Hey Kevin,

By design, when creating a snapshot, the new volume is created with 'sparse' allocation policy.

I suggest you to open a bug since this operation should not crash the VM.

Add this description and please add all relevant logs and any relevant information of your environment.

Regards,

Evelina

On Tue, Aug 13, 2019 at 4:10 PM Kevin Doyle <kevin.doyle@manchester.ac.uk> wrote:

Hi I have linux VM with 2 disks one for OS is sparse the other is for a Database and is Preallocated. When I take a snapshot of the VM both disks change to sparse policy but the disks in the snapshot are 1 sparse and 1 allocated. Before the snapshot the VM was running fine, now it crashes when data is written to the database. When I delete the snapshot the disks go back to 1 sparse and 1 allocated. Has anyone else seen this happen. Ovirt is 4.3.2.1-1.el7 and it is running on a hostedEngine

Many thanks
Kevin
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