimir Serbinenko <address@hidden>
Date:   Sat Dec 7 12:46:59 2013 +0100

    Fix compilation error

I installed missed unifont package and compiled grub.

xl -vvv create -c does not show any grub line and crashes.
I attached xl -vvv create -c output and xl dmesg with calltrace inside.

If you need more informations and/or tests tell me and I'll post them.

Thanks for any reply.

Attachment: pvgrub2-xl-dmesg.txt
Description: Text document

Attachment: pvgrub2-xl-create.log
Description: Text document


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