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Re: [Xen-devel] 答复: 答复: Help: a xen crash of 4.8.2 version/////答复: Is there a faster way to restore Virtual machine status in Xen?


  • To: "Chenjia (C)" <chenjia09@xxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>
  • From: Juergen Gross <jgross@xxxxxxxx>
  • Date: Thu, 5 Jul 2018 07:17:04 +0200
  • Autocrypt: addr=jgross@xxxxxxxx; prefer-encrypt=mutual; keydata= xsBNBFOMcBYBCACgGjqjoGvbEouQZw/ToiBg9W98AlM2QHV+iNHsEs7kxWhKMjrioyspZKOB ycWxw3ie3j9uvg9EOB3aN4xiTv4qbnGiTr3oJhkB1gsb6ToJQZ8uxGq2kaV2KL9650I1SJve dYm8Of8Zd621lSmoKOwlNClALZNew72NjJLEzTalU1OdT7/i1TXkH09XSSI8mEQ/ouNcMvIJ NwQpd369y9bfIhWUiVXEK7MlRgUG6MvIj6Y3Am/BBLUVbDa4+gmzDC9ezlZkTZG2t14zWPvx XP3FAp2pkW0xqG7/377qptDmrk42GlSKN4z76ELnLxussxc7I2hx18NUcbP8+uty4bMxABEB AAHNHkp1ZXJnZW4gR3Jvc3MgPGpncm9zc0BzdXNlLmRlPsLAeQQTAQIAIwUCU4xw6wIbAwcL CQgHAwIBBhUIAgkKCwQWAgMBAh4BAheAAAoJELDendYovxMvi4UH/Ri+OXlObzqMANruTd4N zmVBAZgx1VW6jLc8JZjQuJPSsd/a+bNr3BZeLV6lu4Pf1Yl2Log129EX1KWYiFFvPbIiq5M5 kOXTO8Eas4CaScCvAZ9jCMQCgK3pFqYgirwTgfwnPtxFxO/F3ZcS8jovza5khkSKL9JGq8Nk czDTruQ/oy0WUHdUr9uwEfiD9yPFOGqp4S6cISuzBMvaAiC5YGdUGXuPZKXLpnGSjkZswUzY d9BVSitRL5ldsQCg6GhDoEAeIhUC4SQnT9SOWkoDOSFRXZ+7+WIBGLiWMd+yKDdRG5RyP/8f 3tgGiB6cyuYfPDRGsELGjUaTUq3H2xZgIPfOwE0EU4xwFgEIAMsx+gDjgzAY4H1hPVXgoLK8 B93sTQFN9oC6tsb46VpxyLPfJ3T1A6Z6MVkLoCejKTJ3K9MUsBZhxIJ0hIyvzwI6aYJsnOew cCiCN7FeKJ/oA1RSUemPGUcIJwQuZlTOiY0OcQ5PFkV5YxMUX1F/aTYXROXgTmSaw0aC1Jpo w7Ss1mg4SIP/tR88/d1+HwkJDVW1RSxC1PWzGizwRv8eauImGdpNnseneO2BNWRXTJumAWDD pYxpGSsGHXuZXTPZqOOZpsHtInFyi5KRHSFyk2Xigzvh3b9WqhbgHHHE4PUVw0I5sIQt8hJq 5nH5dPqz4ITtCL9zjiJsExHuHKN3NZsAEQEAAcLAXwQYAQIACQUCU4xwFgIbDAAKCRCw3p3W KL8TL0P4B/9YWver5uD/y/m0KScK2f3Z3mXJhME23vGBbMNlfwbr+meDMrJZ950CuWWnQ+d+ Ahe0w1X7e3wuLVODzjcReQ/v7b4JD3wwHxe+88tgB9byc0NXzlPJWBaWV01yB2/uefVKryAf AHYEd0gCRhx7eESgNBe3+YqWAQawunMlycsqKa09dBDL1PFRosF708ic9346GLHRc6Vj5SRA UTHnQqLetIOXZm3a2eQ1gpQK9MmruO86Vo93p39bS1mqnLLspVrL4rhoyhsOyh0Hd28QCzpJ wKeHTd0MAWAirmewHXWPco8p1Wg+V+5xfZzuQY0f4tQxvOpXpt4gQ1817GQ5/Ed/wsDtBBgB CAAgFiEEhRJncuj2BJSl0Jf3sN6d1ii/Ey8FAlrd8NACGwIAgQkQsN6d1ii/Ey92IAQZFggA HRYhBFMtsHpB9jjzHji4HoBcYbtP2GO+BQJa3fDQAAoJEIBcYbtP2GO+TYsA/30H/0V6cr/W V+J/FCayg6uNtm3MJLo4rE+o4sdpjjsGAQCooqffpgA+luTT13YZNV62hAnCLKXH9n3+ZAgJ RtAyDWk1B/0SMDVs1wxufMkKC3Q/1D3BYIvBlrTVKdBYXPxngcRoqV2J77lscEvkLNUGsu/z W2pf7+P3mWWlrPMJdlbax00vevyBeqtqNKjHstHatgMZ2W0CFC4hJ3YEetuRBURYPiGzuJXU pAd7a7BdsqWC4o+GTm5tnGrCyD+4gfDSpkOT53S/GNO07YkPkm/8J4OBoFfgSaCnQ1izwgJQ jIpcG2fPCI2/hxf2oqXPYbKr1v4Z1wthmoyUgGN0LPTIm+B5vdY82wI5qe9uN6UOGyTH2B3p hRQUWqCwu2sqkI3LLbTdrnyDZaixT2T0f4tyF5Lfs+Ha8xVMhIyzNb1byDI5FKCb
  • Cc: zhaobingjian <zhaobingjian@xxxxxxxxxx>, "Shentao \(Terry\)" <shentao8@xxxxxxxxxx>, Yaoshaomin <yaoshaomin@xxxxxxxxxx>, "Zhuxiaolin \(A\)" <zhuxiaolin09@xxxxxxxxxx>, "wangxu \(R\)" <wangxu0@xxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, yuanjinfeng <yuanjinfeng@xxxxxxxxxx>
  • Delivery-date: Thu, 05 Jul 2018 05:17:24 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
  • Openpgp: preference=signencrypt

On 05/07/18 05:51, Chenjia (C) wrote:
> Dear Juergen:
>       Thank your for your help, Here are the message:
> - which kernel version?
> 1、The "xl info " information is:
> 
> host                   : linux
> release                : 4.4.103-92.56-default
> version                : #1 SMP Wed Dec 27 16:24:31 UTC 2017 (2fd2155)
> machine                : x86_64
> nr_cpus                : 24
> max_cpu_id             : 23
> nr_nodes               : 2
> cores_per_socket       : 6
> threads_per_core       : 2
> cpu_mhz                : 2394
> hw_caps                : 
> b7ebfbff:77fef3f7:2c100800:00000021:00000001:000037ab:00000000:00000100
> virt_caps              : hvm hvm_directio
> total_memory           : 261749
> free_memory            : 14127
> sharing_freed_memory   : 0
> sharing_used_memory    : 0
> outstanding_claims     : 0
> free_cpus              : 0
> xen_major              : 4
> xen_minor              : 8
> xen_extra              : .2
> xen_version            : 4.8.2
> 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          : 
> xen_commandline        : dom0_mem=174080M,max:174080M dom0_max_vcpus=24 
> hap_1gb=false hap_2mb=false altp2m=1 flask_enforcing=1 console=vga,com1 
> com1=115200 loglvl=all
> cc_compiler            : gcc (SUSE Linux) 4.8.5
> cc_compile_by          : root
> cc_compile_domain      : (none)
> cc_compile_date        : Thu Mar 29 17:42:36 CST 2018
> build_id               : c73cb12afb1a2c2cfc09eb5035d7576b1eb071e9
> xend_config_format     : 4
> 
> 2、the "uname -a " information is:
> Linux linux 4.4.103-92.56-default #1 SMP Wed Dec 27 16:24:31 UTC 2017 
> (2fd2155) x86_64 x86_64 x86_64 GNU/Linux
> 
> - is this in dom0 or in a domU (if domU: HVM or PV)?
>       In Dom0, our domU run windows7 OS. 
> 
> - from the messages in guess the system is hanging, not crashed?
>       the whole server is hanging and can not be connected or operate anyway.
> - what are the other vcpus of the domain doing (how to get this info
>   is depending on the dom0/domU question above)?
>       the whole server is hanging and can not be connected. 

Looking at xen_commandline you seem to have a serial console connected.

When the machine is hanging, please issue ctrl-A three times to switch
the console from dom0 to Xen.

Then type '0' (just the digit zero) to get the dom0 vcpu state (please
do that multiple times in order to see which vcpus are in loops).

Then send the log obtained via the serial line for further diagnosis. It
will help if you translate the obvious kernel addresses of the hex stack
dumps of the vcpus to symbol+offset using the kernel symbol table.


Juergen

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