57 lines
1.6 KiB
Plaintext
57 lines
1.6 KiB
Plaintext
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#!/usr/bin/python3
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import os
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import socket
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import time
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from ltsdb_json import LTS
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# Use a whitelist since there are a lot of uninteresting file system
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# types on modern linux systems
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interesting_fstypes = {"ext4", "tmpfs", "vfat"}
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# It's a bit weird that this works.
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hostname = socket.gethostbyaddr(socket.gethostname())[0]
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with open("/proc/mounts") as mfh:
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for ln in mfh:
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(dev, mountpoint, fstype, options, _, _) = ln.split()
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if fstype not in interesting_fstypes:
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continue
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st = os.statvfs(mountpoint)
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now = time.time()
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# We record the capacity usable by unprivileged processes, not the
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# total size of the filesystem. This is more relevant and also what df
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# uses as the "100%" mark.
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blocks_reserved = st.f_bfree - st.f_bavail
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blocks_usable = st.f_blocks - blocks_reserved
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blocks_used = st.f_blocks - st.f_bfree
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bytes_usable = blocks_usable * st.f_bsize
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bytes_used = blocks_used * st.f_bsize
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ts = LTS(
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{
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"hostname": hostname,
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"mountpoint": mountpoint,
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"fstype": fstype,
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"measure": "bytes_usable",
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"unit": "bytes",
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}
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)
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ts.add(now, bytes_usable)
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ts.save()
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ts = LTS(
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{
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"hostname": hostname,
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"mountpoint": mountpoint,
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"fstype": fstype,
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"measure": "bytes_used",
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"unit": "bytes",
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}
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)
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ts.add(now, bytes_used)
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ts.save()
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