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Implement zstd compression

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Zstd compression can be enabled by providing `-zstd` or `-zstd-level <level>`
to `init`, `add`, or `backup`. With `-zstd` the compression level will be
`default`, and with `-zstd-level` the level can be any of `fastest`, `default`,
`better`, or `best`.
This commit is contained in:
Gilbert Chen
2023-03-26 21:31:51 -04:00
parent 9f276047db
commit 53b0f3f7b6
6 changed files with 138 additions and 5 deletions
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6
src/duplicacy_backupmanager.go
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@@ -47,6 +47,10 @@ func (manager *BackupManager) SetDryRun(dryRun bool) {
manager.config.dryRun = dryRun
}
func (manager *BackupManager) SetCompressionLevel(level int) {
manager.config.CompressionLevel = level
}
// CreateBackupManager creates a backup manager using the specified 'storage'. 'snapshotID' is a unique id to
// identify snapshots created for this repository. 'top' is the top directory of the repository. 'password' is the
// master key which can be nil if encryption is not enabled.
@@ -138,6 +142,8 @@ func (manager *BackupManager) Backup(top string, quickMode bool, threads int, ta
LOG_DEBUG("BACKUP_PARAMETERS", "top: %s, quick: %t, tag: %s", top, quickMode, tag)
manager.config.PrintCompressionLevel()
if manager.config.DataShards != 0 && manager.config.ParityShards != 0 {
LOG_INFO("BACKUP_ERASURECODING", "Erasure coding is enabled with %d data shards and %d parity shards",
manager.config.DataShards, manager.config.ParityShards)