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SCHED-411: use native pyxis #2208
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69 changes: 69 additions & 0 deletions
69
helm/slurm-cluster/slurm_scripts/pyxis_caching_importer.sh
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| #!/bin/bash | ||
| # Patched version of https://github.com/NVIDIA/pyxis/blob/v0.23.0/importers/caching_importer.sh | ||
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| set -euo pipefail | ||
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| readonly cmd="$1" | ||
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| readonly cache_dir="${ENROOT_CONTAINER_IMAGES_CACHE_DIR:-/var/cache/enroot-container-images}" | ||
| readonly squashfs_temp_path="${cache_dir}/${SLURM_JOB_ID}.${SLURM_STEP_ID}.sqsh" | ||
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| # Since it's not an ephemeral squashfs file, we can use compression. | ||
| export ENROOT_SQUASH_OPTIONS="-comp zstd -Xcompression-level 3 -b 1M" | ||
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| case "${cmd}" in | ||
| get) | ||
| if [ $# -ne 2 ]; then | ||
| echo "usage: $0 get URI" >&2 | ||
| exit 1 | ||
| fi | ||
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| readonly image_uri="$2" | ||
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| mkdir -p -m 700 "${cache_dir}" | ||
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| readonly digest=$(enroot digest "${image_uri}") | ||
| if [ -z "${digest}" ]; then | ||
| echo "error: could not retrieve digest for image: ${image_uri}" >&2 | ||
| exit 1 | ||
| fi | ||
| readonly squashfs_path="${cache_dir}/${digest}.sqsh" | ||
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| if [ ! -e "${squashfs_path}" ]; then | ||
| # TODO: use `digest` approach once 406 Not Acceptable is tolerated in enroot | ||
| # https://github.com/NVIDIA/enroot/pull/263 | ||
| # if [[ "${image_uri}" == *"@${digest}" ]]; then | ||
| # # URI already has the digest in it. | ||
| # enroot import --output "${squashfs_temp_path}" "${image_uri}" >&2 | ||
| # else | ||
| # # Add the digest to the URI. | ||
| # enroot import --output "${squashfs_temp_path}" "${image_uri}@${digest}" >&2 | ||
| # fi | ||
| enroot import --output "${squashfs_temp_path}" "${image_uri}" >&2 | ||
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| # Save the URI as an extended attribute. | ||
| if command -v "setfattr" >/dev/null; then | ||
| setfattr -n user.image_uri -v "${image_uri}" "${squashfs_temp_path}" | ||
| fi | ||
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| chmod 777 "${squashfs_temp_path}" | ||
| mv -n "${squashfs_temp_path}" "${squashfs_path}" | ||
| fi | ||
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| # Output the squashfs path on stdout for pyxis to read | ||
| echo "${squashfs_path}" | ||
| ;; | ||
| release) | ||
| if [ $# -ne 1 ]; then | ||
| echo "usage: $0 release" >&2 | ||
| exit 1 | ||
| fi | ||
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| # Remove temporary file if still present (e.g. "get" was interrupted) | ||
| rm -f "${squashfs_temp_path}" | ||
| ;; | ||
| *) | ||
| echo "error: unknown command: ${cmd}" >&2 | ||
| exit 1 | ||
| ;; | ||
| esac | ||
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