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snapshots: serialize version file first #27192

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Aug 17, 2022
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snapshots: serialize version file first #27192

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4 changes: 3 additions & 1 deletion runtime/src/snapshot_utils.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -345,10 +345,12 @@ pub fn archive_snapshot_package(

let do_archive_files = |encoder: &mut dyn Write| -> Result<()> {
let mut archive = tar::Builder::new(encoder);
// Serialize the version and snapshots files before accounts so we can quickly determine the version
// and other bank fields. This is necessary if we want to interleave unpacking with reconstruction
archive.append_path_with_name(staging_dir.as_ref().join("version"), "version")?;
for dir in ["snapshots", "accounts"] {
archive.append_dir_all(dir, staging_dir.as_ref().join(dir))?;
}
archive.append_path_with_name(staging_dir.as_ref().join("version"), "version")?;
archive.into_inner()?;
Ok(())
};
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