[HOWTO] Instal ZFS-Plugin & use ZFS on OMV

Zitat von ryecoaaron

Yep. Click on the install backports kernel button in omv-extras to install the headers.

Ah, I did this manually. That's why I didn't have the headers.

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After vm test and a new try with omv is running now. I think the first sequence install of plugins going wrong and i have testet one time the proxmox kernel. i read here later the kernel is not ready to use. to late for me ^^. many erros and problems with booting came at this point.
anyway now is all fine.

my feedback to the "old" dnsmasq plugin is: was running very well with pxe & Co.

I just made a clean OMV3 install, and managed to get ZFS up and running again after installing backports kernel in OMV extras. But my "Detail" window for my ZFS-pools are light grey / low contrast (other windows in the web-gui show correct contrast, and so did this window when I had OMV2 installed).

Couldn't find anyone else asking about this before; is this normal or is there anything I can do?

I see, thanks!

Zitat von ryecoaaron

The textarea is read only now. The color changed in OMV 3.x. You probably could change the css color by creating /var/www/openmediavault/css/omv-custom.css

Any example of this would be appreciated. (No knowledge about css).
Thanks

Thanks for the css example.

This way, text can be read.

Zitat von ryecoaaron

I need feedback on the new OMV 3.x version - get it here

Aaron, this made my whole week. I'd already given up, moved my Pi over to OMV 3.x, and just manually stole the config files configured to match from the old 2.x install so I could get remote-mount plugin.

I'm currently away from home visiting my parents, but as soon as I get home tomorrow afternoon I will install the plugin and give feedback if you still need it.

Thanks!

Just had an interesting moment. I had updated the kernel with the updates and done a reboot. After I came back up I had spl 0.6.5.8-3~bpo8+1 and spl-dkms 0.6.5.8-3~bpo8+1 waiting as updates, probably because of the new kernel release. When I go to install them, I get an error on spl-dkms:

Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:


The following packages have unmet dependencies:
 spl-dkms : Depends: dkms (> 2.2.1.0) but 2.2.0.3-2 is to be installed
E: Unable to correct problems, you have held broken packages.

Note that there is no 2.2.1.0 available in Jessie, but Jessie Backports has dkms 2.3-2~bpo8+1. I was able to install it with sudo apt-get install -t jessie-backports dkms, and afterwards the upgrades went through for spl and spl-dkms.

So, head's up folks, if you update and start getting errors on DKMS, you need to install the backports version. Also, at the moment (and that may just be a matter of time) that puts the spl and spl-dkms packages at a newer rev than the zfs-dkms packages. No ill effects though, everything's running fine here.

thanx to hint from wolffstarr - was just updating and got same error.
Hope that some time zfs install/upgrade could get more mature.

super. thanx ryecoaaron.

I have now completely switched from RAID5 to ZFS on all online and backup servers - no issues since 5 weeks. Very efficient. To backup the online servers which contain different ZFS data sets, I am using ZREP - ZFS replication and failover script. The backup servers are wake up every night using wol from the router then zrep is called via cron from the backup server to replicate changed data on the online servers to the zfs backup servers.
example cron from backup server: ssh <name of zfs server> zrep sync <zfs volume>/<data set>
This generates consistent snaphots on both servers with option of fail over switching

Next step is to investigate the handling of the backups e.g via zfsbackup – ZFS backup handling to keep the backups similar to rsnapshot which I used before in Raid5 environments

And yet again, many thanks @ryecoaaron

Zitat von luxflow

@polarstern

1. rm /var/lib/openmediavault/dirtymodules.json
2. ZFS->Settings
Disable `Enable Automatic Sharing of Nested Properties`
(currently it seems `Enable Automatic Sharing of Nested Properties` doesn't work as expected so disable it)

try above procedures

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@luxflow, this had fixed the problem for me a couple of weeks back as well. However, I just went in and added a new zpool via the plugin, and the issue returned. Same steps fixed it - actually, I'm not even sure that disabling the Nested Properties bit is actually necessary - but the fact that it came back makes me think there's an underlying issue.

I remember something like this happening in the past, but I can't find any posts on it. Is there any way to finagle things so that the ZFS datasets are exempt from whatever that dirtymodules.json file is being used for? Or is that something that would have to go through Volker?

There are two main problem in omv-zfs plugin

First is NFS shares problem
NFS share prevent from mounting at boot

Second is Fstab problem
something like a ...
mount: can't find /openmediavault in /etc/fstab'

Both are solved, but it is not released yet, since OMV 3.0.60 is not released which omv-zfs depends on
and I think OMV 3.0.60 release term will be longer than others due to many changes

if you want to test these developer version
install deb I attached like omv-extras and
Developer->Setting->Install OMV from github
Developer->Plugins->select omv-zfs->Package->Install

but remember due to that 3.0.60 is not officially released
others plugins may not works properly

apt-get install --reinstall openmediavault openmediavault-zfs
to rollback packages previous version

Zitat von luxflow

There are two main problem in omv-zfs plugin

First is NFS shares problem
NFS share prevent from mounting at boot

Second is Fstab problem
something like a ...
mount: can't find /openmediavault in /etc/fstab'

Both are solved, but it is not released yet, since OMV 3.0.60 is not released which omv-zfs depends on
and I think OMV 3.0.60 release term will be longer than others due to many changes

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Okay, thanks. I was mainly wanting to point it out in case it wasn't on anyone's radar; the workaround will carry me through until 3.0.60 is released and we can get the (several) updated plugins out. Mostly I just expected it was a one-time thing and didn't think it'd be coming back.