[ZFS plugin for unRAID]

1 hour ago, BasWeg said:

For me it is the same. Only zfs. I hope I can leave it as it is. 

The thing is that we are not making any changes just shipping ZFS 2.1 by default. We have shipped 2.0 by default until now because of this deadlock problem, and 2.1 if you enabled "unstable builds" (see the first post).

 

ZFS 2.0 only supports kernels 3.10 - 5.10, but unRAID 6.10 will ship with (at least) kernel 5.13.8 therefore we have to upgrade to ZFS 2.1

 

So if you are running ZFS 2.1 now on 6.9.2 or 6.10.0-rc1 there wont be any changes:

 

You can check what version is running i two ways:

root@Tower:~# dmesg | grep -i zfs
[   69.055201] ZFS: Loaded module v2.1.0-1, ZFS pool version 5000, ZFS filesystem version 5
[   70.692637] WARNING: ignoring tunable zfs_arc_max (using 2067378176 instead)

root@Tower:~# cat /sys/module/zfs/version
2.1.0-1

 

[ZFS plugin for unRAID]

Great video:

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[ZFS plugin for unRAID]

1 hour ago, Arragon said:

Can't find "Plugin Update Helper"  in the apps tab.  Is it not available in 6.9.2?  Is it sufficient to change the location or do I have to move the docker.img file first?

The plugin update helper does not add itself in the apps tab. When you install/upgrade the ZFS plugin the update helper is bundled with and watches for upgrades to unRAID. 

 

Good question, i personally just changed to location and rebuilt my docker.img, but you could also disable docker, move the file, change the location and then enable docker again. Just be sure to have the Community apps plugin installed so you can easily go to Apps->"previous apps" and re-install all your dockers, while keeping your settings:

[ZFS plugin for unRAID]

The plugin has been updated with the "Plugin Update Helper" from @ich777

 

It basically sanity checks and pre-grabs the needed files for ZFS when you are updating unRAID. If there would be any problems the plugin would let you know so you dont reboot and lose ZFS support.

 

This with the automatic builds from @ich777 I think ZFS on unRAID is as good as it gets before, we get native support.

 

Heads up for using ZFS with Docker. Starting with unRAID 6.10.0 we are shipping ZFS 2.1 which has a issue for some users with storing docker.img on a ZFS pool. This does not affect the appdata, but only the docker.img file. I recommend storing docker.img on your cache disk if you run into any problems, as it does not contain any critical information and can be easily recreated. 

 

 

[ZFS plugin for unRAID]

Not claiming to have it setup properly (I think docker still puts something on the unraid array due to btrfs vDisk setting) - but here's my setup.  Both dockers & docker.img are on a zfs dataset & running fine with snapshots.  
 
Our setups look very similar, so the only thing I remember having to fix when I initially moved it was to delete the docker.img & let it rebuild itself - got the fix here.
 

The problem is with using a newer version of zfs than 2.0.0. I tried saving the img file on ZFS (2.0.4) and both btrfs and xfs locked up the system. Something to do with the loopback mount. Too bad I could not use the folder mapping and I always got an error that Docker service could not be started.

I moved the docker.img to my cache drive and I don’t care too much since it’s disposable. I think I will make latest zfs the default for the next upgrade to unRaid and add a disclaimer that you cannot save the docker.img on ZFS if the problem will still be present.


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[ZFS plugin for unRAID]

Snapshots for VMs:
Better to perform in running mode (online) or stopped mode (offline)?

Just set up automatic snapshots using something like Sanoid on the running vms. https://forums.unraid.net/topic/94549-sanoidsyncoid-zfs-snapshots-and-replication/

Of course it’s always better to turn off the VM if you are doing something like a migration.


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[ZFS plugin for unRAID]

On 3/26/2021 at 7:18 AM, glennv said:

Why havent you moved yet to hosting docker in a folder on zfs instead of hosting a docker image on top of zfs ?
I moved to it last week and works fine and dont have to worrie about a docker.img file anymore.
Its also more transparent as you can just browse the content of all images etc etc.

I was trying this on my server, but the Docker service would not start when I pointed the Docker data-root to a folder on ZFS. Worked fine using folders on Btrfs/Xfs formatted drives.

[ZFS plugin for unRAID]

Builds for 6.9.2 have been added (2.0.0 and 2.0.4 if you have enabled "unstable" builds) 

 

Thanks to @ich777 the process is now automated! When a new unRAID version is released ZFS is built and uploaded automatically. Thanks a lot to @ich777 for this awesome addition!

[ZFS plugin for unRAID]

Hello there !
 
i use ZFS on Unraid  (on my Backupserver) for a long time.
As this is "just" a Backup it is not powered on all the time, so the tools provided by Steini84 ( Thank you Steini !)
for snapshots etc. are super easy and nice but not what suits my goal ...
 
So i came across this very promising scripts:
ZFSBUD: SIMPLE ZFS SNAPSHOTTING, REPLICATING & BACKUP ROTATING CONVENIENCE BASH SCRIPT
and 
UNLOCK AND MOUNT SEVERAL ZFS DATASETS ON BOOT WITH SINGLE PASSPHRASE 
both can by found here : gbyte Blog
 
i tries to use them via "User Scripts" but failed ...
 
I am praying that some can help me to get this super nice and convenient scripts working in my Unraid Boxes
As i am just a "user" not a script guy
 
-- hopefully posted in the right place 
 
regards from Osnabrück / Germany
 
 

Check this out. I love it for snapshots and replication

https://forums.unraid.net/topic/94549-sanoidsyncoid-zfs-snapshots-and-replication/

[ZFS plugin for unRAID]

3 hours ago, fxhe said:

Does the plugin not be supported by 6.8.1 UNRAID?

 

There are packages going back to 6.1.2 so 6.8.1  is definitely supported. Are you maybe on an old beta or RC? 

In any case I would just update to 6.9 just for fun I installed 6.8.1 and it worked 

[ZFS plugin for unRAID]

47 minutes ago, OneMeanRabbit said:

Read through this topic many times, and THANK you for your amazing work!  QQ - how did you deploy this?  Docker?

Awesome, great to hear

 

Here are the relevant parts from the docker setup, but take note that I have not updated to check_mk 2.0 - a good weekend project for me

checkmk/check-mk-raw:1.6.0-latest
https://hub.docker.com/r/checkmk/check-mk-raw
https://checkmk.com/application/files/2715/9834/3872/checkmk_icon_neg_v2.png
http://[IP]:[PORT:5000]/cmk/check_mk/
--ulimit nofile=1024 --tmpfs /opt/omd/sites/cmk/tmp:uid=1000,gid=1000

 

[ZFS plugin for unRAID]

Added a build of ZFS 2.0.4 for 6.9.1 for those who are using unstable

[ZFS plugin for unRAID]

You won't get spindown with zfs. It's a striped filesystem and you have to read/write from all the disks at once


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[ZFS plugin for unRAID]

Yes it's still the same


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[ZFS plugin for unRAID]

Added ZFS 2.0.0 for unRAID 6.9.1.
Also 2.0.3 in the "Unstable" folder you can manually enable

[ZFS plugin for unRAID]

34 minutes ago, Arragon said:

Still running into the same problem with Docker.  How can I go back to 2.0.0?

Did you try the new bind-mount to a directory that was added? In any case I moved 2.0.3 to unstable and added a 2.0.0. build instead (thanks ich777)

 

You can move to 2.0.0. by deleting the 2.0.3 package and reboot:

rm /boot/config/plugins/unRAID6-ZFS/packages/*

 

[ZFS plugin for unRAID]

Added ZFS v2.0.0 build for 6.9.0 stable (2.0.3 in the unstable folder)

Added ZFS v2.0.3 build for 6.9.0 stable

This hopefully fixes the problems with docker.img and zfs 2.0.1+ :

".. we added the ability to bind-mount a directory instead of using a loopback. If file name does not end with .img then code assumes this is the name of directory (presumably on a share) which is bind-mounted onto /var/lib/docker. For example, if /mnt/user/system/docker/docker then we first create, if necessary the directory /mnt/user/system/docker/docker. If this path is on a user share we then "de-reference" the path to get the disk path which is then bind-mounted onto /var/lib/docker. For example, if /mnt/user/system/docker/docker is on "disk1", then we would bind-mount /mnt/disk1/system/docker/docker. "


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[ZFS plugin for unRAID]

Also, I think it would be a good idea to keep zfs > 2.0.1 out of main until this is resolved?

Done. You can still use it by enabling unstable builds


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[ZFS plugin for unRAID]

ZFS v2.0.3 built for Unraid 6.9.0-rc2 (Kernel v5.10.1)

It is in the main folder so be adviced if there are still problems with having docker.img on zfs: 

On 2/2/2021 at 10:50 AM, Joly0 said:

look for the storage path of the docker.img and the suggestion to put that on another array other then the zfs one.

 

[ZFS plugin for unRAID]

I have uploaded a zfs 2.0.2 build for 6.9.0-rc2 but since there have been some reports of errors with the 2.0.1 builds I put it in the unstable folder. 

@Marshalleq maybe you can let us know if the problem has been fixed in 2.0.2?

[ZnapZend plugin for unRAID]

Yeah this should do the trick: 

znapzend --debug --logto=/var/log/znapzend.log --daemonize

 

I also want to let you know that I was using znapsend and ran in to some problems, for example after changing datasets. I moved over to Sanoid/Syncoid and have not had a single problem since. 

 

Not saying that one solution is better than the other, but that was my experience and I would reccomend that you check it out

[ZFS plugin for unRAID]

8 hours ago, Xbgt1 said:

Please fix this typo for the next guy

Its done, thanks

[ZFS plugin for unRAID]

I have moved the 2.0.1 builds to the unstable folder for now. 

 

#Enable unstable builds
touch /boot/config/plugins/unRAID6-ZFS/USE_UNSTABLE_BUILDS
rm /boot/config/plugins/unRAID6-ZFS/packages/*
#Then reboot

#Disable unstable builds
rm /boot/config/plugins/unRAID6-ZFS/USE_UNSTABLE_BUILDS
rm /boot/config/plugins/unRAID6-ZFS/packages/*
#Then reboot

 

Please let us know if you are running 2.0.1 without issues and better yet if the conflict reported by Marshalleq has been identified / resolved

 

[ZFS plugin for unRAID]

Hi everyone!
 
A newbie question. How do i add an unraid share which is located on my created zfs pool?
When adding share, all i can see is my dummy array disk...

You can use smb-extras.conf


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[ZFS plugin for unRAID]

I tried on both 6.9.0-rc2 & 6.8.3 and get the right version after a reboot.
I have only ran it on my test server and have not seen anything strange. But to be honest I only run zfs on that install and nothing else going on there.


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