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Diffstat (limited to 'gitlab/issues_text/target_missing/host_missing/accel_missing/1786')
| -rw-r--r-- | gitlab/issues_text/target_missing/host_missing/accel_missing/1786 | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gitlab/issues_text/target_missing/host_missing/accel_missing/1786 b/gitlab/issues_text/target_missing/host_missing/accel_missing/1786 new file mode 100644 index 000000000..a58ec5747 --- /dev/null +++ b/gitlab/issues_text/target_missing/host_missing/accel_missing/1786 @@ -0,0 +1,24 @@ +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. |