[Samba] samba-tool domain backup offline stalls
James B. Byrne
byrnejb at harte-lyne.ca
Thu Jul 23 15:27:06 UTC 2020
On Wed, July 22, 2020 21:47, Andrew Bartlett wrote:
> Are you using DLZ_BIND9? There is a bug where it doesn't know the locking
rules for those files.
No. I am using the internal dns service.
> Otherwise, work out which commend it is waiting on (the child) and
> what lock that is waiting on (lslocks on linux is what I used to
> debug this stuff).
There does not appear to be any child process:
[root at smb4-2 private]# ps -auwx | grep python
root 16001 0.0 0.0 11448 2812 1 R+J 11:01 0:00.00 grep --color=auto
python
root 14795 0.0 0.6 143248 94216 2 I+J 10:05 0:05.59
/usr/local/bin/python3.7 -m trace --trace /usr/local/bin/samba-tool doma
The code immediately before the point the offline script stalls is:
--- modulename: os, funcname: fsencode
os.py(812): filename = fspath(filename) # Does type-checking of
`filename`.
os.py(813): if isinstance(filename, str):
os.py(814): return filename.encode(encoding, errors)
subprocess.py(1466): if os.path.dirname(executable):
--- modulename: posixpath, funcname: dirname
posixpath.py(156): p = os.fspath(p)
posixpath.py(157): sep = _get_sep(p)
--- modulename: posixpath, funcname: _get_sep
. . .
--- modulename: subprocess, funcname: __enter__
subprocess.py(845): return self
subprocess.py(340): try:
subprocess.py(341): return p.wait(timeout=timeout)
--- modulename: subprocess, funcname: wait
subprocess.py(1016): if timeout is not None:
subprocess.py(1018): try:
subprocess.py(1019): return self._wait(timeout=timeout)
--- modulename: subprocess, funcname: _wait
subprocess.py(1623): if self.returncode is not None:
subprocess.py(1626): if timeout is not None:
subprocess.py(1649): while self.returncode is None:
subprocess.py(1650): with self._waitpid_lock:
subprocess.py(1651): if self.returncode is not None:
subprocess.py(1653): (pid, sts) = self._try_wait(0)
--- modulename: subprocess, funcname: _try_wait
subprocess.py(1610): try:
subprocess.py(1611): (pid, sts) = os.waitpid(self.pid, wait_flags)
This is FreeBSD so lslock is only available in Linux compatibility mode, which
is not the case in this instance.
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James B. Byrne mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited http://www.harte-lyne.ca
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