ASF GitHub Bot commented on CLOUDSTACK-9572:

rafaelweingartner commented on issue #1740: CLOUDSTACK-9572 Snapshot on primary 
storage not cleaned up after Stor…
URL: https://github.com/apache/cloudstack/pull/1740#issuecomment-412284787
   Ok, so what this means is that the author when creating the PR used the 
`snapshotSrv.deleteSnapshot` thinking that it would only remove the snapshot in 
the hypervisor (primary storage). However, that method destroys the snapshot in 
ACS, which means removing in the DB and then from both storage systems (primary 
and secondary).
   Having said that, what we need is to create a method to remove only 
snapshots from the primary storage only, right? Then, instead of using 
`snapshotSrv.deleteSnapshot`, we use this new method.  

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> Snapshot on primary storage not cleaned up after Storage migration
> ------------------------------------------------------------------
>                 Key: CLOUDSTACK-9572
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9572
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: Storage Controller
>    Affects Versions: 4.8.0
>         Environment: Xen Server
>            Reporter: subhash yedugundla
>            Priority: Major
>             Fix For: 4.8.1
> Issue Description
> ===============
> 1. Create an instance on the local storage on any host
> 2. Create a scheduled snapshot of the volume:
> 3. Wait until ACS created the snapshot. ACS is creating a snapshot on local 
> storage and is transferring this snapshot to secondary storage. But the 
> latest snapshot on local storage will stay there. This is as expected.
> 4. Migrate the instance to another XenServer host with ACS UI and Storage 
> Live Migration
> 5. The Snapshot on the old host on local storage will not be cleaned up and 
> is staying on local storage. So local storage will fill up with unneeded 
> snapshots.

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