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Bug 1447848

Summary: atomic command can't mount/unmount when the docker daemon isn't running
Product: Red Hat Enterprise Linux 7 Reporter: Alex Jia <ajia>
Component: atomicAssignee: Brent Baude <bbaude>
Status: CLOSED ERRATA QA Contact: atomic-bugs <atomic-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.4CC: bbaude, ddarrah, dwalsh, fkluknav, lsm5
Target Milestone: rcKeywords: Extras
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-05-26 14:29:13 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 Alex Jia 2017-05-04 03:39:25 UTC
Description of problem:
atomic command can't mount/unmount when the docker daemon isn't running, whatever the storage backend is ostree or not.

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

[root@dhcp-2-50 ~]# rpm -q atomic docker skopeo
atomic-1.17.1-1.gitf304570.el7.x86_64
docker-1.12.6-19.git92b10e4.el7.x86_64
skopeo-0.1.19-1.el7.x86_64


How reproducible:
always

Steps to Reproduce:
1. atomic pull busybox --storage ostree
2. systemctl stop docker
3. atomic mount busybox /mnt

Actual results:

[root@hp-dl360g9-04 ~]# atomic pull busybox --storage ostree
Pulling layer 7520415ce76232cdd62ecc345cea5ea44f5b6b144dc62351f2cd2b08382532a3
[root@hp-dl360g9-04 ~]# atomic images list
   REPOSITORY          TAG      IMAGE ID       CREATED            VIRTUAL SIZE   TYPE        
   busybox             latest   32f093055929   2017-05-04 11:36                  ostree

[root@hp-dl360g9-04 ~]# systemctl stop docker
[root@hp-dl360g9-04 ~]# atomic images list
   REPOSITORY TAG      IMAGE ID       CREATED            VIRTUAL SIZE   TYPE      
   busybox   latest   32f093055929   2017-05-04 11:36                  ostree    

[root@hp-dl360g9-04 ~]# atomic mount busybox /mnt
The docker daemon does not appear to be running.

Expected results:

atomic mount/umount shouldn't depend on docker daemon when the storage backend is ostree

Additional info:

https://trello.com/c/K8QujNBk/93-5-atomic-mount-umount-without-docker-daemon

Comment 2 Brent Baude 2017-05-09 17:28:11 UTC
Merged https://github.com/projectatomic/atomic/pull/998

Comment 3 Alex Jia 2017-05-10 01:48:12 UTC
(In reply to Brent Baude from comment #2)
> Merged https://github.com/projectatomic/atomic/pull/998

This patch works well for me.

[root@dhcp-2-50 atomic]# mkdir -p /mnt/foo/bar
[root@dhcp-2-50 atomic]# systemctl is-active docker
inactive

[root@dhcp-2-50 atomic]# ./atomic mount busybox /mnt/foo
The destination path is not empty.

[root@dhcp-2-50 atomic]# echo $?
1

[root@dhcp-2-50 atomic]# ./atomic --debug mount busybox /mnt/foo/bar
mount -t overlay overlay -olowerdir=/var/lib/containers/atomic/.storage/7520415ce76232cdd62ecc345cea5ea44f5b6b144dc62351f2cd2b08382532a3 /mnt/foo/bar
mount: wrong fs type, bad option, bad superblock on overlay,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.
Extracting to /mnt/foo/bar

[root@dhcp-2-50 atomic]# ls /mnt/foo/bar
bin  dev  etc  home  root  tmp  usr  var

[root@dhcp-2-50 atomic]# mount | grep foo
/dev/mapper/rhel-root on /mnt/foo/bar type xfs (rw,relatime,seclabel,attr2,inode64,noquota)

[root@dhcp-2-50 atomic]# ./atomic --debug umount /mnt/foo/bar
[root@dhcp-2-50 atomic]# echo $?
0
[root@dhcp-2-50 atomic]# mount | grep foo
[root@dhcp-2-50 atomic]#

Comment 5 Alex Jia 2017-05-17 11:31:25 UTC
It works well in atomic-1.17.2-2.git2760e30.el7.x86_64.

Comment 7 errata-xmlrpc 2017-05-26 14:29:13 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://access.redhat.com/errata/RHBA-2017:1323