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Chris LuandGitHub
735e94f6ba
* mount: expose `-fuse.maxBackground` flag (closes #9258) The Linux FUSE driver caps in-flight async requests via `/sys/fs/fuse/connections/<id>/max_background` (and a derived `congestion_threshold = 3/4 * max_background`). Heavy upload workloads need this raised, but the cap currently lives only in `/sys`, so it resets on reboot/remount. `weed mount` was hardcoding `MaxBackground: 128`. Promote it to a flag, default unchanged. Setting `-fuse.maxBackground=2048` reproduces the manual `echo 2048 > .../max_background` (and gives 1536 for congestion_threshold automatically) persistently across remounts. `congestion_threshold` is not exposed as a separate flag because go-fuse derives it as 3/4 of MaxBackground in InitOut and offers no hook to override; users wanting a different ratio can still write /sys/fs/fuse/connections/<id>/congestion_threshold post-mount. * mount: add `-fuse.congestionThreshold` flag, bump go-fuse to v2.9.3 go-fuse v2.9.3 exposes CongestionThreshold as a separate MountOption, so we can now let users override the kernel's default 3/4-of-max_background ratio at mount time instead of having to write /sys/fs/fuse/connections/<id>/congestion_threshold post-mount on every remount/reboot. Default 0 preserves existing behavior (kernel derives it as 3/4 * max_background). Non-zero is sent to the kernel verbatim; the kernel clamps it to max_background if higher.