[ovirt-users] Ovirt snapshot failing on one VM

[Itamar Heim]

On 04/23/2014 09:57 PM, R P Herrold wrote:
> On Wed, 23 Apr 2014, Steve Dainard wrote:
>
>> I have other VM's with the same amount of snapshots without this problem.
>> No conclusion jumping going on. More interested in what the best practice
>> is for VM's that accumulate snapshots over time.
>
> For some real world context, we seem to accumulate snapshots
> using our local approach, and are not that focused on, or
> attentive about removing them.  The 'highwater mark' of 39, on
> a machine that has been around since it was provisioned:
> 2010-01-05
>
> [root at xxx backups]# ./count-snapshots.sh | sort -n | tail -3
> 38 vm_64099
> 38 vm_98036
> 39 vm_06359
>
> Accumulating large numbers of snapshots seems more the
> function of pets, than ephemeral 'cattle'
>
> I wrote the first paragraph without looking up the 'owners' of
> the images. As I dereference the VM id's, all of the top ten
> in that list turn out to be mailservers, radius servers, name
> servers, and such, where the business unit owners chose not
> (or neglect) to 'winnow' their herd.  There are no ephemeral
> use units in the top ten
>
> -- Russ herrold
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please note there is a recommended limit of having no more than 500 
snapshots per block storage domain due to some LVM performance issues 
with high number of LVs. each disk/snapshot is an LV.
NFS doesn't have this limitation.