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diff --git a/extras/vpp_stats_fs/README.md b/extras/vpp_stats_fs/README.md new file mode 100755 index 00000000000..3b0b09468a6 --- /dev/null +++ b/extras/vpp_stats_fs/README.md @@ -0,0 +1,61 @@ +# VPP stats segment FUSE filesystem + +The statfs binary allows to create a FUSE filesystem to expose and to browse the stats segment. +Is is leaned on the Go-FUSE library and requires Go-VPP stats bindings to work. + +The binary mounts a filesystem on the local machine whith the data from the stats segments. +The counters can be opened and read as files (e.g. in a Unix shell). +Note that the value of a counter is determined when the corresponding file is opened (as for /proc/interrupts). + +Directories regularly update their contents so that new counters get added to the filesystem. + +## Prerequisites (for building) + +**GoVPP** library (master branch) +**Go-FUSE** library +vpp, vppapi + +## Building + +Here, we add the Go librairies before building the binary +```bash +go mod init stats_fs +go get git.fd.io/govpp.git@master +go get git.fd.io/govpp.git/adapter/statsclient@master +go get github.com/hanwen/go-fuse/v2 +go build +``` + +## Usage + +The basic usage is: +```bash +sudo ./statfs <MOUNT_POINT> & +``` +**Options:** + - debug \<true|false\> (default is false) + - socket \<statSocket\> (default is /run/vpp/stats.sock) + +## Browsing the filesystem + +You can browse the filesystem as a regular user. +Example: + +```bash +cd /path/to/mountpoint +cd sys/node +ls -al +cat names +``` + +## Unmounting the file system + +You can unmount the filesystem with the fusermount command. +```bash +sudo fusermount -u /path/to/mountpoint +``` + +To force the unmount even if the resource is busy, add the -z option: +```bash +sudo fusermount -uz /path/to/mountpoint +```
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