diff options
Diffstat (limited to 'share/man/man5/fusefs.5')
| -rw-r--r-- | share/man/man5/fusefs.5 | 53 |
1 files changed, 22 insertions, 31 deletions
diff --git a/share/man/man5/fusefs.5 b/share/man/man5/fusefs.5 index 33f59fb4f185..24858b2ac4e7 100644 --- a/share/man/man5/fusefs.5 +++ b/share/man/man5/fusefs.5 @@ -3,8 +3,8 @@ .\" .\" Copyright (c) 2019 The FreeBSD Foundation .\" -.\" This software was developed by BFF Storage Systems, LLC under sponsorship -.\" from the FreeBSD Foundation. +.\" This documentation was written by BFF Storage Systems, LLC under +.\" sponsorship from the FreeBSD Foundation. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions @@ -28,7 +28,7 @@ .\" SUCH DAMAGE. .\" .\" $FreeBSD$ -.Dd April 13, 2019 +.Dd July 31, 2019 .Dt FUSEFS 5 .Os .Sh NAME @@ -60,11 +60,9 @@ Finally, the API is portable. Many daemons can run on multiple operating systems with minimal modifications. .Sh SYSCTL VARIABLES -The following variables are available as both +The following .Xr sysctl 8 -variables and -.Xr loader 8 -tunables: +variables are available: .Bl -tag -width indent .It Va vfs.fusefs.kernelabi_major Major version of the FUSE kernel ABI supported by this driver. @@ -73,7 +71,7 @@ Minor version of the FUSE kernel ABI supported by this driver. .It Va vfs.fusefs.data_cache_mode Controls how .Nm -will cache file data. +will cache file data for pre-7.23 file systems. A value of 0 will disable caching entirely. Every data access will be forwarded to the daemon. A value of 1 will select write-through caching. @@ -84,33 +82,26 @@ Reads and writes will both be cached, and writes will occasionally be flushed to the daemon by the page daemon. Write-back caching is usually unsafe, especially for FUSE file systems that require network access. -.It Va vfs.fusefs.lookup_cache_enable -Controls whether -.Nm -will cache lookup responses from the file system. -FUSE file systems indicate whether lookup responses should be cacheable, but -it may be useful to globally disable caching them if a file system is -misbehaving. +.Pp +FUSE file systems using protocol 7.23 or later specify their cache behavior +on a per-mountpoint basis, ignoring this sysctl. +.It Va vfs.fusefs.stats.filehandle_count +Current number of open FUSE file handles. +.It Va vfs.fusefs.stats.lookup_cache_hits +Total number of lookup cache hits. +.It Va vfs.fusefs.stats.lookup_cache_misses +Total number of lookup cache misses. +.It Va vfs.fusefs.stats.node_count +Current number of allocated FUSE vnodes. +.It Va vfs.fusefs.stats.ticket_count +Current number of allocated FUSE tickets, which is roughly equal to the number +of FUSE operations currently being processed by daemons. .\" Undocumented sysctls .\" ==================== -.\" Counters: I intend to rename to vfs.fusefs.stats.* for clarity -.\" vfs.fusefs.lookup_cache_{hits, misses} -.\" vfs.fusefs.filehandle_count -.\" vfs.fusefs.ticker_count -.\" vfs.fusefs.node_count -.\" -.\" vfs.fusefs.version - useless since the driver moved in-tree -.\" vfs.fusefs.reclaim_revoked: I don't understand it well-enough -.\" vfs.fusefs.sync_unmount: dead code .\" vfs.fusefs.enforce_dev_perms: I don't understand it well enough. -.\" vfs.fusefs.init_backgrounded: dead code .\" vfs.fusefs.iov_credit: I don't understand it well enough .\" vfs.fusefs.iov_permanent_bufsize: I don't understand it well enough -.\" vfs.fusefs.fix_broken_io: I don't understand it well enough -.\" vfs.fusefs.sync_resize: useless and should be removed -.\" vfs.fusefs.refresh_size: probably useless? -.\" vfs.fusefs.mmap_enable: why is this optional? -.\" vfs.fusefs.data_cache_invalidate: what is this needed for? +.El .Sh SEE ALSO .Xr mount_fusefs 8 .Sh HISTORY @@ -119,7 +110,7 @@ The driver was written as the part of the .Fx implementation of the FUSE userspace file system framework (see -.Xr https://github.com/libfuse/libfuse ) +.Lk https://github.com/libfuse/libfuse ) and first appeared in the .Pa sysutils/fusefs-kmod port, supporting |