Migration owncloud 9.0.4 to 10.0.0.0 fails with could not acquire a shared lock on the config file

🚧 Installation
#1

I’m trying to upgrade my current owncloud 9.0.4 installation to nextcloud 10.

I essentially followed the basic steps (moved /var/www/owncloud away, created /var/www/owncloud new, copied data, config, .htaccess and .user.ini, downloaded nextcloud 10, copied into /var/www/owncloud, changed permissions). When I then run

/var/www/owncloud# sudo -u www-data php occ upgrade

I get:

An unhandled exception has been thrown:
Exception: Could not acquire a shared lock on the config file /var/www/owncloud/config/config.php in /var/www/owncloud/lib/private/Config.php:199
Stack trace:
#0 /var/www/owncloud/lib/private/Config.php(59): OC\Config->readData()
#1 /var/www/owncloud/lib/base.php(129): OC\Config->__construct('/var/www/ownclo...')
#2 /var/www/owncloud/lib/base.php(574): OC::initPaths()
#3 /var/www/owncloud/lib/base.php(1043): OC::init()
#4 /var/www/owncloud/console.php(48): require_once('/var/www/ownclo...')
#5 /var/www/owncloud/occ(11): require_once('/var/www/ownclo...')
#6 {main}

Not sure what that means. config.php permissions look ok to me:

root@server642:/var/www/owncloud# ls -l /var/www/owncloud/config/config.php
-rw-r----- 1 www-data www-data 1056 Sep  1 10:10 /var/www/owncloud/config/config.php
#2

Have you remove all old code before (only keep data/ and config/-folder)?

#3

Yep, as said above, I started by moving the old owncloud directory away entirely, and then only copied the mentioned dirs/files back.

#4

Strange, normally this is a permission issue. www-data can write in folder config/?
ref:

#5

Yep.

:/var/www/owncloud/config# ls -la
insgesamt 55
drwxr-x---  2 www-data www-data     6 Sep  1 14:23 .
drwxr-x--- 16 root     www-data    31 Sep  1 10:35 ..
-rw-r-----  1 www-data www-data  1430 Sep  1 14:23 config.php
-rw-r-----  1 www-data www-data 40317 Aug 25 05:59 config.sample.php
-rw-r-----  1 www-data www-data   105 Sep  1 10:10 disable-updatechecker.config.php
-rw-r-----  1 www-data www-data   225 Sep  1 10:10 .htaccess
#6

Looks good. Slowly running out of ideas. On the terminal you have a current php5.4+?
sudo -u www-data php --version
or perhaps some required modules are missing or are not activated in the cli-version (compare /etc/php*/cli with /etc/php*/apache2

If that doesn’t help, open a bug report on github.com/nextcloud/server/issues, you can link the post here and the other thread from owncloud.

#7

Ubuntu 16.04 comes with PHP7:

PHP 7.0.8-0ubuntu0.16.04.2 (cli) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies
    with Zend OPcache v7.0.8-0ubuntu0.16.04.2, Copyright (c) 1999-2016, by Zend Technologies

I’d be surprised, if PHP modules were part of the issue, as owncloud was running, and PHP requirements should be similar… Will check that later in detail.

#8

Did this ever get resolved? I’m just curious, it is a weird error :wink: