[systemd-devel] Local mount as a remote-fs?

[Silvio Knizek]

Am Montag, den 04.12.2017, 14:25 +0300 schrieb Andrey Klimentyev:
> Hi,
> 
> Is it possible to register local mount as a remote-fs?
> 
> I've got a rather peculiar problem with Kubernetes and Ceph:
> 1. kubelet creates an rbd device in /dev;
> 2. it mounts it to some location;
> 3. systemd adds local-fs.target and local-fs-pre.target to  Before=
> and
> After= directives on auto-created .mount Units.
> 
> Unfortunately, with that approach thing get rather messy on shutdown.
> Ceph
> RBD kernel client detects network outage (since we've already
> disabled the
> network) and stops all I/O to those filesystems, while systemd
> actively
> tries to umount them. systemd depends on umounting those filesystems,
> and
> Ceph depends on an online network to properly finish all I/O and
> unmount
> them, thus creating a kind of a deadlock.

Hi,

use the mount option »_netdev«, which declares a device as dependent on
network. See »man mount« for more information.

BR
Silvio