Implement gldf, gldu

[NuxRo]

Hello,

Currently there is no way of knowing how big a volume is, one needs to mount and run "du" on it.
Please implement a gldu, gldf so admins can easily see disk usage of the volumes.

Thanks!

[prashanthpai]

Here's a quick python script:

#!/usr/bin/env python
import sys
from gluster import gfapi

SERVER = '127.0.0.1'
MB = (1024 * 1024)
GB = MB * 1024

def get_volume_usage(volume):
    v = gfapi.Volume(SERVER, volume)
    try:
        v.mount()
        s = v.statvfs("/")
    except:
        print("Mount()/Statvfs() failed for volume %s\n" % volume)
    else:
        total = (s.f_blocks * s.f_frsize) / MB
        free = (s.f_bavail * s.f_bsize) / MB
        used = total - free
        print("volume=%s: total=%d, used=%d, free=%d" % (volume, total, used, free))
    finally:
        if v.mounted:
            v.umount()

if __name__ == '__main__':
    for i in range(1, len(sys.argv)):
        get_volume_usage(sys.argv[i])

Usage:

$ ./pyscript.py test test2
volume=test: total=950, used=534, free=416
volume=test2: total=950, used=34, free=916

Make sure you have libgfapi-python installed:

$ sudo dnf install python2-glusterfs-api

or

$ sudo dnf install python-pip
$ sudo pip install gfapi

[NuxRo]

Thank you, for now I have found out this great tool:
https://github.com/aravindavk/glusterfs-tools

Looking forward to seeing this functionality in glusterfs-coreutils, though!