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Pavel Hrdina 3e1d2c93a3 storage: add support for QCOW2 cluster_size option 
The default value hard-coded in QEMU (64KiB) is not always the ideal.
Having a possibility to set the cluster_size by user may in specific
use-cases improve performance for QCOW2 images.

QEMU internally has some limits, the value has to be between 512B and
2048KiB and must by power of two, except when the image has Extended L2
Entries the minimal value has to be 16KiB.

Since qemu-img ensures the value is correct and the limit is not always
the same libvirt will not duplicate any of these checks as the error
message from qemu-img is good enough:

    Cluster size must be a power of two between 512 and 2048k

Resolves: https://gitlab.com/libvirt/libvirt/-/issues/154

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2021-05-21 14:00:43 +02:00
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fonts meson: add rule to build and install only web documentation 2020-08-03 09:27:06 +02:00
gitdm gitdm: add more individual contributors 2020-09-25 16:00:06 +02:00
html meson: add rule to build and install only web documentation 2020-08-03 09:27:06 +02:00
internals lib: Drop internal virXXXPtr typedefs 2021-04-13 17:00:38 +02:00
js meson: add rule to build and install only web documentation 2020-08-03 09:27:06 +02:00
kbase docs: kbase: Add a doc on merging disk image chains 2021-05-11 11:23:57 +02:00
logos docs: fix misc spelling errors reported by codespell 2020-10-05 10:28:37 +01:00
manpages virsh: Expose new win-dmp dump format 2021-05-20 16:24:06 +02:00
schemas storage: add support for QCOW2 cluster_size option 2021-05-21 14:00:43 +02:00
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advanced-tests.rst lib: Drop internal virXXXPtr typedefs 2021-04-13 17:00:38 +02:00
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api_extension.rst lib: Drop internal virXXXPtr typedefs 2021-04-13 17:00:38 +02:00
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coding-style.rst lib: Drop internal virXXXPtr typedefs 2021-04-13 17:00:38 +02:00
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drvesx.html.in docs: fix misc spelling errors reported by codespell 2020-10-05 10:28:37 +01:00
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formatnetwork.html.in Fix format network dns doc 2021-01-26 14:29:48 +01:00
formatnetworkport.html.in docs: formatnetworkport: Fix typos 2021-04-01 13:32:25 +02:00
formatnode.html.in nodedev: support auto-start property for mdevs 2021-05-20 11:10:08 +02:00
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formatsnapshot.html.in conf: snapshot: Add support for <metadata_cache> 2021-01-08 15:27:00 +01:00
formatstorage.html.in storage: add support for QCOW2 cluster_size option 2021-05-21 14:00:43 +02:00
formatstoragecaps.html.in docs: Fix link for virConnectGetStoragePoolCapabilities 2020-12-02 16:15:43 +01:00
formatstorageencryption.html.in docs: support qcow2 format in luks encryption volume 2021-01-05 13:54:11 +01:00
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hacking.rst Revert "docs: Drop glib-adoption.rst" 2020-10-02 14:10:40 +02:00
hooks.html.in docs: fix misc spelling errors reported by codespell 2020-10-05 10:28:37 +01:00
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migration.html.in docs: migration: remove xenmigr 2021-01-05 13:40:25 +01:00
mobile.css docs: add advanced search capabilities 2019-04-11 15:20:17 +01:00
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newapi.xsl docs: fix libvirt go-import metadata in pages and links in 404 page 2020-08-04 17:06:33 +01:00
newreposetup.rst docs: Document CIRRUS_GITHUB_REPO variable 2020-06-11 12:03:41 +02:00
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platforms.rst docs/platforms: Drop separate link to qemu-kvm on repology.org 2021-04-12 16:09:41 +02:00
programming-languages.rst Fix capitalization "CLang" -> "Clang" 2020-11-12 15:01:42 +01:00
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strategy.html.in docs: fix misc spelling errors reported by codespell 2020-10-05 10:28:37 +01:00
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subsite.xsl docs: fix libvirt go-import metadata in pages and links in 404 page 2020-08-04 17:06:33 +01:00
support.html.in docs: Grammar and spelling fixes 2018-05-03 12:40:37 +01:00
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