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Empty snapshot id and name in qcow2 image

From: Dmitry Antipov
Subject: Empty snapshot id and name in qcow2 image
Date: Wed, 1 Apr 2020 14:13:48 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0

I have a (presumably corrupted) image with empty snapshot id and invalid 

# qemu-img info bad.qcow2
image: bad.qcow2
file format: qcow2
virtual size: 64 GiB (68719476736 bytes)
disk size: 3.84 GiB
cluster_size: 65536
Snapshot list:
ID        TAG                     VM SIZE                DATE       VM CLOCK
                                  672 MiB 1971-01-24 11:40:32   00:00:00.000
1         CLONE                       0 B 2020-03-30 15:10:19   00:00:00.000
Format specific information:
    compat: 1.1
    lazy refcounts: false
    refcount bits: 16
    corrupt: false

Is it possible to remove unnamed (672 MiB) snapshot from this image?


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