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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
commitd0c85e36e4de67af628d54e9ab577cc3fad7796a (patch)
treef8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/files/1786
parent7f4364274750eb8cb39a3e7493132fca1c01232e (diff)
downloademulator-bug-study-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz
emulator-bug-study-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip
add deepseek and gemma results
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+
+Impossible to create an uncompressed QCOW2 disk
+Description of problem:
+An QCOW2 image is created compressed unconditionally. There is no way to disable compression, albeit the QCOW format specification allows this.
+
+```
+$ qemu-img --version
+qemu-img version 6.2.0 (Debian 1:6.2+dfsg-2ubuntu6.12)
+Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers
+$ qemu-img create -f qcow2 test.qcow2 1G
+Formatting 'test.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=1073741824 lazy_refcounts=off refcount_bits=16
+$
+```
+
+Same is applicable for 8-x qemu-img version (I built it for testing purposes)
+```
+$ ./build/qemu-img create -f qcow2 disk.qcow2 1G
+Formatting 'disk.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=1073741824 lazy_refcounts=off refcount_bits=16
+$ ./build/qemu-img --version
+qemu-img version 8.0.90 (v8.1.0-rc0-21-gd1181d2937)
+Copyright (c) 2003-2023 Fabrice Bellard and the QEMU Project developers
+$ 
+```
+Steps to reproduce:
+Create a QCOW2 disk with `qemu-img` of never versions.