1004528 - Keep track of storage usage with sccache

Status: RESOLVED FIXED

(Firefox Build System :: General, defect)

Description

[Mike Hommey [:glandium]]

The local storage support added in bug 1000718 is dumb, and only adds data to a local directory, and never purges it when that's needed.

Comment 1

[Armen [:armenzg]]

'local storage' of the build system? or of Firefox?
What are we trying to accomplish on this bug? What are the advantages of fixing this?

Comment 2

[Gregory Szorc [:gps]]

The cache on a local machine. We need to keep track of the size so it doesn't increase to infinity.

(sccache is effectively a replacement for ccache that also supports using remote storage, namely S3)

Comment 3

[(not currently active) Ted Mielczarek]

This bug proposes implementing functionality equivalent to ccache's --max-size:
https://ccache.samba.org/manual.html#_cache_size_management

Comment 4

[(not currently active) Ted Mielczarek]

I fixed this here:
https://github.com/mozilla/sccache/commit/030ed02ab4de07e4e8666258fa3ddbaa2b7986bd

It could stand a little more improvement, currently the disk cache size defaults to 10GB but can be controlled by an environment variable. We should store the max size in the directory so it can be set and persists, and also offer a way to set it.