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Is there a way to make sar (from sysstat) collect free disk space data?

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up vote 3 down vote accepted

Maybe this post is old, however, you can get the disk space with the current version (sysstat-11.1.1)


[root@ipboss-linux ~]# sar -F 1 1
Linux 2.6.32-358.el6.x86_64 (ipboss-linux.qualif.fr)    09/23/2014      _x86_64_        (8 CPU)

11:21:16 AM  MBfsfree  MBfsused   %fsused  %ufsused     Ifree     Iused    %Iused FILESYSTEM
11:21:17 AM      4974      4869     49.47     54.55    441591    199257     31.09 /dev/sda3
11:21:17 AM        65        32     32.71     37.87     25649        39      0.15 /dev/sda1
11:21:17 AM    215269      1278      0.59      5.67  14068929     13119      0.09 /dev/sda2
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Great, thank you. – Fadi Mansour Sep 23 '14 at 19:49

No, it can not. My guess on the reason is that it isn't necessarily tied directly to performance, at least not in a way that makes sense in polled intervals.

munin is an example of a tool that will do this, but it writes to RRD files, which can not be in a human readable form from the command line.

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I wonder if there's a way to add a custom measure to the data collected by sar, or would it be better to create a parallel system to collect that? Hmmmm! – Fadi Mansour Feb 10 '13 at 19:37

Run sadc with the XDISK option and it collects filesystem usage data.

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