Control: tags -1 + upstream Am 23.03.21 um 15:05 schrieb Marc Lehmann:
we were just debugging an issue where systemd-networkd did not restart on
some systems, with the following error:
Mar 23 13:29:50 cert systemd[1]: Starting Network Service...
Mar 23 13:29:50 cert systemd[564743]: systemd-networkd.service: Failed to
set up mount namespacing: /run/systemd/unit-r...
Mar 23 13:29:50 cert systemd[564743]: systemd-networkd.service: Failed at
step NAMESPACE spawning /lib/systemd/systemd-...
Mar 23 13:29:50 cert systemd[1]: systemd-networkd.service: Main process
exited, code=exited, status=226/NAMESPACE
Mar 23 13:29:50 cert systemd[1]: systemd-networkd.service: Failed with
result 'exit-code'.
Mar 23 13:29:50 cert systemd[1]: Failed to start Network Service.
As it turns out, this is due to an extremely fragile setup of networkd -
essentially, it requires working network connectivity to be restartable.
In our case, the issue above (which, btw., we could only diagnose by
strace'ing systemd as systemd gives absolutely no useful error message for
this) was a shared network filesystem mounted as /shared. And since we
had a network problem (that restarting networkd with a better config was
supposed to fix), at some point accesses to /shared caused it to fail with
ENOTCONN.
This in turn caused sysstemd to not be able to set up the private fs
namespace, eventually causing the failure:
[pid 564996] statx(4, "shared",
AT_STATX_SYNC_AS_STAT|AT_SYMLINK_NOFOLLOW|AT_NO_AUTOMOUNT, 0, 0x7ffdadcf3d30) = -1
ENOTCONN (Transport endpoint is not connected)
Please consider raising this upstream at https://github.com/systemd/systemd It's very likely that upstream has some follow up questions.I would suggest to include your strace in that upstream bug report and also attach your /etc/fstab.
Thanks
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