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doc/mkdocs: Improve code hilighting

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Additionally, refresh the restic sample output.
This commit is contained in:
Alexander Neumann 2016-11-08 20:23:39 +01:00
parent 149c01a86a
commit 5e721afb5d
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doc/Design.md
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@ -62,11 +62,13 @@ overhead is 32 bytes. For each file, a new random IV is selected.
The file `config` is encrypted this way and contains a JSON document like the The file `config` is encrypted this way and contains a JSON document like the
following: following:
{ ```json
"version": 1, {
"id": "5956a3f67a6230d4a92cefb29529f10196c7d92582ec305fd71ff6d331d6271b", "version": 1,
"chunker_polynomial": "25b468838dcb75" "id": "5956a3f67a6230d4a92cefb29529f10196c7d92582ec305fd71ff6d331d6271b",
} "chunker_polynomial": "25b468838dcb75"
}
```
After decryption, restic first checks that the version field contains a version After decryption, restic first checks that the version field contains a version
number that it understands, otherwise it aborts. At the moment, the version is number that it understands, otherwise it aborts. At the moment, the version is
@ -102,7 +104,9 @@ The basic layout of a sample restic repository is shown here:
A repository can be initialized with the `restic init` command, e.g.: A repository can be initialized with the `restic init` command, e.g.:
$ restic -r /tmp/restic-repo init ```console
$ restic -r /tmp/restic-repo init
```
Pack Format Pack Format
----------- -----------
@ -163,35 +167,37 @@ used to reconstruct the index. The files are encrypted and authenticated like
Data and Tree Blobs, so the outer structure is `IV || Ciphertext || MAC` again. Data and Tree Blobs, so the outer structure is `IV || Ciphertext || MAC` again.
The plaintext consists of a JSON document like the following: The plaintext consists of a JSON document like the following:
```json
{
"supersedes": [
"ed54ae36197f4745ebc4b54d10e0f623eaaaedd03013eb7ae90df881b7781452"
],
"packs": [
{ {
"supersedes": [ "id": "73d04e6125cf3c28a299cc2f3cca3b78ceac396e4fcf9575e34536b26782413c",
"ed54ae36197f4745ebc4b54d10e0f623eaaaedd03013eb7ae90df881b7781452" "blobs": [
],
"packs": [
{ {
"id": "73d04e6125cf3c28a299cc2f3cca3b78ceac396e4fcf9575e34536b26782413c", "id": "3ec79977ef0cf5de7b08cd12b874cd0f62bbaf7f07f3497a5b1bbcc8cb39b1ce",
"blobs": [ "type": "data",
{ "offset": 0,
"id": "3ec79977ef0cf5de7b08cd12b874cd0f62bbaf7f07f3497a5b1bbcc8cb39b1ce", "length": 25
"type": "data", },{
"offset": 0, "id": "9ccb846e60d90d4eb915848add7aa7ea1e4bbabfc60e573db9f7bfb2789afbae",
"length": 25 "type": "tree",
},{ "offset": 38,
"id": "9ccb846e60d90d4eb915848add7aa7ea1e4bbabfc60e573db9f7bfb2789afbae", "length": 100
"type": "tree", },
"offset": 38, {
"length": 100 "id": "d3dc577b4ffd38cc4b32122cabf8655a0223ed22edfd93b353dc0c3f2b0fdf66",
}, "type": "data",
{ "offset": 150,
"id": "d3dc577b4ffd38cc4b32122cabf8655a0223ed22edfd93b353dc0c3f2b0fdf66", "length": 123
"type": "data", }
"offset": 150,
"length": 123
}
]
}, [...]
] ]
} }, [...]
]
}
```
This JSON document lists Packs and the blobs contained therein. In this This JSON document lists Packs and the blobs contained therein. In this
example, the Pack `73d04e61` contains two data Blobs and one Tree blob, the example, the Pack `73d04e61` contains two data Blobs and one Tree blob, the
@ -258,14 +264,16 @@ document which contains the master encryption and message authentication keys
for this repository (encoded in Base64). The command `restic cat masterkey` can for this repository (encoded in Base64). The command `restic cat masterkey` can
be used as follows to decrypt and pretty-print the master key: be used as follows to decrypt and pretty-print the master key:
$ restic -r /tmp/restic-repo cat masterkey ```console
{ $ restic -r /tmp/restic-repo cat masterkey
"mac": { {
"k": "evFWd9wWlndL9jc501268g==", "mac": {
"r": "E9eEDnSJZgqwTOkDtOp+Dw==" "k": "evFWd9wWlndL9jc501268g==",
}, "r": "E9eEDnSJZgqwTOkDtOp+Dw=="
"encrypt": "UQCqa0lKZ94PygPxMRqkePTZnHRYh1k1pX2k2lM2v3Q=", },
} "encrypt": "UQCqa0lKZ94PygPxMRqkePTZnHRYh1k1pX2k2lM2v3Q=",
}
```
All data in the repository is encrypted and authenticated with these master keys. All data in the repository is encrypted and authenticated with these master keys.
For encryption, the AES-256 algorithm in Counter mode is used. For message For encryption, the AES-256 algorithm in Counter mode is used. For message
@ -286,17 +294,19 @@ string is unique and used within restic to uniquely identify a snapshot.
The command `restic cat snapshot` can be used as follows to decrypt and The command `restic cat snapshot` can be used as follows to decrypt and
pretty-print the contents of a snapshot file: pretty-print the contents of a snapshot file:
$ restic -r /tmp/restic-repo cat snapshot 22a5af1b ```console
enter password for repository: $ restic -r /tmp/restic-repo cat snapshot 22a5af1b
{ enter password for repository:
"time": "2015-01-02T18:10:50.895208559+01:00", {
"tree": "2da81727b6585232894cfbb8f8bdab8d1eccd3d8f7c92bc934d62e62e618ffdf", "time": "2015-01-02T18:10:50.895208559+01:00",
"dir": "/tmp/testdata", "tree": "2da81727b6585232894cfbb8f8bdab8d1eccd3d8f7c92bc934d62e62e618ffdf",
"hostname": "kasimir", "dir": "/tmp/testdata",
"username": "fd0", "hostname": "kasimir",
"uid": 1000, "username": "fd0",
"gid": 100 "uid": 1000,
} "gid": 100
}
```
Here it can be seen that this snapshot represents the contents of the directory Here it can be seen that this snapshot represents the contents of the directory
`/tmp/testdata`. The most important field is `tree`. `/tmp/testdata`. The most important field is `tree`.
@ -319,26 +329,28 @@ subdirectory of the directory `data`.
The command `restic cat tree` can be used to inspect the tree referenced above: The command `restic cat tree` can be used to inspect the tree referenced above:
$ restic -r /tmp/restic-repo cat tree b8138ab08a4722596ac89c917827358da4672eac68e3c03a8115b88dbf4bfb59 ```console
enter password for repository: $ restic -r /tmp/restic-repo cat tree b8138ab08a4722596ac89c917827358da4672eac68e3c03a8115b88dbf4bfb59
enter password for repository:
{
"nodes": [
{ {
"nodes": [ "name": "testdata",
{ "type": "dir",
"name": "testdata", "mode": 493,
"type": "dir", "mtime": "2014-12-22T14:47:59.912418701+01:00",
"mode": 493, "atime": "2014-12-06T17:49:21.748468803+01:00",
"mtime": "2014-12-22T14:47:59.912418701+01:00", "ctime": "2014-12-22T14:47:59.912418701+01:00",
"atime": "2014-12-06T17:49:21.748468803+01:00", "uid": 1000,
"ctime": "2014-12-22T14:47:59.912418701+01:00", "gid": 100,
"uid": 1000, "user": "fd0",
"gid": 100, "inode": 409704562,
"user": "fd0", "content": null,
"inode": 409704562, "subtree": "b26e315b0988ddcd1cee64c351d13a100fedbc9fdbb144a67d1b765ab280b4dc"
"content": null,
"subtree": "b26e315b0988ddcd1cee64c351d13a100fedbc9fdbb144a67d1b765ab280b4dc"
}
]
} }
]
}
```
A tree contains a list of entries (in the field `nodes`) which contain meta A tree contains a list of entries (in the field `nodes`) which contain meta
data like a name and timestamps. When the entry references a directory, the data like a name and timestamps. When the entry references a directory, the
@ -347,30 +359,32 @@ field `subtree` contains the plain text ID of another tree object.
When the command `restic cat tree` is used, the storage hash is needed to print When the command `restic cat tree` is used, the storage hash is needed to print
a tree. The tree referenced above can be dumped as follows: a tree. The tree referenced above can be dumped as follows:
$ restic -r /tmp/restic-repo cat tree 8b238c8811cc362693e91a857460c78d3acf7d9edb2f111048691976803cf16e ```console
enter password for repository: $ restic -r /tmp/restic-repo cat tree 8b238c8811cc362693e91a857460c78d3acf7d9edb2f111048691976803cf16e
enter password for repository:
{
"nodes": [
{ {
"nodes": [ "name": "testfile",
{ "type": "file",
"name": "testfile", "mode": 420,
"type": "file", "mtime": "2014-12-06T17:50:23.34513538+01:00",
"mode": 420, "atime": "2014-12-06T17:50:23.338468713+01:00",
"mtime": "2014-12-06T17:50:23.34513538+01:00", "ctime": "2014-12-06T17:50:23.34513538+01:00",
"atime": "2014-12-06T17:50:23.338468713+01:00", "uid": 1000,
"ctime": "2014-12-06T17:50:23.34513538+01:00", "gid": 100,
"uid": 1000, "user": "fd0",
"gid": 100, "inode": 416863351,
"user": "fd0", "size": 1234,
"inode": 416863351, "links": 1,
"size": 1234, "content": [
"links": 1, "50f77b3b4291e8411a027b9f9b9e64658181cc676ce6ba9958b95f268cb1109d"
"content": [
"50f77b3b4291e8411a027b9f9b9e64658181cc676ce6ba9958b95f268cb1109d"
]
},
[...]
] ]
} },
[...]
]
}
```
This tree contains a file entry. This time, the `subtree` field is not present This tree contains a file entry. This time, the `subtree` field is not present
and the `content` field contains a list with one plain text SHA-256 hash. and the `content` field contains a list with one plain text SHA-256 hash.
@ -378,9 +392,11 @@ and the `content` field contains a list with one plain text SHA-256 hash.
The command `restic cat data` can be used to extract and decrypt data given a The command `restic cat data` can be used to extract and decrypt data given a
plaintext ID, e.g. for the data mentioned above: plaintext ID, e.g. for the data mentioned above:
$ restic -r /tmp/restic-repo cat blob 50f77b3b4291e8411a027b9f9b9e64658181cc676ce6ba9958b95f268cb1109d | sha256sum ```console
enter password for repository: $ restic -r /tmp/restic-repo cat blob 50f77b3b4291e8411a027b9f9b9e64658181cc676ce6ba9958b95f268cb1109d | sha256sum
50f77b3b4291e8411a027b9f9b9e64658181cc676ce6ba9958b95f268cb1109d - enter password for repository:
50f77b3b4291e8411a027b9f9b9e64658181cc676ce6ba9958b95f268cb1109d -
```
As can be seen from the output of the program `sha256sum`, the hash matches the As can be seen from the output of the program `sha256sum`, the hash matches the
plaintext hash from the map included in the tree above, so the correct data has plaintext hash from the map included in the tree above, so the correct data has
@ -404,15 +420,17 @@ A lock is a file in the subdir `locks` whose filename is the storage ID of
the contents. It is encrypted and authenticated the same way as other files the contents. It is encrypted and authenticated the same way as other files
in the repository and contains the following JSON structure: in the repository and contains the following JSON structure:
{ ```json
"time": "2015-06-27T12:18:51.759239612+02:00", {
"exclusive": false, "time": "2015-06-27T12:18:51.759239612+02:00",
"hostname": "kasimir", "exclusive": false,
"username": "fd0", "hostname": "kasimir",
"pid": 13607, "username": "fd0",
"uid": 1000, "pid": 13607,
"gid": 100 "uid": 1000,
} "gid": 100
}
```
The field `exclusive` defines the type of lock. When a new lock is to be The field `exclusive` defines the type of lock. When a new lock is to be
created, restic checks all locks in the repository. When a lock is found, it created, restic checks all locks in the repository. When a lock is found, it

564
doc/Manual.md
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@ -6,16 +6,22 @@ functionality provided by restic.
If you are using Mac OS X, you can install restic using the If you are using Mac OS X, you can install restic using the
[homebrew](http://brew.sh/) packet manager: [homebrew](http://brew.sh/) packet manager:
$ brew tap restic/restic ```console
$ brew install restic $ brew tap restic/restic
$ brew install restic
```
On archlinux, there is a package called `restic-git` which can be installed from AUR, e.g. with `pacaur`: On archlinux, there is a package called `restic-git` which can be installed from AUR, e.g. with `pacaur`:
$ pacaur -S restic-git ```console
$ pacaur -S restic-git
```
At debian stable you can install 'go' directly from the repositories (as root): At debian stable you can install 'go' directly from the repositories (as root):
$ apt-get install golang-go ```console
$ apt-get install golang-go
```
after installation of 'go' go straight forward to 'git clone [...]' after installation of 'go' go straight forward to 'git clone [...]'
@ -28,80 +34,84 @@ instructions how to install Go.
In order to build restic from source, execute the following steps: In order to build restic from source, execute the following steps:
$ git clone https://github.com/restic/restic ```console
[...] $ git clone https://github.com/restic/restic
[...]
$ cd restic $ cd restic
$ go run build.go $ go run build.go
```
At the moment, the only tested compiler for restic is the official Go compiler. At the moment, the only tested compiler for restic is the official Go compiler.
Building restic with gccgo may work, but is not supported. Building restic with gccgo may work, but is not supported.
Usage help is available: Usage help is available:
$ ./restic --help ```console
Usage: $ ./restic --help
restic [OPTIONS] <command> restic is a backup program which allows saving multiple revisions of files and
directories in an encrypted repository stored on different backends.
Application Options: Usage:
-r, --repo= Repository directory to backup to/restore from restic [command]
--cache-dir= Directory to use as a local cache
-q, --quiet Do not output comprehensive progress report (false)
--no-lock Do not lock the repo, this allows some operations on read-only repos. (false)
-o, --option= Specify options in the form 'foo.key=value'
Help Options: Available Commands:
-h, --help Show this help message backup create a new backup of files and/or directories
cat print internal objects to stdout
check check the repository for errors
find find a file or directory
forget forget removes snapshots from the repository
init initialize a new repository
key manage keys (passwords)
list list items in the repository
ls list files in a snapshot
mount mount the repository
prune remove unneeded data from the repository
rebuild-index build a new index file
restore extract the data from a snapshot
snapshots list all snapshots
unlock remove locks other processes created
version Print version information
Available commands: Flags:
backup save file/directory --no-lock do not lock the repo, this allows some operations on read-only repos
cat dump something -p, --password-file string read the repository password from a file
check check the repository -q, --quiet do not outputcomprehensive progress report
find find a file/directory -r, --repo string repository to backup to or restore from (default: $RESTIC_REPOSITORY)
forget removes snapshots from a repository
init create repository Use "restic [command] --help" for more information about a command.
key manage keys ```
list lists data
ls list files
mount mount a repository
prune removes content from a repository
rebuild-index rebuild the index
restore restore a snapshot
snapshots show snapshots
unlock remove locks
version display version
Similar to programs such as `git`, restic has a number of sub-commands. You can Similar to programs such as `git`, restic has a number of sub-commands. You can
see these commands in the listing above. Each sub-command may have own see these commands in the listing above. Each sub-command may have own
command-line options, and there is a help option for each command which lists command-line options, and there is a help option for each command which lists
them, e.g. for the `backup` command: them, e.g. for the `backup` command:
$ ./restic backup --help ```console
Usage: $ ./restic backup --help
restic [OPTIONS] backup DIR/FILE [DIR/FILE] [...] The "backup" command creates a new snapshot and saves the files and directories
given as the arguments.
The backup command creates a snapshot of a file or directory Usage:
restic backup [flags] FILE/DIR [FILE/DIR] ...
Application Options: Flags:
-r, --repo= Repository directory to backup to/restore from (/tmp/repo) -e, --exclude pattern exclude a pattern (can be specified multiple times)
-p, --password-file= Read the repository password from a file --exclude-file string read exclude patterns from a file
--cache-dir= Directory to use as a local cache -f, --force force re-reading the target files/directories. Overrides the "parent" flag
-q, --quiet Do not output comprehensive progress report (false) -x, --one-file-system Exclude other file systems
--no-lock Do not lock the repo, this allows some operations on read-only repos. (false) --parent string use this parent snapshot (default: last snapshot in the repo that has the same target files/directories)
-o, --option= Specify options in the form 'foo.key=value' --stdin read backup from stdin
--stdin-filename string file name to use when reading from stdin
--tag tag add a tag for the new snapshot (can be specified multiple times)
Help Options: Global Flags:
-h, --help Show this help message --no-lock do not lock the repo, this allows some operations on read-only repos
-p, --password-file string read the repository password from a file
[backup command options] -q, --quiet do not outputcomprehensive progress report
-p, --parent= use this parent snapshot (default: last snapshot in repo that has the same target) -r, --repo string repository to backup to or restore from (default: $RESTIC_REPOSITORY)
-f, --force Force re-reading the target. Overrides the "parent" flag ```
-e, --exclude= Exclude a pattern (can be specified multiple times)
--exclude-file= Read exclude-patterns from file
--stdin read backup data from stdin
--stdin-filename= file name to use when reading from stdin (stdin)
--tag= Add a tag (can be specified multiple times)
Subcommand that support showing progress information such as `backup`, `check` and `prune` will do so unless Subcommand that support showing progress information such as `backup`, `check` and `prune` will do so unless
the quiet flag `-q` or `--quiet` is set. When running from a non-interactive console progress reporting will the quiet flag `-q` or `--quiet` is set. When running from a non-interactive console progress reporting will
@ -119,12 +129,14 @@ will be saved at.
In order to create a repository at `/tmp/backup`, run the following command and In order to create a repository at `/tmp/backup`, run the following command and
enter the same password twice: enter the same password twice:
$ restic init --repo /tmp/backup ```console
enter password for new backend: $ restic init --repo /tmp/backup
enter password again: enter password for new backend:
created restic backend 085b3c76b9 at /tmp/backup enter password again:
Please note that knowledge of your password is required to access the repository. created restic backend 085b3c76b9 at /tmp/backup
Losing your password means that your data is irrecoverably lost. Please note that knowledge of your password is required to access the repository.
Losing your password means that your data is irrecoverably lost.
```
Remembering your password is important! If you lose it, you won't be able to Remembering your password is important! If you lose it, you won't be able to
access data stored in the repository. access data stored in the repository.
@ -146,8 +158,10 @@ You can workaround this by using a special tool called `winpty` (look
[here](https://github.com/rprichard/winpty) for detail information). On MSYS2, [here](https://github.com/rprichard/winpty) for detail information). On MSYS2,
you can install `winpty` as follows: you can install `winpty` as follows:
$ pacman -S winpty ```console
$ winpty restic -r /tmp/backup init $ pacman -S winpty
$ winpty restic -r /tmp/backup init
```
# Create a snapshot # Create a snapshot
@ -155,13 +169,15 @@ Now we're ready to backup some data. The contents of a directory at a specific
point in time is called a "snapshot" in restic. Run the following command and point in time is called a "snapshot" in restic. Run the following command and
enter the repository password you chose above again: enter the repository password you chose above again:
$ restic -r /tmp/backup backup ~/work ```console
enter password for repository: $ restic -r /tmp/backup backup ~/work
scan [/home/user/work] enter password for repository:
scanned 764 directories, 1816 files in 0:00 scan [/home/user/work]
[0:29] 100.00% 54.732 MiB/s 1.582 GiB / 1.582 GiB 2580 / 2580 items 0 errors ETA 0:00 scanned 764 directories, 1816 files in 0:00
duration: 0:29, 54.47MiB/s [0:29] 100.00% 54.732 MiB/s 1.582 GiB / 1.582 GiB 2580 / 2580 items 0 errors ETA 0:00
snapshot 40dc1520 saved duration: 0:29, 54.47MiB/s
snapshot 40dc1520 saved
```
As you can see, restic created a backup of the directory and was pretty fast! As you can see, restic created a backup of the directory and was pretty fast!
The specific snapshot just created is identified by a sequence of hexadecimal The specific snapshot just created is identified by a sequence of hexadecimal
@ -170,40 +186,46 @@ characters, `40dc1520` in this case.
If you run the command again, restic will create another snapshot of your data, If you run the command again, restic will create another snapshot of your data,
but this time it's even faster. This is de-duplication at work! but this time it's even faster. This is de-duplication at work!
$ restic -r /tmp/backup backup ~/shared/work/web ```console
enter password for repository: $ restic -r /tmp/backup backup ~/shared/work/web
using parent snapshot 40dc1520aa6a07b7b3ae561786770a01951245d2367241e71e9485f18ae8228c enter password for repository:
scan [/home/user/work] using parent snapshot 40dc1520aa6a07b7b3ae561786770a01951245d2367241e71e9485f18ae8228c
scanned 764 directories, 1816 files in 0:00 scan [/home/user/work]
[0:00] 100.00% 0B/s 1.582 GiB / 1.582 GiB 2580 / 2580 items 0 errors ETA 0:00 scanned 764 directories, 1816 files in 0:00
duration: 0:00, 6572.38MiB/s [0:00] 100.00% 0B/s 1.582 GiB / 1.582 GiB 2580 / 2580 items 0 errors ETA 0:00
snapshot 79766175 saved duration: 0:00, 6572.38MiB/s
snapshot 79766175 saved
```
You can even backup individual files in the same repository. You can even backup individual files in the same repository.
$ restic -r /tmp/backup backup ~/work.txt ```console
scan [~/work.txt] $ restic -r /tmp/backup backup ~/work.txt
scanned 0 directories, 1 files in 0:00 scan [~/work.txt]
[0:00] 100.00% 0B/s 220B / 220B 1 / 1 items 0 errors ETA 0:00 scanned 0 directories, 1 files in 0:00
duration: 0:00, 0.03MiB/s [0:00] 100.00% 0B/s 220B / 220B 1 / 1 items 0 errors ETA 0:00
snapshot 31f7bd63 saved duration: 0:00, 0.03MiB/s
snapshot 31f7bd63 saved
```
In fact several hosts may use the same repository to backup directories and In fact several hosts may use the same repository to backup directories and
files leading to a greater de-duplication. files leading to a greater de-duplication.
You can exclude folders and files by specifying exclude-patterns. You can exclude folders and files by specifying exclude-patterns.
Either specify them with multiple `--exclude`'s or one `--exclude-file` Either specify them with multiple `--exclude`'s or one `--exclude-file`
$ cat exclude ```console
# exclude go-files $ cat exclude
*.go # exclude go-files
# exclude foo/x/y/z/bar foo/x/bar foo/bar *.go
foo/**/bar # exclude foo/x/y/z/bar foo/x/bar foo/bar
$ restic -r /tmp/backup backup ~/work --exclude=*.c --exclude-file=exclude foo/**/bar
$ restic -r /tmp/backup backup ~/work --exclude=*.c --exclude-file=exclude
```
Patterns use [`filepath.Glob`](https://golang.org/pkg/path/filepath/#Glob) internally, Patterns use [`filepath.Glob`](https://golang.org/pkg/path/filepath/#Glob) internally,
see [`filepath.Match`](https://golang.org/pkg/path/filepath/#Match) for syntax. see [`filepath.Match`](https://golang.org/pkg/path/filepath/#Match) for syntax.
Additionally `**` exludes arbitrary subdirectories. Additionally `**` exludes arbitrary subdirectories.
Environment-variables in exclude-files are expanded with [`os.ExpandEnv`](https://golang.org/pkg/os/#ExpandEnv). Environment-variables in exclude-files are expanded with [`os.ExpandEnv`](https://golang.org/pkg/os/#ExpandEnv).
By specifying the option `--one-file-system` you can instruct restic to only By specifying the option `--one-file-system` you can instruct restic to only
@ -211,7 +233,9 @@ backup files from the file systems the initially specified files or directories
reside on. For example, calling restic like this won't backup `/sys` or reside on. For example, calling restic like this won't backup `/sys` or
`/dev` on a Linux system: `/dev` on a Linux system:
$ restic -r /tmp/backup backup --one-file-system / ```console
$ restic -r /tmp/backup backup --one-file-system /
```
## Reading data from stdin ## Reading data from stdin
@ -219,7 +243,9 @@ Sometimes it can be nice to directly save the output of a program, e.g.
`mysqldump` so that the SQL can later be restored. Restic supports this mode of `mysqldump` so that the SQL can later be restored. Restic supports this mode of
operation, just supply the option `--stdin` to the `backup` command like this: operation, just supply the option `--stdin` to the `backup` command like this:
$ mysqldump [...] | restic -r /tmp/backup backup --stdin ```console
$ mysqldump [...] | restic -r /tmp/backup backup --stdin
```
This creates a new snapshot of the output of `mysqldump`. You can then use e.g. This creates a new snapshot of the output of `mysqldump`. You can then use e.g.
the fuse mounting option (see below) to mount the repository and read the file. the fuse mounting option (see below) to mount the repository and read the file.
@ -227,15 +253,19 @@ the fuse mounting option (see below) to mount the repository and read the file.
By default, the file name `stdin` is used, a different name can be specified By default, the file name `stdin` is used, a different name can be specified
with `--stdin-filename`, e.g. like this: with `--stdin-filename`, e.g. like this:
$ mysqldump [...] | restic -r /tmp/backup backup --stdin --stdin-filename production.sql ```console
$ mysqldump [...] | restic -r /tmp/backup backup --stdin --stdin-filename production.sql
```
## Tags ## Tags
Snapshots can have one or more tags, short strings which add identifying Snapshots can have one or more tags, short strings which add identifying
information. Just specify the tags for a snapshot with `--tag`: information. Just specify the tags for a snapshot with `--tag`:
$ restic -r /tmp/backup backup --tag projectX ~/shared/work/web ```console
[...] $ restic -r /tmp/backup backup --tag projectX ~/shared/work/web
[...]
```
The tags can later be used to keep (or forget) snapshots. The tags can later be used to keep (or forget) snapshots.
@ -243,52 +273,62 @@ The tags can later be used to keep (or forget) snapshots.
Now, you can list all the snapshots stored in the repository: Now, you can list all the snapshots stored in the repository:
$ restic -r /tmp/backup snapshots ```console
enter password for repository: $ restic -r /tmp/backup snapshots
ID Date Host Tags Directory enter password for repository:
---------------------------------------------------------------------- ID Date Host Tags Directory
40dc1520 2015-05-08 21:38:30 kasimir /home/user/work ----------------------------------------------------------------------
79766175 2015-05-08 21:40:19 kasimir /home/user/work 40dc1520 2015-05-08 21:38:30 kasimir /home/user/work
bdbd3439 2015-05-08 21:45:17 luigi /home/art 79766175 2015-05-08 21:40:19 kasimir /home/user/work
590c8fc8 2015-05-08 21:47:38 kazik /srv bdbd3439 2015-05-08 21:45:17 luigi /home/art
9f0bc19e 2015-05-08 21:46:11 luigi /srv 590c8fc8 2015-05-08 21:47:38 kazik /srv
9f0bc19e 2015-05-08 21:46:11 luigi /srv
```
You can filter the listing by directory path: You can filter the listing by directory path:
$ restic -r /tmp/backup snapshots --path="/srv" ```console
enter password for repository: $ restic -r /tmp/backup snapshots --path="/srv"
ID Date Host Tags Directory enter password for repository:
---------------------------------------------------------------------- ID Date Host Tags Directory
590c8fc8 2015-05-08 21:47:38 kazik /srv ----------------------------------------------------------------------
9f0bc19e 2015-05-08 21:46:11 luigi /srv 590c8fc8 2015-05-08 21:47:38 kazik /srv
9f0bc19e 2015-05-08 21:46:11 luigi /srv
```
Or filter by host: Or filter by host:
$ restic -r /tmp/backup snapshots --host luigi ```console
enter password for repository: $ restic -r /tmp/backup snapshots --host luigi
ID Date Host Tags Directory enter password for repository:
---------------------------------------------------------------------- ID Date Host Tags Directory
bdbd3439 2015-05-08 21:45:17 luigi /home/art ----------------------------------------------------------------------
9f0bc19e 2015-05-08 21:46:11 luigi /srv bdbd3439 2015-05-08 21:45:17 luigi /home/art
9f0bc19e 2015-05-08 21:46:11 luigi /srv
```
Combining filters is also possible. Combining filters is also possible.
# Restore a snapshot # Restore a snapshot
Restoring a snapshot is as easy as it sounds, just use the following command to Restoring a snapshot is as easy as it sounds, just use the following command to
restore the contents of the latest snapshot to `/tmp/restore-work`: restore the contents of the latest snapshot to `/tmp/restore-work`:
$ restic -r /tmp/backup restore 79766175 --target ~/tmp/restore-work ```console
enter password for repository: $ restic -r /tmp/backup restore 79766175 --target ~/tmp/restore-work
restoring <Snapshot of [/home/user/work] at 2015-05-08 21:40:19.884408621 +0200 CEST> to /tmp/restore-work enter password for repository:
restoring <Snapshot of [/home/user/work] at 2015-05-08 21:40:19.884408621 +0200 CEST> to /tmp/restore-work
```
Use the word `latest` to restore the last backup. You can also combine `latest` Use the word `latest` to restore the last backup. You can also combine `latest`
with the `--host` and `--path` filters to choose the last backup for a specific with the `--host` and `--path` filters to choose the last backup for a specific
host, path or both. host, path or both.
$ restic -r /tmp/backup restore latest --target ~/tmp/restore-work --path "/home/art" --host luigi ```console
enter password for repository: $ restic -r /tmp/backup restore latest --target ~/tmp/restore-work --path "/home/art" --host luigi
restoring <Snapshot of [/home/art] at 2015-05-08 21:45:17.884408621 +0200 CEST> to /tmp/restore-work enter password for repository:
restoring <Snapshot of [/home/art] at 2015-05-08 21:45:17.884408621 +0200 CEST> to /tmp/restore-work
```
# Manage repository keys # Manage repository keys
@ -297,24 +337,26 @@ The `key` command allows you to set multiple access keys or passwords per
repository. In fact, you can use the `list`, `add`, `remove` and `passwd` repository. In fact, you can use the `list`, `add`, `remove` and `passwd`
sub-commands to manage these keys very precisely: sub-commands to manage these keys very precisely:
$ restic -r /tmp/backup key list ```console
enter password for repository: $ restic -r /tmp/backup key list
ID User Host Created enter password for repository:
---------------------------------------------------------------------- ID User Host Created
*eb78040b username kasimir 2015-08-12 13:29:57 ----------------------------------------------------------------------
*eb78040b username kasimir 2015-08-12 13:29:57
$ restic -r /tmp/backup key add $ restic -r /tmp/backup key add
enter password for repository: enter password for repository:
enter password for new key: enter password for new key:
enter password again: enter password again:
saved new key as <Key of username@kasimir, created on 2015-08-12 13:35:05.316831933 +0200 CEST> saved new key as <Key of username@kasimir, created on 2015-08-12 13:35:05.316831933 +0200 CEST>
$ restic -r backup key list $ restic -r backup key list
enter password for repository: enter password for repository:
ID User Host Created ID User Host Created
---------------------------------------------------------------------- ----------------------------------------------------------------------
5c657874 username kasimir 2015-08-12 13:35:05 5c657874 username kasimir 2015-08-12 13:35:05
*eb78040b username kasimir 2015-08-12 13:29:57 *eb78040b username kasimir 2015-08-12 13:29:57
```
# Check integrity and consistency # Check integrity and consistency
@ -322,22 +364,28 @@ Imagine your repository is saved on a server that has a faulty hard drive, or
even worse, attackers get privileged access and modify your backup with the even worse, attackers get privileged access and modify your backup with the
intention to make you restore malicious data: intention to make you restore malicious data:
$ sudo echo "boom" >> backup/index/d795ffa99a8ab8f8e42cec1f814df4e48b8f49129360fb57613df93739faee97 ```console
$ sudo echo "boom" >> backup/index/d795ffa99a8ab8f8e42cec1f814df4e48b8f49129360fb57613df93739faee97
```
In order to detect these things, it is a good idea to regularly use the `check` In order to detect these things, it is a good idea to regularly use the `check`
command to test whether everything is alright, your precious backup data is command to test whether everything is alright, your precious backup data is
consistent and the integrity is unharmed: consistent and the integrity is unharmed:
$ restic -r /tmp/backup check ```console
Load indexes $ restic -r /tmp/backup check
ciphertext verification failed Load indexes
ciphertext verification failed
```
Trying to restore a snapshot which has been modified as shown above will yield Trying to restore a snapshot which has been modified as shown above will yield
the same error: the same error:
$ restic -r /tmp/backup restore 79766175 --target ~/tmp/restore-work ```console
Load indexes $ restic -r /tmp/backup restore 79766175 --target ~/tmp/restore-work
ciphertext verification failed Load indexes
ciphertext verification failed
```
# Mount a repository # Mount a repository
@ -345,11 +393,13 @@ Browsing your backup as a regular file system is also very easy. First, create
a mount point such as `/mnt/restic` and then use the following command to serve a mount point such as `/mnt/restic` and then use the following command to serve
the repository with FUSE: the repository with FUSE:
$ mkdir /mnt/restic ```console
$ restic -r /tmp/backup mount /mnt/restic $ mkdir /mnt/restic
enter password for repository: $ restic -r /tmp/backup mount /mnt/restic
Now serving /tmp/backup at /tmp/restic enter password for repository:
Don't forget to umount after quitting! Now serving /tmp/backup at /tmp/restic
Don't forget to umount after quitting!
```
Mounting repositories via FUSE is not possible on Windows and OpenBSD. Mounting repositories via FUSE is not possible on Windows and OpenBSD.
@ -363,12 +413,14 @@ credentials.
Once the server is configured, the setup of the SFTP repository can simply be Once the server is configured, the setup of the SFTP repository can simply be
achieved by changing the URL scheme in the `init` command: achieved by changing the URL scheme in the `init` command:
$ restic -r sftp:user@host:/tmp/backup init ```console
enter password for new backend: $ restic -r sftp:user@host:/tmp/backup init
enter password again: enter password for new backend:
created restic backend f1c6108821 at sftp:user@host:/tmp/backup enter password again:
Please note that knowledge of your password is required to access the repository. created restic backend f1c6108821 at sftp:user@host:/tmp/backup
Losing your password means that your data is irrecoverably lost. Please note that knowledge of your password is required to access the repository.
Losing your password means that your data is irrecoverably lost.
```
You can also specify a relative (read: no slash (`/`) character at the You can also specify a relative (read: no slash (`/`) character at the
beginning) directory, in this case the dir is relative to the remote user's beginning) directory, in this case the dir is relative to the remote user's
@ -378,17 +430,21 @@ home directory.
Restic can backup data to any Amazon S3 bucket. However, in this case, changing the URL scheme is not enough since Amazon uses special security credentials to sign HTTP requests. By consequence, you must first setup the following environment variables with the credentials you obtained while creating the bucket. Restic can backup data to any Amazon S3 bucket. However, in this case, changing the URL scheme is not enough since Amazon uses special security credentials to sign HTTP requests. By consequence, you must first setup the following environment variables with the credentials you obtained while creating the bucket.
$ export AWS_ACCESS_KEY_ID=<MY_ACCESS_KEY> ```console
$ export AWS_SECRET_ACCESS_KEY=<MY_SECRET_ACCESS_KEY> $ export AWS_ACCESS_KEY_ID=<MY_ACCESS_KEY>
$ export AWS_SECRET_ACCESS_KEY=<MY_SECRET_ACCESS_KEY>
```
You can then easily initialize a repository that uses your Amazon S3 as a backend. You can then easily initialize a repository that uses your Amazon S3 as a backend.
$ restic -r s3:eu-central-1/bucket_name init ```console
enter password for new backend: $ restic -r s3:eu-central-1/bucket_name init
enter password again: enter password for new backend:
created restic backend eefee03bbd at s3:eu-central-1/bucket_name enter password again:
Please note that knowledge of your password is required to access the repository. created restic backend eefee03bbd at s3:eu-central-1/bucket_name
Losing your password means that your data is irrecoverably lost. Please note that knowledge of your password is required to access the repository.
Losing your password means that your data is irrecoverably lost.
```
Fro an s3-compatible server that is not Amazon (like Minio, see below), or is Fro an s3-compatible server that is not Amazon (like Minio, see below), or is
only available via HTTP, you can specify the URL to the server like this: only available via HTTP, you can specify the URL to the server like this:
@ -400,22 +456,26 @@ only available via HTTP, you can specify the URL to the server like this:
### Pre-Requisites ### Pre-Requisites
* Download and Install [Minio Server](https://minio.io/download/). * Download and Install [Minio Server](https://minio.io/download/).
* You can also refer to [https://docs.minio.io](https://docs.minio.io) for step by step guidance on installation and getting started on Minio CLient and Minio Server. * You can also refer to [https://docs.minio.io](https://docs.minio.io) for step by step guidance on installation and getting started on Minio CLient and Minio Server.
You must first setup the following environment variables with the credentials of your running Minio Server. You must first setup the following environment variables with the credentials of your running Minio Server.
$ export AWS_ACCESS_KEY_ID=<YOUR-MINIO-ACCESS-KEY-ID> ```console
$ export AWS_SECRET_ACCESS_KEY= <YOUR-MINIO-SECRET-ACCESS-KEY> $ export AWS_ACCESS_KEY_ID=<YOUR-MINIO-ACCESS-KEY-ID>
$ export AWS_SECRET_ACCESS_KEY= <YOUR-MINIO-SECRET-ACCESS-KEY>
```
Now you can easily initialize restic to use Minio server as backend with this command. Now you can easily initialize restic to use Minio server as backend with this command.
$ ./restic -r s3:http://localhost:9000/restic init ```console
enter password for new backend: $ ./restic -r s3:http://localhost:9000/restic init
enter password again: enter password for new backend:
created restic backend 6ad29560f5 at s3:http://localhost:9000/restic1 enter password again:
Please note that knowledge of your password is required to access created restic backend 6ad29560f5 at s3:http://localhost:9000/restic1
the repository. Losing your password means that your data is irrecoverably lost. Please note that knowledge of your password is required to access
the repository. Losing your password means that your data is irrecoverably lost.
```
# Removing old snapshots # Removing old snapshots
@ -430,54 +490,62 @@ the repository.
The command `snapshots` can be used to list all snapshots in a repository like this: The command `snapshots` can be used to list all snapshots in a repository like this:
$ restic -r /tmp/backup snapshots ```console
enter password for repository: $ restic -r /tmp/backup snapshots
ID Date Host Tags Directory enter password for repository:
---------------------------------------------------------------------- ID Date Host Tags Directory
40dc1520 2015-05-08 21:38:30 kasimir /home/user/work ----------------------------------------------------------------------
79766175 2015-05-08 21:40:19 kasimir /home/user/work 40dc1520 2015-05-08 21:38:30 kasimir /home/user/work
bdbd3439 2015-05-08 21:45:17 luigi /home/art 79766175 2015-05-08 21:40:19 kasimir /home/user/work
590c8fc8 2015-05-08 21:47:38 kazik /srv bdbd3439 2015-05-08 21:45:17 luigi /home/art
9f0bc19e 2015-05-08 21:46:11 luigi /srv 590c8fc8 2015-05-08 21:47:38 kazik /srv
9f0bc19e 2015-05-08 21:46:11 luigi /srv
```
In order to remove the snapshot of `/home/art`, use the `forget` command and In order to remove the snapshot of `/home/art`, use the `forget` command and
specify the snapshot ID on the command line: specify the snapshot ID on the command line:
$ restic -r /tmp/backup forget bdbd3439 ```console
enter password for repository: $ restic -r /tmp/backup forget bdbd3439
removed snapshot d3f01f63 enter password for repository:
removed snapshot d3f01f63
```
Afterwards this snapshot is removed: Afterwards this snapshot is removed:
$ restic -r /tmp/backup snapshots ```console
enter password for repository: $ restic -r /tmp/backup snapshots
ID Date Host Tags Directory enter password for repository:
---------------------------------------------------------------------- ID Date Host Tags Directory
40dc1520 2015-05-08 21:38:30 kasimir /home/user/work ----------------------------------------------------------------------
79766175 2015-05-08 21:40:19 kasimir /home/user/work 40dc1520 2015-05-08 21:38:30 kasimir /home/user/work
590c8fc8 2015-05-08 21:47:38 kazik /srv 79766175 2015-05-08 21:40:19 kasimir /home/user/work
9f0bc19e 2015-05-08 21:46:11 luigi /srv 590c8fc8 2015-05-08 21:47:38 kazik /srv
9f0bc19e 2015-05-08 21:46:11 luigi /srv
```
But the data that was referenced by files in this snapshot is still stored in But the data that was referenced by files in this snapshot is still stored in
the repository. To cleanup unreferenced data, the `prune` command must be run: the repository. To cleanup unreferenced data, the `prune` command must be run:
$ restic -r /tmp/backup prune ```console
enter password for repository: $ restic -r /tmp/backup prune
enter password for repository:
counting files in repo counting files in repo
building new index for repo building new index for repo
[0:00] 100.00% 22 / 22 files [0:00] 100.00% 22 / 22 files
repository contains 22 packs (8512 blobs) with 100.092 MiB bytes repository contains 22 packs (8512 blobs) with 100.092 MiB bytes
processed 8512 blobs: 0 duplicate blobs, 0B duplicate processed 8512 blobs: 0 duplicate blobs, 0B duplicate
load all snapshots load all snapshots
find data that is still in use for 1 snapshots find data that is still in use for 1 snapshots
[0:00] 100.00% 1 / 1 snapshots [0:00] 100.00% 1 / 1 snapshots
found 8433 of 8512 data blobs still in use found 8433 of 8512 data blobs still in use
will rewrite 3 packs will rewrite 3 packs
creating new index creating new index
[0:00] 86.36% 19 / 22 files [0:00] 86.36% 19 / 22 files
saved new index as 544a5084 saved new index as 544a5084
done done
```
Afterwards the repository is smaller. Afterwards the repository is smaller.
@ -530,12 +598,16 @@ all snapshots!
The program can be built with debug support like this: The program can be built with debug support like this:
$ go run build.go -tags debug ```console
$ go run build.go -tags debug
```
Afterwards, extensive debug messages are written to the file in environment Afterwards, extensive debug messages are written to the file in environment
variable `DEBUG_LOG`, e.g.: variable `DEBUG_LOG`, e.g.:
$ DEBUG_LOG=/tmp/restic-debug.log restic backup ~/work ```console
$ DEBUG_LOG=/tmp/restic-debug.log restic backup ~/work
```
If you suspect that there is a bug, you can have a look at the debug log. If you suspect that there is a bug, you can have a look at the debug log.
Please be aware that the debug log might contain sensitive information such as Please be aware that the debug log might contain sensitive information such as
@ -551,23 +623,29 @@ separated by commas. Patterns are case sensitive.
Printing all log messages to the console can be achieved by setting the file Printing all log messages to the console can be achieved by setting the file
filter to `*`: filter to `*`:
$ DEBUG_FILES=* restic check ```console
$ DEBUG_FILES=* restic check
```
If you want restic to just print all debug log messages from the files If you want restic to just print all debug log messages from the files
`main.go` and `lock.go`, set the environment variable `DEBUG_FILES` like this: `main.go` and `lock.go`, set the environment variable `DEBUG_FILES` like this:
$ DEBUG_FILES=main.go,lock.go restic check ```console
$ DEBUG_FILES=main.go,lock.go restic check
```
The following command line instructs restic to only print debug statements The following command line instructs restic to only print debug statements
originating in functions that match the pattern `*unlock*` (case sensitive): originating in functions that match the pattern `*unlock*` (case sensitive):
$ DEBUG_FUNCS=*unlock* restic check ```console
$ DEBUG_FUNCS=*unlock* restic check
```
# Under the hood: Browse repository objects # Under the hood: Browse repository objects
Internally, a repository stores data of several different types described in the [design documentation](https://github.com/restic/restic/blob/master/doc/Design.md). You can `list` objects such as blobs, packs, index, snapshots, keys or locks with the following command: Internally, a repository stores data of several different types described in the [design documentation](https://github.com/restic/restic/blob/master/doc/Design.md). You can `list` objects such as blobs, packs, index, snapshots, keys or locks with the following command:
```shell ```console
$ restic -r /tmp/backup list snapshots $ restic -r /tmp/backup list snapshots
d369ccc7d126594950bf74f0a348d5d98d9e99f3215082eb69bf02dc9b3e464c d369ccc7d126594950bf74f0a348d5d98d9e99f3215082eb69bf02dc9b3e464c
``` ```
@ -575,26 +653,30 @@ d369ccc7d126594950bf74f0a348d5d98d9e99f3215082eb69bf02dc9b3e464c
The `find` command searches for a given The `find` command searches for a given
[pattern](http://golang.org/pkg/path/filepath/#Match) in the repository. [pattern](http://golang.org/pkg/path/filepath/#Match) in the repository.
$ restic -r backup find test.txt ```console
debug log file restic.log $ restic -r backup find test.txt
debug enabled debug log file restic.log
enter password for repository: debug enabled
found 1 matching entries in snapshot 196bc5760c909a7681647949e80e5448e276521489558525680acf1bd428af36 enter password for repository:
-rw-r--r-- 501 20 5 2015-08-26 14:09:57 +0200 CEST path/to/test.txt found 1 matching entries in snapshot 196bc5760c909a7681647949e80e5448e276521489558525680acf1bd428af36
-rw-r--r-- 501 20 5 2015-08-26 14:09:57 +0200 CEST path/to/test.txt
```
The `cat` command allows you to display the JSON representation of the objects The `cat` command allows you to display the JSON representation of the objects
or its raw content. or its raw content.
$ restic -r /tmp/backup cat snapshot d369ccc7d126594950bf74f0a348d5d98d9e99f3215082eb69bf02dc9b3e464c ```console
enter password for repository: $ restic -r /tmp/backup cat snapshot d369ccc7d126594950bf74f0a348d5d98d9e99f3215082eb69bf02dc9b3e464c
{ enter password for repository:
"time": "2015-08-12T12:52:44.091448856+02:00", {
"tree": "05cec17e8d3349f402576d02576a2971fc0d9f9776ce2f441c7010849c4ff5af", "time": "2015-08-12T12:52:44.091448856+02:00",
"paths": [ "tree": "05cec17e8d3349f402576d02576a2971fc0d9f9776ce2f441c7010849c4ff5af",
"/home/user/work" "paths": [
], "/home/user/work"
"hostname": "kasimir", ],
"username": "username", "hostname": "kasimir",
"uid": 501, "username": "username",
"gid": 20 "uid": 501,
} "gid": 20
}
```

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10
doc/index.md
View File

@ -20,10 +20,12 @@ this page, where you can select the version.
The restic documentation is built with [MkDocs](http://www.mkdocs.org). After The restic documentation is built with [MkDocs](http://www.mkdocs.org). After
installing it, you can edit and view the documentation locally by running: installing it, you can edit and view the documentation locally by running:
$ mkdocs serve ```console
INFO - Building documentation... $ mkdocs serve
INFO - Cleaning site directory INFO - Building documentation...
[I 160221 12:33:57 server:271] Serving on http://127.0.0.1:8000 INFO - Cleaning site directory
[I 160221 12:33:57 server:271] Serving on http://127.0.0.1:8000
```
Afterwards visit the URL with a browser. Afterwards visit the URL with a browser.

4
mkdocs.yml
View File

@ -1,5 +1,9 @@
site_name: Documentation for restic site_name: Documentation for restic
theme: readthedocs theme: readthedocs
markdown_extensions:
- codehilite:
extra_css:
- code.css
docs_dir: doc docs_dir: doc
pages: pages:
- Getting Started: index.md - Getting Started: index.md