Bug 2014528

Summary:	RFE: Prevent hardened services from hanging when external mount is misbehaving
Product:	Red Hat Enterprise Linux 8	Reporter:	Renaud Métrich <rmetrich>
Component:	systemd	Assignee:	systemd-maint
Status:	CLOSED DUPLICATE	QA Contact:	Frantisek Sumsal <fsumsal>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	8.4	CC:	dtardon, systemd-maint-list
Target Milestone:	rc	Keywords:	FutureFeature
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-18 10:37:16 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Renaud Métrich 2021-10-15 13:45:11 UTC

Description of problem:

With RHEL8, we have more and more services using the `ProtectSystem` property, which leads to remounting in some namespaces the current mount points.

When a mount point, e.g. a NFS share, is hanging, this leads to having all these services just hang as well upon restart, between fork and exec in the child (hence it's still pure systemd code).
Additionally, systemd won't make the service fail on timeout, because at this point there is no timeout considered at all, seems like.

Having some new property that would let systemd only mount "local mount points" would help increase the robustness of such services, some are really critical to the system, e.g. NetworkManager, postfix, systemd-coredump instances, chronyd, etc.


Version-Release number of selected component (if applicable):

systemd-239

Comment 2 David Tardon 2021-10-18 10:37:16 UTC


*** This bug has been marked as a duplicate of bug 1885143 ***