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upgrade_repo_v2: Use atomic replace for supported backends

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This commit is contained in:
Michael Eischer 2022-05-01 20:07:29 +02:00
parent 7559d2f105
commit e36a40db10
13 changed files with 82 additions and 17 deletions
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12
internal/migrations/upgrade_repo_v2.go
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@ -53,17 +53,19 @@ func (*UpgradeRepoV2) Check(ctx context.Context, repo restic.Repository) (bool,
func (*UpgradeRepoV2) upgrade(ctx context.Context, repo restic.Repository) error {
h := restic.Handle{Type: restic.ConfigFile}
// now remove the original file
err := repo.Backend().Remove(ctx, h)
if err != nil {
return fmt.Errorf("remove config failed: %w", err)
if !repo.Backend().HasAtomicReplace() {
// remove the original file for backends which do not support atomic overwriting
err := repo.Backend().Remove(ctx, h)
if err != nil {
return fmt.Errorf("remove config failed: %w", err)
}
}
// upgrade config
cfg := repo.Config()
cfg.Version = 2
_, err = repo.SaveJSONUnpacked(ctx, restic.ConfigFile, cfg)
_, err := repo.SaveJSONUnpacked(ctx, restic.ConfigFile, cfg)
if err != nil {
return fmt.Errorf("save new config file failed: %w", err)
}