Bug 1286242

Summary:	slaved udevd mnt namespace prevents rename of bind-mounted files.
Product:	Red Hat Enterprise Linux 7	Reporter:	Fabian Deutsch <fdeutsch>
Component:	systemd	Assignee:	systemd-maint
Status:	CLOSED DUPLICATE	QA Contact:	qe-baseos-daemons
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.2	CC:	systemd-maint-list
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-10-29 13:17:15 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:
Bug Depends On:
Bug Blocks:	1263648

Description Fabian Deutsch 2015-11-27 15:02:57 UTC

Description of problem:
In RHEV-H we are using a tmpfs'ed /etc, wthint this tmpfs'ed etc we are using bind.mounts to bind-mount in config files (which reside on a writable partition elsewhere).
Once udevd comes up, these files ran not be renamed anymore - even if unmounted - because udevd is keeping the bind-mounts in it's mnt namespace.

Version-Release number of selected component (if applicable):
systemd-219-19.el7

How reproducible:
Always

Steps to Reproduce:
1. See bug 1263648
2.
3.

Actual results:


Expected results:


Additional info:

Comment 1 Fabian Deutsch 2015-11-27 15:06:56 UTC

PR available here:
https://github.com/systemd/systemd/pull/2050

Comment 2 Fabian Deutsch 2015-11-27 15:15:47 UTC

How to reproduce:

1. tmpfs on /tmp
2. touch /tmp/shadow
3. mount --bind /etc/shadow /tmp/shadow
4. systemctl restart systemd-udevd.service
5. umount /tmp/shadow
6. mv /tmp/shadow /tmp/shadow-

6 fails with "mv: cannot move 'shadow' to 'shadow-': Device or resource busy"

Comment 4 Lukáš Nykrýn 2018-10-29 13:17:15 UTC


*** This bug has been marked as a duplicate of bug 1432211 ***