[jira] [Commented] (CLOUDSTACK-5392) Multiple Secondary Store - There is no retry happening on snapshot failures when one of the secondary stores is not reachable.

["Min Chen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-5392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13851000#comment-13851000 ] 

Min Chen commented on CLOUDSTACK-5392:
--------------------------------------

The correct fix for this bug is to fix related bug CLOUDSTACK-5371, that is, to provide maintenance mode for a secondary store which has connection issue. Then the first attempt of createSnapshot may fail, then admin can put the problematic store in maintenance mode, then next time if createSnapshot is invoked, CloudStack orchestration will choose another store to take and backup snapshot, then everything will be fine. We don't need to overly optimize things to handle uncommon scenarios.

> Multiple Secondary Store - There is no retry happening on snapshot failures when one of the secondary stores is not reachable.
> ------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-5392
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-5392
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Management Server
>    Affects Versions: 4.3.0
>         Environment: Build from 4.3
>            Reporter: Sangeetha Hariharan
>            Assignee: Min Chen
>            Priority: Critical
>             Fix For: 4.3.0
>
>         Attachments: 1205logs.rar
>
>
> Multiple Secondary Store - There is no retry happening on snapshot failures when one of the secondary stores is not reachable.
> Steps to reproduce the problem:
> Set up:
> Advanced zone set up with 2 Xenserver hosts.
> 2 secondary NFS stores - ss1 and ss2.
> Bring down ss1.
> Deployed 3 VMs.
> Create snapshots for ROOT volume of these 3 VMs.
> out of the 3 snapshot request , 2 were sent to ss1 and 1 to ss2.
> The 2 createSnapshot commands that were sent to ss1 , failed during "org.apache.cloudstack.storage.command.CopyCommand". 
> But there was no retry done on ss2.
> Expected Behavior:
> On failure to back up on 1 secondary store , we should attempt on other secondary stores.



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