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This change should make it easier for users to make complete backups of wallets because they can now just back up the specified `-wallet=<path>` path directly, instead of having to back up the specified path as well as the transaction log directory (for incompletely flushed wallets). Another advantage of this change is that if two wallets are located in the same directory, they will now use their own BerkeleyDB environments instead using a shared environment. Using a shared environment makes it difficult to manage and back up wallets separately because transaction log files will contain a mix of data from all wallets in the environment.
103 lines
3.7 KiB
Markdown
103 lines
3.7 KiB
Markdown
(note: this is a temporary file, to be added-to by anybody, and moved to
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release-notes at release time)
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Bitcoin Core version *version* is now available from:
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<https://bitcoincore.org/bin/bitcoin-core-*version*/>
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This is a new major version release, including new features, various bugfixes
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and performance improvements, as well as updated translations.
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Please report bugs using the issue tracker at GitHub:
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<https://github.com/bitcoin/bitcoin/issues>
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To receive security and update notifications, please subscribe to:
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<https://bitcoincore.org/en/list/announcements/join/>
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How to Upgrade
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==============
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If you are running an older version, shut it down. Wait until it has completely
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shut down (which might take a few minutes for older versions), then run the
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installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on Mac)
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or `bitcoind`/`bitcoin-qt` (on Linux).
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The first time you run version 0.15.0, your chainstate database will be converted to a
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new format, which will take anywhere from a few minutes to half an hour,
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depending on the speed of your machine.
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Note that the block database format also changed in version 0.8.0 and there is no
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automatic upgrade code from before version 0.8 to version 0.15.0. Upgrading
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directly from 0.7.x and earlier without redownloading the blockchain is not supported.
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However, as usual, old wallet versions are still supported.
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Downgrading warning
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-------------------
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The chainstate database for this release is not compatible with previous
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releases, so if you run 0.15 and then decide to switch back to any
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older version, you will need to run the old release with the `-reindex-chainstate`
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option to rebuild the chainstate data structures in the old format.
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If your node has pruning enabled, this will entail re-downloading and
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processing the entire blockchain.
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Compatibility
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==============
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Bitcoin Core is extensively tested on multiple operating systems using
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the Linux kernel, macOS 10.8+, and Windows 7 and newer (Windows XP is not supported).
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Bitcoin Core should also work on most other Unix-like systems but is not
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frequently tested on them.
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Notable changes
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===============
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RPC changes
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------------
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### Low-level changes
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- The `fundrawtransaction` rpc will reject the previously deprecated `reserveChangeKey` option.
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External wallet files
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---------------------
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The `-wallet=<path>` option now accepts full paths instead of requiring wallets
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to be located in the -walletdir directory.
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Newly created wallet format
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---------------------------
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If `-wallet=<path>` is specified with a path that does not exist, it will now
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create a wallet directory at the specified location (containing a wallet.dat
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data file, a db.log file, and database/log.?????????? files) instead of just
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creating a data file at the path and storing log files in the parent
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directory. This should make backing up wallets more straightforward than
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before because the specified wallet path can just be directly archived without
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having to look in the parent directory for transaction log files.
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For backwards compatibility, wallet paths that are names of existing data files
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in the `-walletdir` directory will continue to be accepted and interpreted the
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same as before.
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Low-level RPC changes
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---------------------
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- When bitcoin is not started with any `-wallet=<path>` options, the name of
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the default wallet returned by `getwalletinfo` and `listwallets` RPCs is
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now the empty string `""` instead of `"wallet.dat"`. If bitcoin is started
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with any `-wallet=<path>` options, there is no change in behavior, and the
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name of any wallet is just its `<path>` string.
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Credits
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=======
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Thanks to everyone who directly contributed to this release:
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As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).
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