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Add Ubuntu 26.04 cloud image

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Download the Ubuntu 26.04 LTS server cloud image (release 20260927) for
amd64 and arm64 from the TUNA, NJU and official mirrors, verified with the
pinned SHA256 checksums from the release's SHA256SUMS.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Kwxp2XWvKnuEBifnCbhyX5
This commit is contained in:
GuofangandClaude Opus 5.5 committed 2026-10-15 09:00:08 +08:00
1 parent 5ba114f5ad
commit 6286495d27
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README.md
+8 -5
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@@ -18,6 +18,7 @@ Download or check selected targets:
./download-images.sh debian13 ./download-images.sh debian13
./download-images.sh almalinux10 ./download-images.sh almalinux10
./download-images.sh fedora44 ./download-images.sh fedora44
./download-images.sh ubuntu2604
./download-images.sh virtio-win ./download-images.sh virtio-win
``` ```
@@ -36,6 +37,7 @@ The path interface prints one absolute path without downloading anything:
./download-images.sh --print-path debian13 ./download-images.sh --print-path debian13
./download-images.sh --print-path almalinux10 ./download-images.sh --print-path almalinux10
./download-images.sh --print-path fedora44 ./download-images.sh --print-path fedora44
./download-images.sh --print-path ubuntu2604
./download-images.sh --print-path virtio-win ./download-images.sh --print-path virtio-win
./download-images.sh --print-path windows11 ./download-images.sh --print-path windows11
./download-images.sh --print-path windows11 --iso ./download-images.sh --print-path windows11 --iso
@@ -48,13 +50,14 @@ ISO (for example `Win11_25H2_English_x64_v2.iso` →
existing `*Win*11*x64*.qcow2` in `base-qcow2/` is used instead. existing `*Win*11*x64*.qcow2` in `base-qcow2/` is used instead.
Download URLs can be overridden with `DEBIAN_IMAGE_URL`, `ALMA_IMAGE_URL`, Download URLs can be overridden with `DEBIAN_IMAGE_URL`, `ALMA_IMAGE_URL`,
`FEDORA_IMAGE_URL`, and `VIRTIO_WIN_ISO_URL`. Each may list several mirrors of `FEDORA_IMAGE_URL`, `UBUNTU_IMAGE_URL`, and `VIRTIO_WIN_ISO_URL`. Each may
the same file, separated by whitespace; the Fedora image defaults to the TUNA, list several mirrors of the same file, separated by whitespace; the Fedora
BFSU and NJU mirrors. image defaults to the TUNA, BFSU and NJU mirrors, and the Ubuntu image to the
TUNA, NJU and official cloud-images.ubuntu.com mirrors.
When [aria2](https://aria2.github.io/) is installed (`aria2c`), an image is When [aria2](https://aria2.github.io/) is installed (`aria2c`), an image is
downloaded from all of its mirrors at once, with a single connection to each downloaded from all of its mirrors at once, with a single connection to each
mirror. Without it, `curl` (or `wget`) tries the mirrors in order. A partial mirror. Without it, `curl` (or `wget`) tries the mirrors in order. A partial
download is only resumed with the same downloader and mirror list; otherwise download is only resumed with the same downloader and mirror list; otherwise
it starts over. The Fedora checksum can be it starts over. The Fedora and Ubuntu checksums can be overridden with
overridden with `FEDORA_IMAGE_SHA256` when using a custom image. `FEDORA_IMAGE_SHA256` and `UBUNTU_IMAGE_SHA256` when using a custom image.
download-images.sh
+25 -3
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@@ -19,11 +19,16 @@ if [[ "$image_arch" == arm64 ]]; then
debian_image="${base_qcow2_dir}/debian-13-generic-arm64-20260810-2566.qcow2" debian_image="${base_qcow2_dir}/debian-13-generic-arm64-20260810-2566.qcow2"
alma_image="${base_qcow2_dir}/AlmaLinux-10-GenericCloud-10.2-20260526.0.aarch64.qcow2" alma_image="${base_qcow2_dir}/AlmaLinux-10-GenericCloud-10.2-20260526.0.aarch64.qcow2"
fedora_image="${base_qcow2_dir}/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2" fedora_image="${base_qcow2_dir}/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2"
ubuntu_image="${base_qcow2_dir}/ubuntu-26.04-server-cloudimg-arm64-20260927.img"
debian_url_default="https://cloud.debian.org/images/cloud/trixie/20260810-2566/debian-13-generic-arm64-20260810-2566.qcow2" debian_url_default="https://cloud.debian.org/images/cloud/trixie/20260810-2566/debian-13-generic-arm64-20260810-2566.qcow2"
alma_url_default="https://repo.almalinux.org/almalinux/10/cloud/aarch64/images/AlmaLinux-10-GenericCloud-10.2-20260526.0.aarch64.qcow2" alma_url_default="https://repo.almalinux.org/almalinux/10/cloud/aarch64/images/AlmaLinux-10-GenericCloud-10.2-20260526.0.aarch64.qcow2"
fedora_url_default="https://mirrors.tuna.tsinghua.edu.cn/fedora/releases/44/Cloud/aarch64/images/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2 fedora_url_default="https://mirrors.tuna.tsinghua.edu.cn/fedora/releases/44/Cloud/aarch64/images/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2
https://mirrors.bfsu.edu.cn/fedora/releases/44/Cloud/aarch64/images/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2 https://mirrors.bfsu.edu.cn/fedora/releases/44/Cloud/aarch64/images/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2
https://mirrors.nju.edu.cn/fedora/releases/44/Cloud/aarch64/images/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2" https://mirrors.nju.edu.cn/fedora/releases/44/Cloud/aarch64/images/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2"
ubuntu_url_default="https://mirrors.tuna.tsinghua.edu.cn/ubuntu-cloud-images/resolute/20260927/resolute-server-cloudimg-arm64.img
https://mirrors.nju.edu.cn/ubuntu-cloud-images/releases/26.04/release-20260927/ubuntu-26.04-server-cloudimg-arm64.img
https://cloud-images.ubuntu.com/releases/26.04/release-20260927/ubuntu-26.04-server-cloudimg-arm64.img"
ubuntu_sha256_default="63a93bd5a8d76e33b15ceb5daa3657bd79be804748051ab178e643b0f5da22e7"
# TODO: these were pinned for the amd64/x86_64 builds; verification is # TODO: these were pinned for the amd64/x86_64 builds; verification is
# skipped (empty default) for the arm64/aarch64 builds until their # skipped (empty default) for the arm64/aarch64 builds until their
# checksums are fetched and pinned via DEBIAN_IMAGE_SHA512 / # checksums are fetched and pinned via DEBIAN_IMAGE_SHA512 /
@@ -35,14 +40,19 @@ else
debian_image="${base_qcow2_dir}/debian-13-generic-amd64-20260810-2566.qcow2" debian_image="${base_qcow2_dir}/debian-13-generic-amd64-20260810-2566.qcow2"
alma_image="${base_qcow2_dir}/AlmaLinux-10-GenericCloud-10.2-20260526.0.x86_64.qcow2" alma_image="${base_qcow2_dir}/AlmaLinux-10-GenericCloud-10.2-20260526.0.x86_64.qcow2"
fedora_image="${base_qcow2_dir}/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2" fedora_image="${base_qcow2_dir}/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2"
ubuntu_image="${base_qcow2_dir}/ubuntu-26.04-server-cloudimg-amd64-20260927.img"
debian_url_default="https://cloud.debian.org/images/cloud/trixie/20260810-2566/debian-13-generic-amd64-20260810-2566.qcow2" debian_url_default="https://cloud.debian.org/images/cloud/trixie/20260810-2566/debian-13-generic-amd64-20260810-2566.qcow2"
alma_url_default="https://repo.almalinux.org/almalinux/10/cloud/x86_64/images/AlmaLinux-10-GenericCloud-10.2-20260526.0.x86_64.qcow2" alma_url_default="https://repo.almalinux.org/almalinux/10/cloud/x86_64/images/AlmaLinux-10-GenericCloud-10.2-20260526.0.x86_64.qcow2"
fedora_url_default="https://mirrors.tuna.tsinghua.edu.cn/fedora/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2 fedora_url_default="https://mirrors.tuna.tsinghua.edu.cn/fedora/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2
https://mirrors.bfsu.edu.cn/fedora/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2 https://mirrors.bfsu.edu.cn/fedora/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2
https://mirrors.nju.edu.cn/fedora/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2" https://mirrors.nju.edu.cn/fedora/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2"
ubuntu_url_default="https://mirrors.tuna.tsinghua.edu.cn/ubuntu-cloud-images/resolute/20260927/resolute-server-cloudimg-amd64.img
https://mirrors.nju.edu.cn/ubuntu-cloud-images/releases/26.04/release-20260927/ubuntu-26.04-server-cloudimg-amd64.img
https://cloud-images.ubuntu.com/releases/26.04/release-20260927/ubuntu-26.04-server-cloudimg-amd64.img"
debian_sha512_default="f6978100d8031c266d55d7815ceea7fcdeacf28e1e5834fdb9c94ac96880a054a6e6f8681c2d3b0584e0057eaf3ef7353856b85212d04134744faa9b3bb1f24f" debian_sha512_default="f6978100d8031c266d55d7815ceea7fcdeacf28e1e5834fdb9c94ac96880a054a6e6f8681c2d3b0584e0057eaf3ef7353856b85212d04134744faa9b3bb1f24f"
alma_sha256_default="47f2218668dd4776be140dd92fa3bea700be1766e2c7d88bdfd6a4b50f477b4d" alma_sha256_default="47f2218668dd4776be140dd92fa3bea700be1766e2c7d88bdfd6a4b50f477b4d"
fedora_sha256_default="28680fe5b371a5a82ebf43a31926e086a168e59949d03969c5093e7071f90b7f" fedora_sha256_default="28680fe5b371a5a82ebf43a31926e086a168e59949d03969c5093e7071f90b7f"
ubuntu_sha256_default="8800651811af9a85465ad1d552add729947bb16488dddb4a9b5305a3d97332b2"
fi fi
virtio_image="${tools_iso_dir}/virtio-win.iso" virtio_image="${tools_iso_dir}/virtio-win.iso"
@@ -89,19 +99,21 @@ windows_qcow2_path() {
debian_url="${DEBIAN_IMAGE_URL:-$debian_url_default}" debian_url="${DEBIAN_IMAGE_URL:-$debian_url_default}"
alma_url="${ALMA_IMAGE_URL:-$alma_url_default}" alma_url="${ALMA_IMAGE_URL:-$alma_url_default}"
fedora_url="${FEDORA_IMAGE_URL:-$fedora_url_default}" fedora_url="${FEDORA_IMAGE_URL:-$fedora_url_default}"
ubuntu_url="${UBUNTU_IMAGE_URL:-$ubuntu_url_default}"
virtio_url="${VIRTIO_WIN_ISO_URL:-https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso}" virtio_url="${VIRTIO_WIN_ISO_URL:-https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso}"
debian_sha512="${DEBIAN_IMAGE_SHA512:-$debian_sha512_default}" debian_sha512="${DEBIAN_IMAGE_SHA512:-$debian_sha512_default}"
alma_sha256="${ALMA_IMAGE_SHA256:-$alma_sha256_default}" alma_sha256="${ALMA_IMAGE_SHA256:-$alma_sha256_default}"
fedora_sha256="${FEDORA_IMAGE_SHA256:-$fedora_sha256_default}" fedora_sha256="${FEDORA_IMAGE_SHA256:-$fedora_sha256_default}"
ubuntu_sha256="${UBUNTU_IMAGE_SHA256:-$ubuntu_sha256_default}"
force_download=false force_download=false
usage() { usage() {
cat <<EOF cat <<EOF
Usage: $(basename "$0") [--force] [all|debian13|almalinux10|fedora44|virtio-win] ... Usage: $(basename "$0") [--force] [all|debian13|almalinux10|fedora44|ubuntu2604|virtio-win] ...
$(basename "$0") --print-path TARGET [--iso] $(basename "$0") --print-path TARGET [--iso]
Download one or more shared VM images. With no arguments, all targets are Download one or more shared VM images. With no arguments, all targets are
processed. The Debian/AlmaLinux/Fedora image architecture (arm64 or amd64) processed. The Debian/AlmaLinux/Fedora/Ubuntu image architecture (arm64 or amd64)
is auto-detected from the host; override it with VM_IMAGE_ARCH. is auto-detected from the host; override it with VM_IMAGE_ARCH.
When aria2c is installed and an image has several mirrors, the image is When aria2c is installed and an image has several mirrors, the image is
@@ -125,6 +137,7 @@ print_image_path() {
debian13) printf '%s\n' "$debian_image" ;; debian13) printf '%s\n' "$debian_image" ;;
almalinux10) printf '%s\n' "$alma_image" ;; almalinux10) printf '%s\n' "$alma_image" ;;
fedora44) printf '%s\n' "$fedora_image" ;; fedora44) printf '%s\n' "$fedora_image" ;;
ubuntu2604) printf '%s\n' "$ubuntu_image" ;;
virtio-win) printf '%s\n' "$virtio_image" ;; virtio-win) printf '%s\n' "$virtio_image" ;;
windows11) windows11)
if [[ "$media" == iso ]]; then if [[ "$media" == iso ]]; then
@@ -171,7 +184,7 @@ fi
for target in "${targets[@]}"; do for target in "${targets[@]}"; do
case "$target" in case "$target" in
all|debian13|almalinux10|fedora44|virtio-win) ;; all|debian13|almalinux10|fedora44|ubuntu2604|virtio-win) ;;
-h|--help) usage; exit 0 ;; -h|--help) usage; exit 0 ;;
*) printf 'Error: unknown download target: %s\n' "$target" >&2; usage >&2; exit 2 ;; *) printf 'Error: unknown download target: %s\n' "$target" >&2; usage >&2; exit 2 ;;
esac esac
@@ -378,6 +391,15 @@ if wants_target fedora44; then
"$fedora_sha256" "$fedora_sha256"
fi fi
if wants_target ubuntu2604; then
download_file \
'Ubuntu 26.04 cloud image' \
"$ubuntu_url" \
"$ubuntu_image" \
sha256 \
"$ubuntu_sha256"
fi
if wants_target virtio-win; then if wants_target virtio-win; then
download_file \ download_file \
'VirtIO Windows tools ISO' \ 'VirtIO Windows tools ISO' \