GitHub user kiranchavala edited a comment on the discussion: Not able to attach
iso - "is not a valid QCOW2"
@damien-kamerman could you please let us know the output of the command
qemu-img info fiename.qcow2
```
root@ref-trl-9219-k-Mol8-kiran-chavala-kvm2 ~]# qemu-img info kvm.qcow2
image: kvm.qcow2
file format: qcow2
virtual size: 1 GiB (1073741824 bytes)
disk size: 196 KiB
cluster_size: 65536
Format specific information:
compat: 1.1
compression type: zlib
lazy refcounts: false
refcount bits: 16
corrupt: false
extended l2: false
```
GitHub link:
https://github.com/apache/cloudstack/discussions/11515#discussioncomment-14218394
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