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Merge pull request #3136 from restic/rawtaz-copy-doc

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doc: Emphasize double transfer and duplication in copy command
This commit is contained in:
Alexander Neumann
2020-11-29 13:57:10 +01:00
committed by GitHub
parent a7b49c4889 f70b10d0ee
commit 04d856e601
2 changed files with 32 additions and 19 deletions
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cmd/restic/cmd_copy.go
+13 -6
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@@ -14,12 +14,19 @@ var cmdCopy = &cobra.Command{
Use: "copy [flags] [snapshotID ...]",
Short: "Copy snapshots from one repository to another",
Long: `
The "copy" command copies one or more snapshots from one repository to another
repository. Note that this will have to read (download) and write (upload) the
entire snapshot(s) due to the different encryption keys on the source and
destination, and that transferred files are not re-chunked, which may break
their deduplication. This can be mitigated by the "--copy-chunker-params"
option when initializing a new destination repository using the "init" command.
The "copy" command copies one or more snapshots from one repository to another.
NOTE: This process will have to both download (read) and upload (write) the
entire snapshot(s) due to the different encryption keys used in the source and
destination repositories. This /may incur higher bandwidth usage and costs/ than
expected during normal backup runs.
NOTE: The copying process does not re-chunk files, which may break deduplication
between the files copied and files already stored in the destination repository.
This means that copied files, which existed in both the source and destination
repository, /may occupy up to twice their space/ in the destination repository.
This can be mitigated by the "--copy-chunker-params" option when initializing a
new destination repository using the "init" command.
`,
RunE: func(cmd *cobra.Command, args []string) error {
return runCopy(copyOptions, globalOptions, args)