mirror of
https://github.com/pgbackrest/pgbackrest.git
synced 2024-12-12 10:04:14 +02:00
c30d3e439b
Bug Fixes: * Remove the distinction between maps where super block size is equal to block size and maps where they are not. In practice, maps with equal blocks are now rare and most of the optimizations can be applied directly to super blocks where the blocks are equal. This fixes a bug where a map that was created with equal size blocks and then converted to differing block sizes would generate an invalid map. * Free reads during restore to avoid running out of file handles. Improvements: * Store super block sizes in the block map. This allows the final block size to be removed from the block list and provides a more optimal restore and better potential for analysis. * Always round the super block size up to the next block size. This makes the number of blocks per super block more predictable. * Allow super block sizes to be changed at will in the map. The first case for this is to store the reduced super block size required when the last super block is short but it could be used to dynamically change the super block size to optimize compression. * Store a block count rather than a list of blocks in a super block. Blocks must always be sequential, though there may be an offset to the first block in a super block. This saves 11-14% on space for checksum sizes 6-7. * In the case that all the blocks for a super block are present, and there is no offset, the block size is omitted. |
||
|---|---|---|
| .. | ||
| auto | ||
| dtd | ||
| coding.xml | ||
| contributing.xml | ||
| documentation.xml | ||
| faq.xml | ||
| index.xml | ||
| metric.xml | ||
| release.xml | ||
| user-guide-index.xml | ||
| user-guide.xml | ||