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Bug 1114378

Summary:	first boot race condition: couldn't create Tag store: unexpected end of JSON input
Product:	[Retired] Atomic	Reporter:	Colin Walters <walters>
Component:	docker-io	Assignee:	Vivek Goyal <vgoyal>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dwalsh, fdeutsch, msnitzer
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-08-21 03:24:54 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 Colin Walters 2014-06-29 19:48:57 UTC

I frequently see this error on fresh start of an empty OS:

[71ab01f0] -job initserver() = ERR(1)
Couldn't create Tag store: unexpected end of JSON input

Searching the web, the most useful bug report on this I've found is:

https://github.com/coreos/coreos-vagrant/issues/12

Which is kind of weird as it was resolved by a fix related to timezone handling??

Needs investigation.

Comment 1 Daniel Walsh 2014-09-15 19:55:04 UTC

Colin do you still see this?

Comment 2 Colin Walters 2014-09-17 18:02:40 UTC

Yep, pretty often still.  Might be reproducible by a loop of:

systemctl stop docker
rm /var/lib/docker/* -rf
systemctl start docker 

?

Comment 3 Daniel Walsh 2015-03-10 00:34:15 UTC

Is this problem fixed?

Comment 4 Fabian Deutsch 2015-04-01 12:41:55 UTC

I am still seeing this with CentOS-7-x86_64-AtomicHost-20150228_01

Comment 7 Daniel Walsh 2015-07-21 13:17:30 UTC

The people who are hitting this, soposedly the fix is to remove /var/lib/docker/repositories-btrfs.  Could we somehow be ending up with a corrupt /var/lib/docker/repositories-devicemapper

Comment 8 Daniel Walsh 2015-07-21 13:18:59 UTC

In Daemon.go we see this causes the error.

	repositories, err := graph.NewTagStore(filepath.Join(config.Root, "repositories-"+d.driver.String()), tagCfg)
	if err != nil {
		return nil, fmt.Errorf("Couldn't create Tag store: %s", err)
	}

Comment 9 Daniel Walsh 2015-08-21 03:24:54 UTC

I think this has been fixed.