Merge pull request #7345

fa8c497 [doc] backwards-compatibility issues due to chainstate obfuscation (MarcoFalke)
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Wladimir J. van der Laan 2016-01-18 10:39:06 +01:00
commit d04525a065
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@ -22,6 +22,8 @@ bitcoind/bitcoin-qt (on Linux).
Downgrade warning
------------------
### Downgrade to a version < 0.10.0
Because release 0.10.0 and later makes use of headers-first synchronization and
parallel block download (see further), the block files and databases are not
backwards-compatible with pre-0.10 versions of Bitcoin Core or other software:
@ -40,8 +42,17 @@ bootstrap.dat) anew afterwards. It is possible that the data from a completely
synchronised 0.10 node may be usable in older versions as-is, but this is not
supported and may break as soon as the older version attempts to reindex.
This does not affect wallet forward or backward compatibility. There are no
known problems when downgrading from 0.12.x to a version >= 0.10.0.
This does not affect wallet forward or backward compatibility.
### Downgrade to a version < 0.12.0
Because release 0.12.0 and later will obfuscate the chainstate on every
fresh sync or reindex, the chainstate is not backwards-compatible with
pre-0.12 versions of Bitcoin Core or other software.
If you want to downgrade after you have done a reindex with 0.12.0 or later,
you will need to reindex when you first start Bitcoin Core version 0.11 or
earlier.
Notable changes
===============