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65 lines
1.9 KiB
65 lines
1.9 KiB
#!/usr/bin/env python3
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import os
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import sys
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from posix_parity import fail
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from posix_parity import mergerfs_get_option
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from posix_parity import mergerfs_set_option
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def main():
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if len(sys.argv) != 2:
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print("usage: TEST_cfg_statfs_ignore <mountpoint>", file=sys.stderr)
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return 1
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mount = sys.argv[1]
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try:
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orig_statfs = mergerfs_get_option(mount, "statfs")
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orig_ignore = mergerfs_get_option(mount, "statfs-ignore")
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except (PermissionError, FileNotFoundError, OSError):
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return 0
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try:
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mergerfs_set_option(mount, "statfs", "base")
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mergerfs_set_option(mount, "statfs-ignore", "none")
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s_none = os.statvfs(mount)
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mergerfs_set_option(mount, "statfs-ignore", "nc")
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s_nc = os.statvfs(mount)
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mergerfs_set_option(mount, "statfs-ignore", "ro")
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s_ro = os.statvfs(mount)
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# Ignoring additional branch classes should never increase available blocks.
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if s_nc.f_bavail > s_none.f_bavail:
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return fail(
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f"statfs-ignore=nc increased bavail unexpectedly nc={s_nc.f_bavail} none={s_none.f_bavail}"
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)
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if s_ro.f_bavail > s_nc.f_bavail:
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return fail(
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f"statfs-ignore=ro increased bavail unexpectedly ro={s_ro.f_bavail} nc={s_nc.f_bavail}"
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)
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mergerfs_set_option(mount, "statfs", "full")
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s_full = os.statvfs(mount)
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if s_full.f_bsize <= 0 or s_full.f_frsize <= 0:
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return fail(
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f"statfs=full invalid block sizes bsize={s_full.f_bsize} frsize={s_full.f_frsize}"
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)
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except (PermissionError, FileNotFoundError, OSError):
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return 0
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finally:
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try:
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mergerfs_set_option(mount, "statfs", orig_statfs)
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mergerfs_set_option(mount, "statfs-ignore", orig_ignore)
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except OSError:
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pass
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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