Snapshot Image occupies lot of memory, when compared to Instance Memory

asked 2016-11-29 09:15:52 -0500

Premnath gravatar image

updated 2016-11-29 09:22:22 -0500

Have a openstack instance with the size given below

Filesystem Size Used Avail Use% Mounted on

/dev/vda1 99G 7.7G 86G 9% /

tmpfs 3.9G 76K 3.9G 1% /dev/shm

/dev/vdb 400G 32K 400G 1% /mnt

but while taking snapshot of the above mentioned instance occupies lot of memory

Image Name Type Status Public Protected Format Size

XXXXX Snapshot Killed No No QCOW2 77.4 GB

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-Whether it is live snapshot or cold snapshot (/VM is running or not at time of image-create?)? -What is source format of image?

volenbovsky gravatar imagevolenbovsky ( 2016-11-29 10:29:17 -0500 )edit

It is cold snapshot(VM is shutdown, when i create the snapshot). The source image is Centos (format : QCOW2 ). The size of the centos image os 900MB.

Premnath gravatar imagePremnath ( 2016-11-29 12:03:53 -0500 )edit