Arvados

h1. FUSE v2

@arv-mount@ (source:services/fuse) is our Python-based fuse mount that has been used in production for years.

@arvados-client mount@ (source:lib/mount), aka "fuse v2", is our Go-based fuse mount that is currently flagged "experimental" and is missing some of arv-mount's features. Nearly all of the v2 functionality is provided by the same "filesystem" code used in production by keep-web to provide WebDAV and S3 services.

Ultimately we aim to retire @arv-mount@ and provide @arvados-client mount@ as a faster, more reliable drop-in replacement.

For some use cases, v2 will be usable before reaching full feature parity.

|\2. *Before supporting/recommending READ-ONLY production use*|

|✅|Manual stress tests|

||Automated stress tests|

||Listen to websocket and sync remote changes|

||Ensure memory footprint of a long-running mount doesn't expand indefinitely|

||Ensure inodes don't change in a way that confuses kernel (see #12870)|

|\2. *Before supporting/recommending READ/WRITE production use*|

||Sync local changes automatically (on timer?) even if fsync is not called|

|\2. *Before replacing arv-mount in crunch-run use case*|

||Option to mount temp collections at specified paths|

||Option to mount by_id and by_pdh magic dirs at specified paths|

||Option to specify cache directory and max size|

||Option to specify storage classes for writes|

||Option to write crunchstat metrics at specified interval|

|\2. *Before replacing arv-mount entirely*|

||Accept project/collection/tag filters on command line|