1GANESHA-CACHE-CONFIG(8) NFS-Ganesha GANESHA-CACHE-CONFIG(8)
2
6 ganesha-cache-config - NFS Ganesha Cache Configuration File
7
9 /etc/ganesha/ganesha.conf
10
13 NFS-Ganesha reads the configuration data from: | /etc/ganesha/gane‐
14 sha.conf
15 This file lists NFS-Ganesha Cache config options. These options used
17 to be configured in the CACHEINODE block. They may still be used in
18 that block, but it is deprecated and will go away. The MDCACHE block
19 takes precedence over the CACHEINODE block.
20 MDCACHE {}
22 NParts (uint32, range 1 to 32633, default 7)
23 Partitions in the Cache_Inode tree.
24 Cache_Size(uint32, range 1 to UINT32_MAX, default 32633)
26 Per-partition hash table size.
27 Use_Getattr_Directory_Invalidation(bool, default false)
29 Use getattr for directory invalidation.
30 Dir_Chunk(uint32, range 0 to UINT32_MAX, default 128)
32 Size of per-directory dirent cache chunks, 0 means directory
33 chunking is not enabled. Dir_Chunk should always be enabled.
34 Most FSAL modules especially FSAL_RGW/FSAL_GLUSTER need it to
35 make readdir work well.
36 Detached_Mult(uint32, range 1 to UINT32_MAX, default 1)
38 Max number of detached directory entries expressed as a multiple
39 of the chunk size.
40 Entries_HWMark(uint32, range 1 to UINT32_MAX, default 100000)
42 The point at which object cache entries will start being reused.
43 Entries_Release_Size(uint32, range 0 to UINT32_MAX, default 100)
45 The number of entries attempted to release each time when the
46 handle cache has exceeded the entries high water mark.
47 Chunks_HWMark(uint32, range 1 to UINT32_MAX, default 100000)
49 The point at which dirent cache chunks will start being reused.
50 LRU_Run_Interval(uint32, range 1 to 24 * 3600, default 90)
52 Base interval in seconds between runs of the LRU cleaner thread.
53 FD_Limit_Percent(uint32, range 0 to 100, default 99)
55 The percentage of the system-imposed maximum of file descriptors
56 at which Ganesha will deny requests.
57 FD_HWMark_Percent(uint32, range 0 to 100, default 90)
59 The percentage of the system-imposed maximum of file descriptors
60 above which Ganesha will make greater efforts at reaping.
61 FD_LWMark_Percent(uint32, range 0 to 100, default 50)
63 The percentage of the system-imposed maximum of file descriptors
64 below which Ganesha will not reap file descriptors.
65 Reaper_Work(uint32, range 1 to 2000, default 0)
67 Roughly, the amount of work to do on each pass through the
68 thread under normal conditions. (Ideally, a multiple of the
69 number of lanes.) This setting is deprecated. Please use
70 Reaper_Work_Per_Lane
71 Reaper_Work_Per_Lane(uint32, range 1 to UINT32_MAX, default 50)
73 This is the number of handles per lane to scan when performing
74 LRU maintenance. This task is performed by the Reaper thread.
75 Biggest_Window(uint32, range 1 to 100, default 40)
77 The largest window (as a percentage of the system-imposed limit
78 on FDs) of work that we will do in extremis.
79 Required_Progress(uint32, range 1 to 50, default 5)
81 Percentage of progress toward the high water mark required in in
82 a pass through the thread when in extremis
83 Futility_Count(uint32, range 1 to 50, default 8)
85 Number of failures to approach the high watermark before we dis‐
86 able caching, when in extremis.
87 Dirmap_HWMark(uint32, range 1 to UINT32_MAX, default 10000)
89 The point at which dirmap entries are reused. This puts a prac‐
90 tical limit on the number of simultaneous readdirs that may be
91 in progress on an export for a whence-is-name FSAL (currently
92 only FSAL_RGW)
93
95 ganesha-config(8)
96 Feb 28, 2023 GANESHA-CACHE-CONFIG(8)