[Crash-utility] patch to read vmware vmss file

[Dyno (Hongjun) Fu]

> On Feb 4, 2015, at 2:09 PM, Dave Anderson <anderson at redhat.com> wrote:
> 
> 
> 
> ----- Original Message -----
>> Dave,
>> 
>>  thanks for the review and here is the new patch. changes from the last
>>  version.
>> 
>> * add GPL license header
>> * remove stdbool.h
>> * complete function declaration
>> * add header file dependency in Makefile.
>> * fit VMWARE_VMSS to flag.
> 
> OK thanks.  
> 
> So far I have made a few very minor additions.  First, in main():
> 
> (1) The is_vmware_vmss() check should be preceded by the same "too many
>     dumpfiles" check that all of other dumpfile types do.
> (2) I added write_vmware_vmss to the writemem_function_name() function
>     (since it does exist and you make the assignment).
> 
> And in the is_vmware_vmss() function:
> 
> (1) The error message for the fopen() failure cannot happen because
>     a read-only check is done for all command line files in main() before
>     checking what they are.  But nonetheless, I left the error message
>     in place, encompassed by CRASHDEBUG(1).
> (2) The call to is_vmware_vmss() should not unconditionally print error
>     messages if the dumpfile is not a vmss file; the purpose of the function
>     is simply to confirm or deny whether it's a vmss file.  So, similar to
>     other dumpfile types, I encompassed the hdr.id validation error message
>     with CRASHDEBUG(1).
> 
>> addition to the source file change,
>> * vmss file samples.
>>  for vSphere ESX, memory dump is part of the vmss file;
>>  for VMware Workstation, memory dump stores in a companion vmem file.
>> 
>>   https://urldefense.proofpoint.com/v2/url?u=https-3A__www.dropbox.com_sh_fe8cdwxg1mw97or_AADSDfKDc8dHgh2AIBrMJE1za-3Fdl-3D0&d=AwICaQ&c=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEs&r=g2Vka_25x09RSowRkQw8pA&m=MjQn_IM6V_E1DFTKpCOAA41_gkhCWULZYVZXOUJ11Ns&s=6bVXW_DPSP4wbGMpQ84eLgexOMj3H6ZDpxuhskw8PNI&e= 
>>   - CentOS6.5-11bd56db.vmss - CentOS6.5/vSphere 5.5
>>     kernel-debuginfo-2.6.32-431.el6.x86_64.rpm  - symbol
>>     kernel-debuginfo-common-x86_64-2.6.32-431.el6.x86_64.rpm - source
>> 
>>   - Ubuntu1404_64bit-65993542.vmss - Ubuntu14.04/Workstation 11
>>     Ubuntu1404_64bit-65993542.vmem - companion memory dump
>>     linux-image-3.13.0-39-generic-dbgsym_3.13.0-39.66_amd64.ddeb - symbol
> 
> How do I extract the vmlinux-3.13.0-39-generic file?
> 
> Dave
> 


Thanks for the update.

You can extract the symbol with,

ar -x  linux-image-3.13.0-39-generic-dbgsym_3.13.0-39.66_amd64.ddeb
tar Jxvf data.tar.xz
ls ./usr/lib/debug/boot/vmlinux-3.13.0-39-generic

rgds,
Dyno