GitHub user JensRantil opened a pull request:
https://github.com/apache/couchdb/pull/124
Expose free disk space for databases and indexes
Three use cases:
* To easily hook up monitoring tools to a database.
* To enable triggering compaction using an external source based on disk
usage.
* To make it make it easier for automatic replication/sharding
orchestration mechanisms to make good decisions on how to balance/move data.
The last of these use cases was what triggered me into coming up with this
pull request.
Counter arguments against this pull request (that I can come up with):
* Security: One might not want to expose the available disk space to the
internet. Do you think I should make this information hidable using an option?
* Dependence on a(nother?) system call when checking status of databases
and/or indexes.
* This information can be extracted using mechanisms outside of CouchDB,
such as `ssh machine df -h`.
I'd love to hear your input.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/JensRantil/couchdb expose-free-space
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/couchdb/pull/124.patch
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commit d842b7a8eb072df890aa63a91fe846cf60f77ed5
Author: Jens Rantil <[email protected]>
Date: 2013-12-27T22:04:59Z
Moving `free_space` to `couch_util` module
This is a preparatory commit to expose free disk space where databases
and views resides.
commit 1c1eb40856fa0d06348bfd2ec53d4c37b232566a
Author: Jens Rantil <[email protected]>
Date: 2013-12-27T22:24:01Z
Expose disk free for a database
The availability is exposed through `/{db}`.
commit 9f5c78a63d41d35e746d54b1774662cdd8f277e9
Author: Jens Rantil <[email protected]>
Date: 2013-12-27T22:30:58Z
Expose disk free for database indexes
This is done through `/{db}/_design/{ddoc}/_info`.
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