Re: [Xen-devel] VHD BUG in xen4.0 when install windows2008

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Sun, May 09, 2010 at 01:02:42AM +0800, yingbin wang wrote:
>    I have try xenlinux 2.6.18.8. the problem also appear. os can not startup.
> 
>    Windows 2008 R2 Standard Edition 64(disk size: 20G, C:\ 15G, D:\ 5G) on
>    vhd file, the problem appear.
>    does anyone successfully install Windows 2008 R2 Standard Edition 64(disk
>    size: 20G, C:\ 15G, D:\ 5G) on vhd file??
>    env : (xen4.0, kernel2.6.31.13) or (xen4.0, kernel2.6.18.8)
> 

Looking at the log (below) it seems the 'tapdisk2' process segfaults (crashes).
Sounds like a bug in it..

-- Pasi

>    Cheers,
>    wyb
>    ÃÃ 2010ÃÃ5ÃÃ8ÃÃ ÃÃÃÃ8:46ÂÂyingbin wang <[1]yingbin.wangyb@xxxxxxxxx>ÃÅÂÃÂÂ
> 
>      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
>      vhd file, 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 <[2]Ian.Pratt@xxxxxxxxxxxxx>
> 
>        > 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      : [3]dev.sd.test.com
>        > cc_compile_date        : Mon Apr 26 10:17:37 CST 2010
>        > xend_config_format     : 4
>        >
> 
> References
> 
>    Visible links
>    1. mailto:yingbin.wangyb@xxxxxxxxx
>    2. mailto:Ian.Pratt@xxxxxxxxxxxxx
>    3. http://dev.sd.test.com/

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