MergerFs - omv5

ajaja · 23. Oktober 2019

Zitat von ryecoaaron

The OMV 5.x version of the plugin has plenty of issues. They are being worked on.

I really don't think manually configuring pools/fstab is the right option for most users. The fact that it is still not working well on OMV 5.x shouldn't be a huge issue since OMV 5.x hasn't been released. I don't what else to say about that. And once we get the plugin to a good state, I will add the damn option to pool folders instead of just disks...

ryecoaaron, the Unionfilesystem plugin pretty much holds all my stuff together; I am not skilled enough to be comfortable configuring MergerFs via fstab. Has the progress broug a usable solution for the rest of us? If this is still a future todo, where might I find out when the plugin is in a good state?

Thanks

gderf · 23. Oktober 2019

Zitat von ajaja

I am not skilled enough to be comfortable configuring MergerFs via fstab.

Did you know that the plugin writes its output to fstab? Between those examples and the manual you should be able to figure it out.

ajaja · 24. Oktober 2019

Zitat von gderf

Did you know that the plugin writes its output to fstab? Between those examples and the manual you should be able to figure it out.

Are you aware that that does not answer my question?

crashtest · 24. Oktober 2019

Zitat von ajaja

Are you aware that that does not answer my question?

It might help if you closely defined your question.

- Have you loaded OMV5 (and) are using MergerFS in OMV5.
- Are you having some sort of trouble?
- What, exactly is the problem?

With a few details, I might be able to replicate the problem you're experiencing in a VM. Absent that information, there's little that can be done.

geaves · 24. Oktober 2019

Does the current MergerFS plugin not work in OMV5 then? or is it just the request to pool folders rather than whole drives that requires implementation.

ajaja · 24. Oktober 2019

Zitat von crashtest

It might help if you closely defined your question.
- Have you loaded OMV5 (and) are using MergerFS in OMV5.
- Are you having some sort of trouble?
- What, exactly is the problem?

With a few details, I might be able to replicate the problem you're experiencing in a VM. Absent that information, there's little that can be done.

What do you mean by, "closely defined your question"?

crashtest · 24. Oktober 2019

Zitat von ajaja

ryecoaaron, the Unionfilesystem plugin pretty much holds all my stuff together; I am not skilled enough to be comfortable configuring MergerFs via fstab. Has the progress broug a usable solution for the rest of us? If this is still a future todo, where might I find out when the plugin is in a good state?
Thanks

I've been using MergerFS + SNAPRAID in OMV4 without problems. If you're having some sort of problem with MergerFS in OMV4, please describe it.

Since OMV5 is still a beta, and ryecoaaron has acknowledged issues with using MergerFS in the OMV5 release, it would be best to stay on OMV4 until it's fixed. Even when OMV5 is out of beta, I'm still going to test everything I use, in a VM, before upgrading. That seems to be the prudent course to take.

ryecoaaron · 24. Oktober 2019

Zitat von geaves

Does the current MergerFS plugin not work in OMV5 then?

It works but sometimes a reboot is needed to get the pool mounted. I haven't put a lot of time into it but I haven't found a solution for this yet. This only affect new pool creation and isn't a huge problem in my opinion.

Zitat von geaves

is it just the request to pool folders rather than whole drives that requires implementation.

Yes, pooling folders needs to be implemented.

crashtest · 24. Oktober 2019

Zitat von ryecoaaron

It works but sometimes a reboot is needed to get the pool mounted. I haven't put a lot of time into it but I haven't found a solution for this yet. This only affect new pool creation and isn't a huge problem in my opinion.

How about a popup that says, "Reboot Required", when a new configuration is saved? The user is notified of the issue and the solution all in one, and it's done.

ryecoaaron · 25. Oktober 2019

Zitat von crashtest

How about a popup that says, "Reboot Required", when a new configuration is saved? The user is notified of the issue and the solution all in one, and it's done

If it actually required a reboot to setup a pool, I would go for that. I really just need some time to figure out what is wrong.

foxy82 · 26. Oktober 2019

Code

root@openmediavault:/srv# grep fuse /etc/fstab
/srv/dev-disk-by-id-ata-WDC_WD15EADS-00P8B0_WD-WMAVU0832198-part1:/srv/dev-disk-by-id-ata-MAXTOR_STM3250310AS_6RY3A9KZ-part1            /srv/c4c6c5b1-76df-4fe0-b6e9-dee25caea041       fuse.mergerfs defaults,allow_other,direct_io,use_ino,category.create=epmfs,minfreespace=4G    0 0
root@openmediavault:/srv# ls -alth /srv
ls: cannot access '/srv/c4c6c5b1-76df-4fe0-b6e9-dee25caea041': No such file or directory
ls: cannot access '/srv/897fdf50-46e0-4ec1-8542-470409a78b1e': No such file or directory
total 56K
drwxr-xr-x 10 root root    4.0K Oct 26 06:27 .
drwxr-xr-x  4 root root    4.0K Oct 26 06:24 dev-disk-by-id-ata-MAXTOR_STM3250310AS_6RY3A9KZ-part1
drwxr-xr-x  1 root root      74 Oct 24 16:00 dev-disk-by-id-ata-WDC_WD15EADS-00P8B0_WD-WMAVU0832198-part1
drwxr-xr-x  1 root root      30 Oct 24 16:00 dev-disk-by-id-ata-WDC_WD15EADS-00P8B0_WD-WMAVU0114055-part1
drwxrwxr-x 20 root root    4.0K Oct 21 17:39 ..
drwxr-xr-x  5 root root    4.0K Oct 21 17:26 salt
drwxr-xr-x  3 root root    4.0K Oct 21 17:26 pillar
drwxr-xr-x  2 ftp  nogroup 4.0K Oct 21 17:26 ftp
d?????????  ? ?    ?          ?            ? 897fdf50-46e0-4ec1-8542-470409a78b1e
d?????????  ? ?    ?          ?            ? c4c6c5b1-76df-4fe0-b6e9-dee25caea041

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So I've just started using openmediavault - from the website it wasn't very obvious that OMV5 is BETA so I just picked the newest release. I'm getting a similar issue with the mergefs filesystem and looking in fstab and /srv I can see the above.

Looks like the mount point hasn't been created correctly? I then unmounted it and then ran mount -a and it now looks like this and it works.

Code

root@openmediavault:/srv# ls -alth
total 80K
drwxr-xr-x  1 root root      86 Oct 26 06:47 c4c6c5b1-76df-4fe0-b6e9-dee25caea041
drwxr-xr-x  1 root root      86 Oct 26 06:47 dev-disk-by-id-ata-WDC_WD15EADS-00P8B0_WD-WMAVU0832198-part1
drwxr-xr-x 11 root root    4.0K Oct 26 06:43 .
drwxr-xr-x  2 root root    4.0K Oct 26 06:43 pool
drwxr-xr-x  4 root root    4.0K Oct 26 06:24 dev-disk-by-id-ata-MAXTOR_STM3250310AS_6RY3A9KZ-part1
drwxrwxrwx  2 root root    4.0K Oct 25 07:08 897fdf50-46e0-4ec1-8542-470409a78b1e
drwxr-xr-x  1 root root      30 Oct 24 16:00 dev-disk-by-id-ata-WDC_WD15EADS-00P8B0_WD-WMAVU0114055-part1
drwxrwxr-x 20 root root    4.0K Oct 21 17:39 ..
drwxr-xr-x  5 root root    4.0K Oct 21 17:26 salt
drwxr-xr-x  3 root root    4.0K Oct 21 17:26 pillar
drwxr-xr-x  2 ftp  nogroup 4.0K Oct 21 17:26 ftp

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Hope that helps in some way although I suspect you already know what i've found.

ryecoaaron · 26. Oktober 2019

Zitat von foxy82

Looks like the mount point hasn't been created correctly? I then unmounted it and then ran mount -a and it now looks like this and it works.

And this is why the reboot I mentioned above fixes it. The problem with the plugin is known and it is a race condition where it actually mounts the pool THEN creates the directory. Unmounting the pool allows the directory to be seen. I just need the plugin to make sure the directory is created but I haven't found the solution (need more free time).

ajaja · 26. Oktober 2019

Zitat von crashtest

I've been using MergerFS + SNAPRAID in OMV4 without problems. If you're having some sort of problem with MergerFS in OMV4, please describe it.

If someone is looking for help with MergerFS on the released OMV4, please realize this thread is tagged for the beta OMV5. These OMV5 threads are for clearing issues with upcoming OS. They are also for consuming ALL free time of the developers --- thank you.

ryecoaaron · 17. November 2019

I think the unionfilesystem plugin issue with mounting the pool on creation has been fixed in 5.0.1 in the repo now.

Version	7.0-32 (Sandworm)
Processor	AMD EPYC 7302P 16-Core Processor
Kernel	Linux 6.1.15-1-pve
Hardware	Dell R7515

Version	7.0-32 (Sandworm)
Processor	AMD EPYC 7302P 16-Core Processor
Kernel	Linux 6.1.15-1-pve
Hardware	Dell R7515

Version	7.0-32 (Sandworm)
Processor	AMD EPYC 7302P 16-Core Processor
Kernel	Linux 6.1.15-1-pve
Hardware	Dell R7515

Version	7.0-32 (Sandworm)
Processor	AMD EPYC 7302P 16-Core Processor
Kernel	Linux 6.1.15-1-pve
Hardware	Dell R7515

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