Change timestamp directories to use subdirectories.#110
Merged
jrick merged 1 commit intodecred:masterfrom Sep 15, 2025
Merged
Conversation
A directory to store a new leveldb database is created for each anchor, which occurs hourly. These directories were all rooted under the same directory. Eventually, this resulted in hitting the upper filesystem limit on the number of files or directories that can be contained within a single directory, causing dcrtimed to stop producing new anchors. To fix this, we switch the directory format, itself a timestamp, from yyyymmdd.HHMMSS to yyyy-mm/dd/HHMMSS. A filesystem.Walk call is now used instead of os.ReadDir to read or iterate through the timestamp directories. This requires a manual database migration. The dcrtime_dumpdb tool (built before this commit) can be used to dump the existing database to a JSON file, and dcrtime_dumpdb (built at this commit) to restore the data.
dajohi
approved these changes
Sep 15, 2025
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
A directory to store a new leveldb database is created for each anchor, which occurs hourly. These directories were all rooted under the same directory. Eventually, this resulted in hitting the upper filesystem limit on the number of files or directories that can be contained within a single directory, causing dcrtimed to stop producing new anchors.
To fix this, we switch the directory format, itself a timestamp, from yyyymmdd.HHMMSS to yyyy-mm/dd/HHMMSS. A filesystem.Walk call is now used instead of os.ReadDir to read or iterate through the timestamp directories.
This requires a manual database migration. The dcrtime_dumpdb tool (built before this commit) can be used to dump the existing database to a JSON file, and dcrtime_dumpdb (built at this commit) to restore the data.