Cannot restore borg backup in Nextcloud AIO

Flappy · May 31, 2023, 4:21pm

Nextcloud version: Nextcloud AIO v5.2.2
Operating system and version: Gentoo
Apache or nginx version: AIO default
PHP version: AIO default

Steps to replicate it:

Get a borg backup from another nextcloud server machine, and place it inside new host;
Make a fresh Nextcloud AIO install on new machine;
Try to restore using interface with folder ‘/home/user/backup’ and my backup password

The output of your Nextcloud log in mastercontainer:

OTICE: PHP message: Slim Application Error
Type: GuzzleHttp\Exception\ServerException
Code: 500
Message: Server error: `POST http://localhost/v1.41/containers/nextcloud-aio-borgbackup/start` resulted in a `500 Internal Server Error` response:
{&quot;message&quot;:&quot;error gathering device information while adding custom device \&quot;/dev/fuse\&quot;: no such file or directory&quot;}
File: /var/www/docker-aio/php/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php
Line: 113
Trace: #0 /var/www/docker-aio/php/vendor/guzzlehttp/guzzle/src/Middleware.php(69): GuzzleHttp\Exception\RequestException::create(Object(GuzzleHttp\Psr7\Request), Object(GuzzleHttp\Psr7\Response), NULL, Array, NULL)
#1 /var/www/docker-aio/php/vendor/guzzlehttp/promises/src/Promise.php(204): GuzzleHttp\Middleware::GuzzleHttp\{closure}(Object(GuzzleHttp\Psr7\Response))
#2 /var/www/docker-aio/php/vendor/guzzlehttp/promises/src/Promise.php(153): GuzzleHttp\Promise\Promise::callHandler(1, Object(GuzzleHttp\Psr7\Response), NULL)
#3 /var/www/docker-aio/php/vendor/guzzlehttp/promises/src/TaskQueue.php(48): GuzzleHttp\Promise\Promise::GuzzleHttp\Promise\{closure}()
#4 /var/www/docker-aio/php/vendor/guzzlehttp/promises/src/Promise.php(248): GuzzleHttp\Promise\TaskQueue->run(true)
#5 /var/www/docker-aio/php/vendor/guzzlehttp/promises/src/Promise.php(224): GuzzleHttp\Promise\Promise->invokeWaitFn()
#6 /var/www/docker-aio/php/vendor/guzzlehttp/promises/src/Promise.php(269): GuzzleHttp\Promise\Promise->waitIfPending()
#7 /var/www/docker-aio/php/vendor/guzzlehttp/promises/src/Promise.php(226): GuzzleHttp\Promise\Promise->invokeWaitList()
#8 /var/www/docker-aio/php/vendor/guzzlehttp/promises/src/Promise.php(62): GuzzleHttp\Promise\Promise->waitIfPending()
#9 /var/www/docker-aio/php/vendor/guzzlehttp/guzzle/src/Client.php(187): GuzzleHttp\Promise\Promise->wait()
#10 /var/www/docker-aio/php/vendor/guzzlehttp/guzzle/src/ClientTrait.php(95): GuzzleHttp\Client->request('POST', 'http://localhos...', Array)
#11 /var/www/docker-aio/php/src/Docker/DockerActionManager.php(182): GuzzleHttp\Client->post('http://localhos...')
#12 /var/www/docker-aio/php/src/Controller/DockerController.php(48): AIO\Docker\DockerActionManager->StartContainer(Object(AIO\Container\Container))
#13 /var/www/docker-aio/php/src/Controller/DockerController.php(142): AIO\Controller\DockerController->PerformRecursiveContainerStart('nextcloud-aio-b...')
#14 /var/www/docker-aio/php/vendor/slim/slim/Slim/Handlers/Strategies/RequestResponse.php(38): AIO\Controller\DockerController->StartBackupContainerTest(Object(GuzzleHttp\Psr7\ServerRequest), Object(GuzzleHttp\Psr7\Response), Array)
#15 /var/www/docker-aio/php/vendor/slim/slim/Slim/Routing/Route.php(358): Slim\Handlers\Strategies\RequestResponse->__invoke(Array, Object(GuzzleHttp\Psr7\ServerRequest), Object(GuzzleHttp\Psr7\Response), Array)
#16 /var/www/docker-aio/php/vendor/slim/slim/Slim/MiddlewareDispatcher.php(65): Slim\Routing\Route->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#17 /var/www/docker-aio/php/vendor/slim/slim/Slim/MiddlewareDispatcher.php(65): Slim\MiddlewareDispatcher->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#18 /var/www/docker-aio/php/vendor/slim/slim/Slim/Routing/Route.php(315): Slim\MiddlewareDispatcher->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#19 /var/www/docker-aio/php/vendor/slim/slim/Slim/Routing/RouteRunner.php(68): Slim\Routing\Route->run(Object(GuzzleHttp\Psr7\ServerRequest))
#20 /var/www/docker-aio/php/vendor/slim/csrf/src/Guard.php(476): Slim\Routing\RouteRunner->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#21 /var/www/docker-aio/php/vendor/slim/slim/Slim/MiddlewareDispatcher.php(168): Slim\Csrf\Guard->process(Object(GuzzleHttp\Psr7\ServerRequest), Object(Slim\Routing\RouteRunner))
#22 /var/www/docker-aio/php/vendor/slim/twig-view/src/TwigMiddleware.php(115): Psr\Http\Server\RequestHandlerInterface@anonymous->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#23 /var/www/docker-aio/php/vendor/slim/slim/Slim/MiddlewareDispatcher.php(121): Slim\Views\TwigMiddleware->process(Object(GuzzleHttp\Psr7\ServerRequest), Object(Psr\Http\Server\RequestHandlerInterface@anonymous))
#24 /var/www/docker-aio/php/src/Middleware/AuthMiddleware.php(38): Psr\Http\Server\RequestHandlerInterface@anonymous->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#25 /var/www/docker-aio/php/vendor/slim/slim/Slim/MiddlewareDispatcher.php(269): AIO\Middleware\AuthMiddleware->__invoke(Object(GuzzleHttp\Psr7\ServerRequest), Object(Psr\Http\Server\RequestHandlerInterface@anonymous))
#26 /var/www/docker-aio/php/vendor/slim/slim/Slim/Middleware/ErrorMiddleware.php(76): Psr\Http\Server\RequestHandlerInterface@anonymous->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#27 /var/www/docker-aio/php/vendor/slim/slim/Slim/MiddlewareDispatcher.php(121): Slim\Middleware\ErrorMiddleware->process(Object(GuzzleHttp\Psr7\ServerRequest), Object(Psr\Http\Server\RequestHandlerInterface@anonymous))
#28 /var/www/docker-aio/php/vendor/slim/slim/Slim/MiddlewareDispatcher.php(65): Psr\Http\Server\RequestHandlerInterface@anonymous->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#29 /var/www/docker-aio/php/vendor/slim/slim/Slim/App.php(199): Slim\MiddlewareDispatcher->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#30 /var/www/docker-aio/php/vendor/slim/slim/Slim/App.php(183): Slim\App->handle(Object(GuzzleHttp\Psr7\ServerRequest))
#31 /var/www/docker-aio/php/public/index.php(180): Slim\App->run()
#32 {main}

The output of your /var/log/apache2/error.log in mastercontainer:

[Wed May 31 16:04:40.599494 2023] [ssl:warn] [pid 115:tid 140085637868360] AH01906: localhost:8080:0 server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Wed May 31 16:04:40.599582 2023] [ssl:warn] [pid 115:tid 140085637868360] AH01909: localhost:8080:0 server certificate does NOT include an ID which matches the server name
[Wed May 31 16:04:40.609017 2023] [lbmethod_heartbeat:notice] [pid 115:tid 140085637868360] AH02282: No slotmem from mod_heartmonitor
[Wed May 31 16:04:40.609064 2023] [ssl:warn] [pid 115:tid 140085637868360] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Wed May 31 16:04:40.612425 2023] [ssl:warn] [pid 115:tid 140085637868360] AH01906: localhost:8080:0 server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Wed May 31 16:04:40.612473 2023] [ssl:warn] [pid 115:tid 140085637868360] AH01909: localhost:8080:0 server certificate does NOT include an ID which matches the server name
[Wed May 31 16:04:40.615099 2023] [mpm_event:notice] [pid 115:tid 140085637868360] AH00489: Apache/2.4.57 (Unix) OpenSSL/3.0.8 configured -- resuming normal operations
[Wed May 31 16:04:40.615161 2023] [core:notice] [pid 115:tid 140085637868360] AH00094:

The hostname of both machines are the same, and the domain didn’t change. Also forwarded ports 80 and 443 to the new machine.

Flappy · May 31, 2023, 4:30pm

Just found the solution. FUSE support must be enabled in the kernel.

topsrek · June 28, 2023, 10:55pm

Thank you!
If you are like me, running Docker inside a CT container on Proxmox, enable FUSE under the container’s Options → Features.

After encountering other problems, I can savely recommend: Start from scratch with the docker-compose again