mergerfs usage method

porting progress to OMV 6.x (done)

Can the new openmediavault-mergerfs plugin be used to merge folders on disks ?

Like how the omv5 mergerfolders plugin worked.

Zitat von gderf

Yes

Any guide for setting it up?

Zitat von gderf

fstab years ago

I hear ya.

But just done a omv5 to omv6 upgrade and had a motherbard or cpu failure during the upgrade.

Long story short, got the os running again with new mb and cpu, and a big help from ryecoaaron.

Then tried to reconfigure the new mergerfs plugin to suit my original docker containers and vm's configurations with some symlinks to look like the old folder paths.

Then had a disk fail that was in the mergerfs pool, and then that killed the upgraded os, merger disk/folder system seems fragile to disk failures.

So now I've done a fresh install of omv6 and re-configuring everything, oh what fun.

The strange bit I don't get is the new path to the mergerfs file system, it use to be /srv/mfsp/shared_folders now it's /srv/mergerfs/mfsp/mfsp/shared_folders (mfsp being my mergerfs pool name and the common folder name on each disk to merge).

Anyway, back to home labbing... I have ranted enough for a Saturday night.

Zitat von ryecoaaron

I changed the mountpoint

No problems with the /srv/mergerfs bit.

It's more the duplication of the mfsp part, ie /srv/mergerfs/mfsp/mfsp/shared_folders.

When creating a share (OMV, Storage, Shared Folders, Create) of an existing folder within my existing merged disks/folders, I have to add mfsp to the relative path ie mfsp/shared_folder/

It's not a biggy, I just hadn't relalised there had been a change from the mergerfolder plugin to the mergerfs plugin.

But I'm all over it now

Attached some pics from Webmin File Manager of what my backup folder share looks like.

Zitat von ryecoaaron

not sure why you have to do that

I would guess it's the difference between merging disks and merging folders.

As I am merging folders it is adding in the merged folder name also.

ie /srv/mergerfs/mergerfs_pool_name/my_merged_folder_name/share

I'd guess if I was doing merged disks, I guess it would be /srv/mergerfs/mergerfs_pool_name/share

In the previous pic named OMV-Storage-Shared_Folders.png, is my configuration correct for merging folders?

All my merged shares are working, but was just checking if this is the best way of configuring mergerfs?

Zitat von ryecoaaron

pool config

pool config = OMV-Storage-mergerfs.png

share config = OMV-Storage-Shared_Folders.png

Zitat von ryecoaaron

Your paths are relative without a leading slash

Sorry, I forgot to mention the symlinks.

In the OMV-Storage-mergerfs.png where it reads

srv/d01

srv/d02

etc

They are symlinks to each disk, then on each disk is a folder called mfsp.

Zitat von ryecoaaron

change your pool to /srv/d*/mfsp

no way, that's 2 cool

The reason I have the mergerfs pool is to swap disks frequently (testing and playing around shit).

I keep getting larger disks from our data centre, next week I'll have 18 x 8TB disks (I have no idea why, apart from cause I can).

Now all I need to do is restart the pool, way too easy.

Thanks ryecoaaron

Still having permission problems with nfs shares.

I've tried the Reset Permissions, with option Admin-read/write, users-read/write, others-no access, clear ACLs, no change.

Have I got these permissions right?

/srv (0755)/mergerfs (0777)/mfsp (2770)/nfssharedfolder (2770)

OMV, Services, NFS, Shares are configured to allow clients 192.168.1.0/24 and Read/Write privilege, as per attached nfs share.png

OMV, Storage, Shared Folders, Privileges are as per attached OMV-Storage-Shared_Folders-Privileges.png

From a linux laptop cli using (firewall is off)

sudo mount -t nfs omv-server-ip:/nfssharedfolder /home/username/mountpoint

I get the following error message

mount.nfs: access denied by server while mounting omv-server-ip:/nfssharedfolder

What am I over looking here?

Zitat von ryecoaaron

change the two directories temporarily from 2770 to 2775, does it work?

Changed

/srv (0755)/mergerfs (0777)/mfsp (2770)/nfssharedfolder (2770)

to

/srv (0755)/mergerfs (0777)/mfsp (2775)/nfssharedfolder (2775) also tried /nfssharedfolder (2777)

still getting

mount.nfs: access denied by server while mounting omv-server-ip:/nfssharedfolder

omv user id u1 = uid=1000(u1) gid=100(users) groups=100(users),1000(RW)

laptop user id u1 = uid=1000(u1) gid=1000(u1) groups=1000(u1),4(adm),20(dialout),21(fax),24(cdrom),25(floppy),26(tape),27(sudo),29(audio),30(dip),44(video),46(plugdev),100(users),109(netdev),114(lpadmin),121(bluetooth),123(scanner),133(sambashare)

$ sudo showmount -e omv-server-ip

[sudo] password for u1:

Export list for omv-server-ip:

/export 192.168.1.0/24

/export/nfssharedfolder 192.168.1.0/24

$ sudo mount -t nfs omv-server-ip:/export/nfssharefolder /home/u1/NFS/nfssharefolder

mount.nfs: mounting omv-server-ip:/export/nfssharefolder failed, reason given by server: No such file or directory

Ignore this reply, I done a typo in the path. nfssharefolder -> nfssharedfolder (I left the d out of shared)

sudo mount -t nfs omv-server-ip:/export/nfssharedfolder /home/u1/NFS/nfssharefolder

works good

Thanks ryecoaaron

Is having the /export in the path a new thing to omv6 ?

I didn't use /export in the path with omv5.