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Support for building RocksDB plugins and custom file systems#1160
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Summary:
Add support for specifying custom RocksDB file system implementations
through the parameter rocksdb_fs_uri.
Examples:
rocksdb_fs_uri=zenfs://dev:nvme0n1
rocksdb_fs_uri=posix://
Custom file systems may be built as plugins in rocksdb and can be
created through a factory function that will be looked up by the
object registry. The posix file system is built in.
Author
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@yizhang82 : could you have a look at this? Andrew Kryczka mentioned that you have been part of the plugin discussions. |
Summary: RocksDB supports external plugin projects in plugins/ enabling e.g. custom file system implementations. Add support for building RocksDB plugins by including the plugins listed in ROCKSDB_PLUGINS into the cmake build.
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Pushed a small update, aligning with the rocksdb makefile build: allowing plugin makefile to be called anything, as long as it has the extension .mk |
ajkr
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Mar 22, 2021
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LGTM. @yizhang82 - this should work with RocksDB 6.18.0 and later
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RocksDB now supports building plugins from external repos (facebook/rocksdb#7918) and this pull request adds the needed cmake magic to include these in myrocks builds. The plugins to include are specified by ROCKSDB_PLUGINS:
Note: as this branch is not yet including the above pull request, the plugin directory does not exist, but can be created manually and the above example will work.
A configuration parameter, rocksdb_fs_uri is also added to allow the user to specify custom file systems.
These two changes allows external file systems to be included and used in myrocks. I've tested using dedupfs and a custom filesystem that i've developed for zoned block devices: zenfs.