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From "Rajani Karuturi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-8808) Successfully registered VHD template is downloaded again due to missing virtualsize property in template.properties
Date Sat, 26 Sep 2015 12:38:04 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-8808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14909248#comment-14909248
] 

Rajani Karuturi commented on CLOUDSTACK-8808:
---------------------------------------------

[~remibergsma]
from the code, I can see that vritualSize can be empty if VhdProcessor.getVirtualSize() throws
an IOException. That might mean vhd file is not generated properly and doesnt have the correct
header and footer offset. 
Did you face any issues with vms running on this template? for example usage calculation or
template sync issues?

I think we should not allow template registration if the vhd file processing is not successful.
This means there wont be any templates with missing virtualsize. I will make a PR for this.

Is it possible to share the template vhd file which didnt have virtualsize? It would help
me in testing. 

> Successfully registered VHD template is downloaded again due to missing virtualsize property
in template.properties
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-8808
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8808
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Secondary Storage
>    Affects Versions: 4.4.4, 4.6.0
>         Environment: Seen on NFS as sec storage
>            Reporter: Remi Bergsma
>            Assignee: Rajani Karuturi
>            Priority: Blocker
>
> We noticed all of our templates are downloaded again as soon as we restart SSVM, its
Cloud service or the management server it connects to.
> A scan done by the SSVM (listvmtmplt.sh) returns the template, but it is rejected later
(Post download installation was not completed) because (Format is invalid) due to missing
virtualSize property in template.properties.
> The initial registration did succeed however. I'd either want the registration to fail,
or it to succeed. Not first succeed (and spin VMs without a problem) then fail unexpectedly
later.
> This is the script processing the download:
> services/secondary-storage/server/src/org/apache/cloudstack/storage/template/DownloadManagerImpl.java
>  759     private List<String> listTemplates(String rootdir) {                 
       
>  760         List<String> result = new ArrayList<String>();             
             
>  761                                                                                
 
>  762         Script script = new Script(listTmpltScr, s_logger);                    
 
>  763         script.add("-r", rootdir);   
> For example this becomes:
> ==> /usr/local/cloud/systemvm/scripts/storage/secondary/listvmtmplt.sh -r /mnt/SecStorage/ee8633dd-5dbd-39a3-b3ea-801ca0a20da0
> In this log file, it processes the output:
> less /var/log/cloud/cloud.out
> 2015-09-04 08:39:54,622 WARN  [storage.template.DownloadManagerImpl] (agentRequest-Handler-1:null)
Post download installation was not completed for /mnt/SecStorage/ee8633dd-5dbd-39a3-b3ea-801ca0a20da0/template/tmpl/2/1607
> This error message is generated here:
> services/secondary-storage/server/src/org/apache/cloudstack/storage/template/DownloadManagerImpl.java
>  
> 780         List<String> publicTmplts = listTemplates(templateDir);           
      
>  781         for (String tmplt : publicTmplts) {                                    
 
>  782             String path = tmplt.substring(0, tmplt.lastIndexOf(File.separator));

>  783             TemplateLocation loc = new TemplateLocation(_storage, path);       
 
>  784             try {                                                              
 
>  785                 if (!loc.load()) {                                             
 
>  786                     s_logger.warn("Post download installation was not completed
for " + path);
>  787                     // loc.purge();                                            
 
>  788                     _storage.cleanup(path, templateDir);                       
 
>  789                     continue;                                                  
 
>  790                 }                                                              
 
>  791             } catch (IOException e) {                                          
 
>  792                 s_logger.warn("Unable to load template location " + path, e);  
 
>  793                 continue;                                                      
 
>  794             } 
> In the logs this message is also seen:
> MCCP-ADMIN-1|s-32436-VM CLOUDSTACK: 10:09:17,333  WARN TemplateLocation:196 - Format
is invalid 
> It is generated here:
> .//core/src/com/cloud/storage/template/TemplateLocation.java
> 192    public boolean addFormat(FormatInfo newInfo) {                               
> 193         deleteFormat(newInfo.format);                                           

> 194                                                                                 

> 195         if (!checkFormatValidity(newInfo)) {                                    

> 196             s_logger.warn("Format is invalid ");                                

> 197             return false;                                                       

> 198         }                                                                       

> 199                                                                                 

> 200         _props.setProperty("virtualsize", Long.toString(newInfo.virtualSize));  

> 201         _formats.add(newInfo);                                                  

> 202         return true;                                                            

> 203     }                          
> This returns false if checkFormatValidity is false.
> checkFormatValidity:
> 209     protected boolean checkFormatValidity(FormatInfo info) {                    

> 210         return (info.format != null && info.size > 0 && info.virtualSize
> 0 && info.filename != null);
> 211     } 
> This returns false if virtualSize is missing in template.properties. And indeed it is
missing.
> Examples:
> Working KVM
> root@s-44134-VM:/mnt/SecStorage/884db36b-cd00-3cf0-b812-831e9e50a4b3/template/tmpl/2/2932#
cat template.properties
> #
> #Thu Sep 03 11:41:44 UTC 2015
> filename=125672aa-62c0-30f1-ae1b-153486aa10eb.qcow2
> id=2932
> qcow2.size=1808203776
> public=true
> uniquename=2932-2-5c53bbe1-0c32-32a9-a82c-a5eefcb472e5
> qcow2.virtualsize=21474836480
> virtualsize=21474836480
> checksum=4c28fc94a7a9cbe858918a97f3b78294
> hvm=true
> description=Centos7-x86_64-Sbp_cis-KVM release 2015-35 build
> qcow2=true
> qcow2.filename=125672aa-62c0-30f1-ae1b-153486aa10eb.qcow2
> Working XenServer
> cat /mnt/SecStorage/ee8633dd-5dbd-39a3-b3ea-801ca0a20da0/template/tmpl/9/603/template.properties
> filename=16447323-ae24-4956-ac67-316eed8a2626.vhd
> vhd=true
> id=603
> vhd.filename=16447323-ae24-4956-ac67-316eed8a2626.vhd
> public=false
> uniquename=16447323-ae24-4956-ac67-316eed8a2626
> vhd.virtualsize=107374182400
> virtualsize=107374182400
> checksum=
> hvm=true
> description=570a3650f0-c982-334a-81b1-e8cf961363e4
> vhd.size=69028311552
> size=69028311552
> Not working XenServer
> root@s-32435-VM:/mnt/SecStorage/ee8633dd-5dbd-39a3-b3ea-801ca0a20da0/template/tmpl/2/1607#
cat template.properties 
> #
> #Fri Sep 04 09:05:24 UTC 2015
> filename=39794796-3f92-3168-9c4e-a64da5ee06e8.vhd
> uniquename=1607-2-0a13984d-6724-3b9f-8bd1-2798ef859167
> size=21475270656
> checksum=6eb85d82cb18032eba0cc8fe8a84a583
> description=Centos7-x86_64-Sbp_cis-XenServer release 2015-35 build
> hvm=true
> public=true
> id=1607
> Confirmed the virtualsize is missing. But why is this successfully registered in the
first place?
> Steps to reproduce:
> - register template
> - have it install successfully
> - check templates.properties file
>   sometimes virtualsize is missing
> - if it's there, remove it
> - restart cloud service on SSVM
> - the download will start again
>   in my case virtualsize is still missing
> - this becomes an endless loop.



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