Re: VHD BUG in xen4.0 when install windows2008

[yingbin wang <yingbin.wangyb@gmail.com>]

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thank you for your reply.

as you guest, dom0 kernel: pvops 2.6.31.13

I try what you say.
menu.lst:
title Xen 4.0 kernel 2.6.31.13
        root (hd0,0)
        kernel /xen.gz dom0_mem=4096M dom0_max_vcpus=1 dom0_vcpus_pin
        module /vmlinuz-2.6.31.13 ro root=LABEL=/ nomodeset
        module /initrd-2.6.31.13.img

but the problem also appear, os can't startup.
Windows 2008 R2 Standard Edition 64(disk size: 20G, C:\ 15G, D:\ 5G)
on vhdfile, the problem
appear.

when I install windows 2008, I meet another problem :
the dom0 hang up, I reboot the physical machine and found some info from
/var/log/message:
May  8 20:02:47 SS01 tapdisk2[21997]: Assertion
'list_empty(&vreq->next)' failed, line 1822, file tapdisk-vbd.c
May  8 20:02:47 SS01 kernel: tapdisk2[21997]: segfault at 0 ip
000000000040a24f sp 00007fff162b2d90 error 6 in tapdisk2[400000+39000]
May  8 20:02:47 SS01 kernel: blktap_device_fail_pending_requests:
252:2: failing pending write of 11 pages
May  8 20:02:47 SS01 kernel: end_request: I/O error, dev tapdevc,
sector 10485752
May  8 20:02:47 SS01 kernel: Buffer I/O error on device tapdevc,
logical block 1310719
May  8 20:02:47 SS01 kernel: lost page write due to I/O error on tapdevc
May  8 20:02:47 SS01 kernel: Buffer I/O error on device tapdevc,
logical block 1310720
May  8 20:02:47 SS01 kernel: lost page write due to I/O error on tapdevc
May  8 20:02:47 SS01 kernel: Buffer I/O error on device tapdevc,
logical block 1310721
May  8 20:02:47 SS01 kernel: lost page write due to I/O error on tapdevc

I don't know the relation between two problems.I hope it give you more info
to help me solve the problem.
I think it may be a bug of the pvops 2.6.31.13. I hope there is a way to
solve it. could you give some advise?
I will try xenlinux 2.6.18.8 and report the result.

Cheers,
wyb
2010/5/8 Ian Pratt <Ian.Pratt@eu.citrix.com>

> > Description of problem:
> > after install Windows 2008 R2 Standard Edition 64(disk size: 20G, C:\
> 15G,
> > D:\ 5G) on vhd file (as base image), os can not startup.
>
> Which dom0 kernel is this with? I'm guessing one of Jeremy's pvops trees?
>
> It might be worth reducing the number of dom0 VCPUs to 1 and repeating the
> experiment to see if that makes a difference.
>
> Thanks,
> Ian
>
>
> > I found data error in C:\Windows\System32 :
> > ?--------- ? ?    ?           ?            ? pnpts.dll
> > ?--------- ? ?    ?           ?            ? pnpui.dll
> > ?--------- ? ?    ?           ?            ? PnPUnattend.exe
> > ?--------- ? ?    ?           ?            ? PnPutil.exe
> >
> > How reproducible:
> > I tested 10 times, it appear 10 times that os can not startup.
> >
> > Steps to Reproduce:
> > 1. vhd-util create -n test.vhd -s 20480
> > 2. xm create test.hvm
> > 3. install Windows 2008 R2 Standard Edition 64 ( disk size: 20G, C:\ 15G,
> > D:\ 5G ) 4. can not startup 5. xm des test.vhd 6. tapdisk2 -n
> > vhd:/mnt/img/test.vhd 7. mount -o offset=105906176 -t ntfs
> > /dev/xen/blktap-2/tapdev0 /mnt/vhd 8. ll /mnt/vhd/Windows/System32 | grep
> > ?
> > ?--------- ? ?    ?           ?            ? pnpts.dll
> > ?--------- ? ?    ?           ?            ? pnpui.dll
> > ?--------- ? ?    ?           ?            ? PnPUnattend.exe
> > ?--------- ? ?    ?           ?            ? PnPutil.exe
> >
> > Additional info:
> > I install
> > Windows 2003 Standard Edition SP1 32(disk size: 50G, C:\50G) on vhd file,
> > the problem disappear.
> > Redhat 5.4 AS 64(disk size:60G, /: 50G, swap: 10G) on vhd file, the
> > problem disappear.
> > Windows 2008 R2 Standard Edition 64(disk size: 100G, C:\ 100G) on vhd
> > file, the problem disappear.
> > Windows 2008 R2 Standard Edition 64(disk size: 100G, C:\ 90G, D:\10G) on
> > vhd file, the problem disappear.
> > Windows 2008 R2 Standard Edition 64(disk size: 20G, C:\ 15G, D:\ 5G) on
> > raw file, the problem disappear.
> > Windows 2008 R2 Standard Edition 64(disk size: 20G, C:\ 15G, D:\ 5G) on
> > vhd file, the problem appear.
> > Windows 2008 R2 Standard Edition 64(disk size: 100G, C:\ 15G, D:\85G) on
> > vhd file, the problem appear.
> >
> > ps:
> > windows 2003 need 3G disk space.
> > redhat 5.4 need 4G disk space.
> > windows 2008 need 8G disk space.
> > the problem disappear means that os can startup and no data error.
> >
> > compile env and filesystem :
> >  Redhat AS 5.4
> >
> > xm info:
> > host                   : vm01
> > release                : 2.6.31.13
> > version                : #1 SMP Wed Apr 21 12:30:21 CST 2010
> > machine                : x86_64
> > nr_cpus                : 16
> > nr_nodes               : 1
> > cores_per_socket       : 4
> > threads_per_core       : 2
> > cpu_mhz                : 2400
> > hw_caps                :
> > bfebfbff:28100800:00000000:00001b40:009ce3bd:00000000:00000001:00000000
> > virt_caps              : hvm
> > total_memory           : 24539
> > free_memory            : 1668
> > node_to_cpu            : node0:0-15
> > node_to_memory         : node0:1668
> > node_to_dma32_mem      : node0:82
> > max_node_id            : 0
> > xen_major              : 4
> > xen_minor              : 0
> > xen_extra              : .0
> > xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
> > hvm-3.0-x86_32p hvm-3.0-x86_64
> > xen_scheduler          : credit
> > xen_pagesize           : 4096
> > platform_params        : virt_start=0xffff800000000000
> > xen_changeset          : unavailable
> > xen_commandline        : dom0_max_vcpus=2 dom0_vcpus_pin
> > cc_compiler            : gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)
> > cc_compile_by          : root
> > cc_compile_domain      : dev.sd.test.com
> > cc_compile_date        : Mon Apr 26 10:17:37 CST 2010
> > xend_config_format     : 4
> >
>

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