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design: Remove cloud layout

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Alexander Neumann 2017-05-15 21:51:19 +02:00
parent 22a6cd3a26
commit a4e3a0dd97
1 changed files with 14 additions and 39 deletions
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doc/design.rst
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@ -76,8 +76,8 @@ identifies the repository, regardless if it is accessed via SFTP or
locally. The field ``chunker_polynomial`` contains a parameter that is
used for splitting large files into smaller chunks (see below).
Filesystem-Based Repositories
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Repository Layout
~~~~~~~~~~~~~~~~~
The ``local`` and ``sftp`` backends are implemented using files and
directories stored in a file system. The directory layout is the same
@ -117,44 +117,19 @@ e.g.:
$ restic -r /tmp/restic-repo init
The local and sftp backends will also accept the repository layout
described in the following section, so that remote repositories mounted
locally e.g. via fuse can be accessed. The layout auto-detection can be
overridden by specifying the option ``-o local.layout=default``, valid
values are ``default``, ``cloud`` and ``s3``. The option for the sftp
backend is named ``sftp.layout``.
The local and sftp backends will auto-detect and accept all layouts described
in the following sections, so that remote repositories mounted locally e.g. via
fuse can be accessed. The layout auto-detection can be overridden by specifying
the option ``-o local.layout=default``, valid values are ``default`` and
``s3legacy``. The option for the sftp backend is named ``sftp.layout``.
Object-Storage-Based Repositories
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
S3 Legacy Layout
~~~~~~~~~~~~~~~~
Repositories in a backend based on an object store (e.g. Amazon s3) have
the same basic layout, with the exception that all data pack files are
directly saved in the ``data`` path, without the sub-directories listed
for the filesystem-based backends as listed in the previous section. The
layout looks like this:
::
/config
/data
├── 2159dd48f8a24f33c307b750592773f8b71ff8d11452132a7b2e2a6a01611be1
├── 32ea976bc30771cebad8285cd99120ac8786f9ffd42141d452458089985043a5
├── 59fe4bcde59bd6222eba87795e35a90d82cd2f138a27b6835032b7b58173a426
├── 73d04e6125cf3c28a299cc2f3cca3b78ceac396e4fcf9575e34536b26782413c
[...]
/index
├── c38f5fb68307c6a3e3aa945d556e325dc38f5fb68307c6a3e3aa945d556e325d
└── ca171b1b7394d90d330b265d90f506f9984043b342525f019788f97e745c71fd
/keys
└── b02de829beeb3c01a63e6b25cbd421a98fef144f03b9a02e46eff9e2ca3f0bd7
/locks
/snapshots
└── 22a5af1bdc6e616f8a29579458c49627e01b32210d09adb288d1ecda7c5711ec
Unfortunately during development the s3 backend uses slightly different
Unfortunately during development the AWS S3 backend uses slightly different
paths (directory names use singular instead of plural for ``key``,
``lock``, and ``snapshot`` files), for s3 the repository layout looks
like this:
``lock``, and ``snapshot`` files), and the data files are stored directly below
the ``data`` directory. The S3 Legacy repository layout looks like this:
::
@ -174,8 +149,8 @@ like this:
/snapshot
└── 22a5af1bdc6e616f8a29579458c49627e01b32210d09adb288d1ecda7c5711ec
The s3 backend understands and accepts both forms, new backends are
always created with the former layout for compatibility reasons.
The S3 backend understands and accepts both forms, new backends are
always created with the default layout for compatibility reasons.
Pack Format
-----------