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src/bin/proxmox-backup-proxy.rs: gather root disk stats

This commit is contained in:
Dietmar Maurer 2020-05-25 11:10:07 +02:00
parent c1b24fbf0b
commit dd15c0aa3b
1 changed files with 30 additions and 0 deletions
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30
src/bin/proxmox-backup-proxy.rs
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@ -658,5 +658,35 @@ async fn generate_host_stats() {
eprintln!("read_prox_net_dev failed - {}", err);
}
}
match disk_usage(std::path::Path::new("/")) {
Ok((total, used, _avail)) => {
if let Err(err) = rrd::update_value("host/roottotal", total as f64, rrd::DST::Gauge) {
eprintln!("rrd::update_value 'host/roottotal' failed - {}", err);
}
if let Err(err) = rrd::update_value("host/rootused", used as f64, rrd::DST::Gauge) {
eprintln!("rrd::update_value 'host/rootused' failed - {}", err);
}
}
Err(err) => {
eprintln!("read root disk_usage failed - {}", err);
}
}
});
}
// Returns (total, used, avail)
fn disk_usage(path: &std::path::Path) -> Result<(u64, u64, u64), Error> {
let mut stat: libc::statfs64 = unsafe { std::mem::zeroed() };
use nix::NixPath;
let res = path.with_nix_path(|cstr| unsafe { libc::statfs64(cstr.as_ptr(), &mut stat) })?;
nix::errno::Errno::result(res)?;
let bsize = stat.f_bsize as u64;
Ok((stat.f_blocks*bsize, (stat.f_blocks-stat.f_bfree)*bsize, stat.f_bavail*bsize))
}