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qemu_saveimage: add zstd to supported compression formats

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Extend the list of supported formats, update and clarify comment
in qemu.conf.in (removed misleading sentence about the order of
compression format types).

Resolves: https://gitlab.com/libvirt/libvirt/-/issues/589
Signed-off-by: Adam Julis <ajulis@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Adam Julis 2024-04-26 20:28:47 +02:00 committed by Michal Privoznik
parent 3db81ffcc2
commit 142ed263c0
3 changed files with 6 additions and 4 deletions
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1
libvirt.spec.in
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@ -815,6 +815,7 @@ Requires: gzip
Requires: bzip2 Requires: bzip2
Requires: lzop Requires: lzop
Requires: xz Requires: xz
Requires: zstd
Requires: systemd-container Requires: systemd-container
Requires: swtpm-tools Requires: swtpm-tools
%if %{with_numad} %if %{with_numad}

7
src/qemu/qemu.conf.in
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@ -582,10 +582,9 @@
# memory from the domain is dumped out directly to a file. If you have # memory from the domain is dumped out directly to a file. If you have
# guests with a large amount of memory, however, this can take up quite # guests with a large amount of memory, however, this can take up quite
# a bit of space. If you would like to compress the images while they # a bit of space. If you would like to compress the images while they
# are being saved to disk, you can also set "lzop", "gzip", "bzip2", or "xz" # are being saved to disk, you can also set "zstd", "lzop", "gzip", "bzip2",
# for save_image_format. Note that this means you slow down the process of # or "xz" for save_image_format. Note that this means you slow down the process
# saving a domain in order to save disk space; the list above is in descending # of saving a domain in order to save disk space.
# order by performance and ascending order by compression ratio.
# #
# save_image_format is used when you use 'virsh save' or 'virsh managedsave' # save_image_format is used when you use 'virsh save' or 'virsh managedsave'
# at scheduled saving, and it is an error if the specified save_image_format # at scheduled saving, and it is an error if the specified save_image_format

2
src/qemu/qemu_saveimage.c
View File

@ -47,6 +47,7 @@ typedef enum {
*/ */
QEMU_SAVE_FORMAT_XZ = 3, QEMU_SAVE_FORMAT_XZ = 3,
QEMU_SAVE_FORMAT_LZOP = 4, QEMU_SAVE_FORMAT_LZOP = 4,
QEMU_SAVE_FORMAT_ZSTD = 5,
/* Note: add new members only at the end. /* Note: add new members only at the end.
These values are used in the on-disk format. These values are used in the on-disk format.
Do not change or re-use numbers. */ Do not change or re-use numbers. */
@ -62,6 +63,7 @@ VIR_ENUM_IMPL(qemuSaveCompression,
"bzip2", "bzip2",
"xz", "xz",
"lzop", "lzop",
"zstd",
); );
static inline void static inline void