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Bug 921940

Summary: virt-sandbox-service wrongly assume /var/log/journal exists
Product: Red Hat Enterprise Linux 7 Reporter: Monson Shao <jshao>
Component: libvirt-sandboxAssignee: Daniel Berrangé <berrange>
Status: CLOSED CURRENTRELEASE QA Contact: Virtualization Bugs <virt-bugs>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.0CC: ajia, ccui, dyuan, gsun, zpeng
Target Milestone: beta   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: libvirt-sandbox-0.2.0-1.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-06-13 10:03:08 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 Monson Shao 2013-03-15 10:13:38 UTC 
Description of problem:

In virt-sandbox-service: Container.gen_machine_id():

330        journalfile = "/var/log/journal/" + uuid                   
331        fd=open(self.dest + journalfile, "w")                             
332        fd.close()                                                        
333        os.symlink(self.dest + journalfile, journalfile)                 
334                                                                          
335    def __gen_filesystems(self):                                          
336        if self.use_image:                                                          

It assumes that /var/log/journal/ exists.
But according to journald.conf(5), missing /var/log/journal is allowed.
Actually, that directory won't be created by default and is shipped with no packages.

Version-Release number of selected component (if applicable):
v0.1.2

How reproducible:
100%

Steps to Reproduce:
run virt-sandbox-service while /var/log/journal/ doesn't exist.
  
Actual results:
virt-sandbox-service exit halfway and print:
/usr/bin/virt-sandbox-service: [Errno 2] No such file or directory

Expected results:
   a) create /var/log/journal/ automatically
or b) don't create the symbol link
Anyway, virt-sandbox-service should not die of non-fatal exception.
Comment 2 Daniel Berrangé 2013-03-20 16:12:32 UTC 
commit 6b8a314f58e1678a4ba419aaa17c88145a7a5105
Author: Daniel P. Berrange <berrange>
Date:   Wed Mar 20 16:08:55 2013 +0000

    Don't assume /var/log/journal exists
    
    When creating the journal symlink, create /var/log/journal if
    it does not already exist. Also handle fact that the journal
    symlink might have been removed, when deleting a sandbox.
Comment 3 dyuan 2013-03-22 02:57:04 UTC 
When I upgrade systemd to systemd-198-4.el7, the /var/log/journal will created by default. But it's still necessary to determine whether folder exists or not.
Comment 4 Wayne Sun 2013-07-18 07:57:13 UTC 
pkgs:
libvirt-1.1.0-2.el7.x86_64
libvirt-sandbox-0.2.1-1.el7.x86_64
kernel-3.9.0-0.55.el7.x86_64
systemd-204-4.el7.x86_64

steps:
1. move journal dir
# mv /var/log/journal/ /tmp

2. create a container
# virt-sandbox-service -c lxc:/// create -C -u httpd.service -s static,label=system_u:system_r:svirt_lxc_net_t:s0:c11,c221 -N dhcp,source=default apache2
Created sandbox container dir /var/lib/libvirt/filesystems/apache2
Created unit file /etc/systemd/system/apache2_sandbox.service
Created sandbox config /etc/libvirt-sandbox/services/apache2.sandbox

3. check journal dir
# ll /var/log/journal -d
drwxr-xr-x. 2 root root 4096 Jul 18 15:51 /var/log/journal

# ll /var/log/journal
total 4
lrwxrwxrwx. 1 root root 85 Jul 18 15:51 2739e363fa6c4b2396b43e32608b2337 -> /var/lib/libvirt/filesystems/apache2/var/log/journal/2739e363fa6c4b2396b43e32608b2337

4. delete a container
# rm -rf /var/log/journal/2739e363fa6c4b2396b43e32608b2337/
# virt-sandbox-service delete apache2
# echo $?
0

and delete with domain uuid journal dir exist also success, so this is fixed.
Comment 6 Ludek Smid 2014-06-13 10:03:08 UTC 
This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.