USB Backup and AUFS/MHDDFS does not work

frotzamuta · Apr 10th 2015

Hi,

I just moved from a windows server to OMV with a mhddfs storage pool.
I wanted to use the USB Backup Plugin but it figured out that it has problems with the mhddfs filesystem.

When I try to add a USB Backup job I get following error message

Code

Filesystem '/media/d65835cf-c3d2-4254-88ac-c350949e4e52' not found


Fehler #6000:
exception 'OMVException' with message 'Filesystem '/media/d65835cf-c3d2-4254-88ac-c350949e4e52' not found' in /usr/share/openmediavault/engined/rpc/usbbackup.inc:82
Stack trace:
#0 [internal function]: OMVRpcServiceUsbBackup->getCandidates(Array, Array)
#1 /usr/share/php/openmediavault/rpcservice.inc(125): call_user_func_array(Array, Array)
#2 /usr/share/php/openmediavault/rpc.inc(79): OMVRpcServiceAbstract->callMethod('getCandidates', Array, Array)
#3 /usr/sbin/omv-engined(500): OMVRpc::exec('UsbBackup', 'getCandidates', Array, Array, 1)
#4 {main}

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Your support is highly appreciated

Regards
Frotza

ryecoaaron · Apr 10th 2015

I can replicate this. @HK-47 is this a bug in the unionfs backend or the usbbackup code?

frotzamuta · Apr 10th 2015

Thanks for the check. I hope there will be a fix

HK-47 · Apr 10th 2015

It's not a bug. As I understand it you're trying to backup to an/a aufs/mhddfs drive. The usbbackup plugin works with single drives and real filesystems. Aufs/mhddfs is not a "real" filesystem and works on two drives or more. I have no way (as far as I know) too hide the unionfilesystems in the usbbackup plugin but they would be hidden if we could.

frotzamuta · Apr 10th 2015

No, you understood it wrong...

Source is a Shared folder on a pool
Target will be a single USB/SATA drive

When I klick add the error message mentioned above appears. I can klick OK and choose the shared folder I want to backup (it is located in a pool). Then I want to choose the target and the message appears again and the target dropdown remains empty.

ryecoaaron · Apr 10th 2015

It causes the usb plugin to not work at all though even if you don't want to use a pool. It fails on this command - $fs = new OMVFilesystem($objectv['devicefile']); So, it must not like the devicefile entry it is getting.

HK-47 · Apr 10th 2015

I understand. I tracked it down and couldn't figure out why OMVFilesystemUnion::exists always returned false but it turned out to be a bug in usbbackup. But even if that bug is fixed it will not work since it will just fail with the next statement. Asked Volker about it to see if it can be fixed.

frotzamuta · Apr 21st 2015

Hi,
any news for me?

ryecoaaron · Apr 21st 2015

The bug is fixed but not released. Couldn't find the commit though.

frotzamuta · Apr 26th 2015

1.4 solved the issue.
Big THANKS!

USB Backup and AUFS/MHDDFS does not work

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