Re: RBD Snapshot

[Jean-Charles Lopez <jelopez@xxxxxxxxxx>]

Hi

Have you try the rbd du command?

Info simply tells you about the size provisioned. 

Regards

JC

While moving. Excuse unintended typos.

On Apr 7, 2019, at 13:21, Spencer Babcock <spencer.babcock@xxxxxxxxxx> wrote:

Hello,

 

I currently have an issue regarding RBD snapshot.

 

The issue:

I can fill a VM’s disk with dd, perform an rbd snapshot, delete the dd file, and repeat until the pool is full. All while RBD info shows the virtual size of the disk specified at creation. The commands I am aware of do not accurately reflect the volume’s total storage consumption.

 

How can I get a better picture of a volume’s storage footprint? “#rados df” ,  “#rbd diff pool/image@snap | awk '{ SUM += $2 } END { print SUM/1024/1024 " MB" }'”, “#rbd snap ls”, and “rbd export/qemu-img info” aren’t functional enough to show the storage consumed by differentials for an image.

 

Thanks!

	Spencer Babcock
	,  -
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