Re: [Xen-devel] [PATCH] tools/hotplug: update systemd dependency to use service instead of socket

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Tue, Dec 02, 2014 at 06:51:50PM +0000, M A Young wrote:
> On Tue, 2 Dec 2014, Konrad Rzeszutek Wilk wrote:
> 
> >On Tue, Dec 02, 2014 at 03:44:55PM +0000, Ian Campbell wrote:
> >>On Tue, 2014-12-02 at 16:39 +0100, Olaf Hering wrote:
> >>>Since commit 4542ae340d75bd6319e3fcd94e6c9336e210aeef ("tools/hotplug:
> >>>systemd xenstored dependencies") all service files use the .socket unit
> >>>as startup dependency. While this happens to work for boot it fails for
> >>>shutdown because a .socket does not seem to enforce ordering. When
> >>>xendomains.service runs during shutdown then systemd will stop
> >>>xenstored.service at the same time.
> >>>
> >>>Change all "xenstored.socket" to "xenstored.service" to let systemd know
> >>>that xenstored has to be shutdown after everything else.
> >>>
> >>>Reported-by: Mark Pryor <tlviewer@xxxxxxxxx>
> >>>Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
> >>>Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> >>>Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> >>
> >>Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> >>
> >>>Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
> >>>---
> >>>
> >>>This should go into 4.5 to fix xendomains.service.
> >>
> >>CCing Konrad...
> >
> >CC-ing Michael.
> >
> >Michael, since Fedora is using systemd, did you observe this bug as well?
> >(I think I did, but I might have blamed it on my wacky setup).
> 
> I only tried the xen systemd on xen 4.5-rc2 and didn't have a lot of success
> even when I reverted to Fedora's systemd for xen, so I can't really comment.
> I did have issues with xen systemd which I shall report if they are still
> there in -rc3.

It seems that hte issue I am having is:

ELinux: security_context_to_sid($XENSTORED_MOUNT_CTX) failed for (dev tmpfs, 
type tmpfs) er
Dec 03 11:46:07 laptop.dumpdata.com systemd[1]: var-lib-xenstored.mount mount 
process exited, code=exited status=32
Dec 03 11:46:07 laptop.dumpdata.com systemd[1]: Failed to mount mount xenstore 
file system.

Which looks like so:

[root@laptop system]# more var-lib-xenstored.mount 
[Unit]
Description=mount xenstore file system
Requires=proc-xen.mount
After=proc-xen.mount
ConditionPathExists=/proc/xen/capabilities
RefuseManualStop=true

[Mount]
Environment=XENSTORED_MOUNT_CTX=none
EnvironmentFile=-/etc/sysconfig/xenstored
What=xenstore
Where=/var/lib/xenstored
Type=tmpfs
Options=mode=755,context="$XENSTORED_MOUNT_CTX"


There is no /etc/sysconfig/xenstored (there is an oxenstored.conf)

If I alter it:

Options=mode=755
#,context="$XENSTORED_MOUNT_CTX"

It starts.
> 
>       Michael Young

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