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Bug 1667065 - systemd tmp mount not working
Summary: systemd tmp mount not working
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: systemd
Version: 8.0
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: 8.0
Assignee: Jan Synacek
QA Contact: Frantisek Sumsal
Depends On:
TreeView+ depends on / blocked
Reported: 2019-01-17 11:04 UTC by adam winberg
Modified: 2020-11-14 11:38 UTC (History)
8 users (show)

Fixed In Version: systemd-239-15.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2019-11-05 22:24:37 UTC
Type: Bug
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:3592 0 None None None 2019-11-05 22:24:56 UTC

Description adam winberg 2019-01-17 11:04:42 UTC
Description of problem:
In RHEL7, I could enable the systemd /tmp tmpfs mount with:
$ systemctl enable tmp.mount

This does not work in RHEL8, and the systemd /tmp mount is not activated automatically either. 

In RHEL7, there is an '[Install]' section in the tmp.mount systemd file which makes it possible to enable it. This section is missing in RHEL8. 

So - what is the recommended approach to set /tmp as tmpfs mount in RHEL8? (I know I can do it via fstab, but I thought systemd was the way to do it nowadays). 

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

How reproducible:

Steps to Reproduce:
1. systemctl enable tmp.mount

Actual results:
Output from systemctl:

The unit files have no installation config (WantedBy, RequiredBy, Also, Alias
settings in the [Install] section, and DefaultInstance for template units).
This means they are not meant to be enabled using systemctl.
Possible reasons for having this kind of units are:
1) A unit may be statically enabled by being symlinked from another unit's
   .wants/ or .requires/ directory.
2) A unit's purpose may be to act as a helper for some other unit which has
   a requirement dependency on it.
3) A unit may be started when needed via activation (socket, path, timer,
   D-Bus, udev, scripted systemctl call, ...).
4) In case of template units, the unit is meant to be enabled with some
   instance name specified.

Expected results:
/tmp should be mounted as tmpfs by systemd

Additional info:

Comment 1 Jan Synacek 2019-01-22 09:23:45 UTC
(In reply to adam winberg from comment #0)
> So - what is the recommended approach to set /tmp as tmpfs mount in RHEL8?
> (I know I can do it via fstab, but I thought systemd was the way to do it
> nowadays). 

'systemctl enable tmp.mount' should work, it's a bug. Thanks for reporting it!

Comment 3 Jan Synacek 2019-01-22 09:40:25 UTC

Comment 5 Lukáš Nykrýn 2019-05-02 15:21:51 UTC
fix merged to staging branch -> https://github.com/lnykryn/systemd-rhel/pull/275 -> post

Comment 6 adam winberg 2019-05-14 10:18:30 UTC
RHEL8.0 is released but this bug is still present. When is it expected to be fixed?

Comment 8 Aaron Howell 2019-08-08 02:21:46 UTC
Have just discovered this issue as well - when is this going to be released asan Errata?

Comment 12 errata-xmlrpc 2019-11-05 22:24:37 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.


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