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Bug 1314693

Summary:	Fix rule setting SYSTEMD_READY=0 for DM devices (like multipath) which may cause improper automatic unmounts
Product:	Red Hat Enterprise Linux 7	Reporter:	Libor Miksik <lmiksik>
Component:	systemd	Assignee:	systemd-maint
Status:	CLOSED ERRATA	QA Contact:	Radka Brychtova <rskvaril>
Severity:	high	Docs Contact:
Priority:	urgent
Version:	7.3	CC:	bblaskov, fkrska, matt.schulte, mnavrati, ng-hsg-engcustomer-iop-bz, prajnoha, rsawhill, rskvaril, Ryan.Rodine, systemd-maint-list, systemd-maint, yhuang
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	systemd-219-19.el7_2.7	Doc Type:	Bug Fix
Doc Text:	The device mapper sets the DM_UDEV_DISABLE_OTHER_RULES_FLAG signal to indicate that other rules should not react to the event. However, systemd previously considered the related device not to be ready for use, which is only true for the ADD event. As a consequence, overlaying file systems on the devices were unmounted even if only one path became unavailable, but other paths were still accessible. With this update, the device is marked as unusable only in case of ADD events, and CHANGE events are ignored. As a result, file systems are no longer unmounted if a CHANGE event occurs.	Story Points:	---
Clone Of:	1312011	Environment:
Last Closed:	2016-03-31 21:55:48 UTC	Type:	---
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:	1312011
Bug Blocks:

Description Libor Miksik 2016-03-04 09:19:01 UTC

This bug has been copied from bug #1312011 and has been proposed
to be backported to 7.2 z-stream (EUS).

Comment 3 Lukáš Nykrýn 2016-03-04 09:26:22 UTC

https://github.com/lnykryn/systemd-rhel/commit/92f17bb12a37fe9deb0868ef8c4a43696319e72e

Comment 7 errata-xmlrpc 2016-03-31 21:55:48 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-0181.html