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| -rw-r--r-- | doc/release-notes.md | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/doc/release-notes.md b/doc/release-notes.md index 967a39a0e7..de13daf3e4 100644 --- a/doc/release-notes.md +++ b/doc/release-notes.md @@ -1,6 +1,27 @@ (note: this is a temporary file, to be added-to by anybody, and moved to release-notes at release time) +Block file backwards-compatibility warning +=========================================== + +Because release 0.10.0 makes use of headers-first synchronization and parallel +block download, the block files and databases are not backwards-compatible +with older versions of Bitcoin Core: + +* Blocks will be stored on disk out of order (in the order they are +received, really), which makes it incompatible with some tools or +other programs. Reindexing using earlier versions will also not work +anymore as a result of this. + +* The block index database will now hold headers for which no block is +stored on disk, which earlier versions won't support. + +If you want to be able to downgrade smoothly, make a backup of your entire data +directory. Without this your node will need start syncing (or importing from +bootstrap.dat) anew afterwards. + +This does not affect wallet forward or backward compatibility. + Transaction fee changes ======================= |