Problem Creating mirrors with zfs plugin

bookie56 · 1. Dezember 2017

Hi guys!
I have tried adding a zfs pool with a mirror with two drives and then rebooting and trying to add another mirror with two drives to the same pol...keep getting errors...

Error about informing the kernel....reboot...

No pool after reboot?!

Is anyone else having problems?

This is the error I got after making sure drives were wiped and rebooting after creating pool with two drives...this came up when adding anoter mirror to same pool

Code

Error #0:
exception 'OMV\Rpc\Exception' with message 'Invalid RPC response. Please check the syslog for more information.' in /usr/share/php/openmediavault/rpc/rpc.inc:186
Stack trace:
#0 /usr/share/php/openmediavault/rpc/proxy/json.inc(95): OMV\Rpc\Rpc::call('ZFS', 'expandPool', Array, Array, 3)
#1 /var/www/openmediavault/rpc.php(45): OMV\Rpc\Proxy\Json->handle()
#2 {main}

bookie56

cabrio_leo · 1. Dezember 2017

This is a known error of the ZFS plugin. It is possible, but you have to do this by command line. This was already described here in this forum.

Have to look for the thread.

bookie56 · 1. Dezember 2017

Well, that is strange....
I checked status after adding the extra mirror of two drives:

Code

Pool status (zpool status):


  pool: DN-Server1
 state: ONLINE
  scan: none requested
config:


	NAME                                          STATE     READ WRITE CKSUM
	DN-Server1                                    ONLINE       0     0     0
	  mirror-0                                    ONLINE       0     0     0
	    ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N1406149  ONLINE       0     0     0
	    ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0852714  ONLINE       0     0     0
	  mirror-1                                    ONLINE       0     0     0
	    ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0905034  ONLINE       0     0     0
	    ata-WDC_WD30EFRX-68EUZN0_WD-WCC4N4ZT3S78  ONLINE       0     0     0


errors: No known data errors

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I thouht it was strange when I saw I had:

So things are working even if I was getting strange readouts....

bookie56

cabrio_leo · 1. Dezember 2017

Look here

It should be something like that:
zpool add yourpool mirror /dev/sdd /dev/sde

Replace the /dev/* by your disk IDs

Edit: You were faster than I

Zitat von bookie56

So things are working even if I was getting strange readouts....

Nevertheless it´s a known bug of the plugin.

bookie56 · 1. Dezember 2017

Thanks for that...
Getting an error when I try to add my user to ACL....?

bookie56
P.S Going for a walk...be back in about 2 hours...

cabrio_leo · 1. Dezember 2017

Did you enable the ACL support for ZFS?

Like @flmaxey has recommended here (thanks ), some ZFS settings should be changed after creating the pool.

Code

zfs set aclinherit=passthrough yourpoolname
zfs set acltype=posixacl yourpoolname
zfs set xattr=sa yourpoolname
zfs set compression=lz4 yourpoolname

There he also explained the meaning of the settings and why one should set it.

bookie56 · 2. Dezember 2017

OK!
Thanks for that I will investigate and get back to you...

bookie56

bookie56 · 2. Dezember 2017

Well, I am not impressed....
I can install and create zfs pools via the terminal but OMV doesn't see my drives with any file system on them...
So, unless I use the plugin...what is the point?

bookie56

cabrio_leo · 2. Dezember 2017

Zitat von bookie56

I can install and create zfs pools via the terminal but OMV doesn't see my drives with any file system on them...

I did create all of my ZFS pools by CLI and all of them were recognized by OMV. Sometimes a reboot was necessary.
But I am also using the ZFS plugin e.g. for creating the ZFS file system, modifying attributes and so on.

bookie56 · 2. Dezember 2017

well I did a reinstall and haven't added the plugin yet. ..will do that tomorrow and get back to you...

subzero79 · 2. Dezember 2017

Also notice the plugin has a storage backend. If the plugin is not installed no shared folders to use in the zfs mount points or datasets.

bookie56 · 3. Dezember 2017

Hi subzero79...
Yes, I am learning the hard way...
I will get it sorted tomorrow ☺

bookie56

crashtest · 3. Dezember 2017

Is this similar to what you're trying to do?

While you may get an error of no consequence, when adding the 2nd and 3rd mirror (I think it's an RPC call), this can be done in the GUI in a few minutes. (Depending on the size of the drives.)

bookie56 · 3. Dezember 2017

Hi guys!
Well, now things are OK!
I, as pointed out, did a new install of OMV on this server (with all other drives apart from system not connected) and updated it until todays date....

I then as shown before added the:

Code

deb http://ftp.debian.org/debian jessie-backports contrib main

to my /etc/apt/sources.list and ran update..

I then ran the following to install zfs on my system:

Code

# apt-get install linux-headers-$(uname –r)
# apt-get –t jessie-backports install zfs-dkms

I then added my pool:

Code

# zpool create -f DN_Storage1 -o ashift=12 mirror /dev/disk/by-id/ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N1406149 ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0852714

The reason I created the pool with just two of my disks at once was just to make sure there were now hickups when adding to the pool. Here I have added two more drives as a mirror:

Code

# zpool add -f DN_Storage1 -o ashift=12 mirror /dev/disk/by-id/ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0905034 ata-WDC_WD30EFRX-68EUZN0_WD-WCC4N4ZT3S78

Now zpool status gave me this:

Code

root@DN-Storage1:~# zpool status
  pool: DN_Storage1
 state: ONLINE
  scan: none requested
config:


        NAME                                          STATE     READ WRITE CKSUM
        DN_Storage1                                   ONLINE       0     0     0
          mirror-0                                    ONLINE       0     0     0
            ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N1406149  ONLINE       0     0     0
            ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0852714  ONLINE       0     0     0
          mirror-1                                    ONLINE       0     0     0
            ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0905034  ONLINE       0     0     0
            ata-WDC_WD30EFRX-68EUZN0_WD-WCC4N4ZT3S78  ONLINE       0     0     0


errors: No known data errors
root@DN-Storage1:~#

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I then added a files system for my clonezilla files:

Code

# zfs create DN_Storage1/Partimag

df -h gave this:

Code

root@DN-Storage1:~# df -h
Filsystem            Storlek Använt Ledigt Anv% Monterat på
udev                     10M      0    10M   0% /dev
tmpfs                   766M   9,0M   757M   2% /run
/dev/sda1                29G   2,0G    25G   8% /
tmpfs                   1,9G      0   1,9G   0% /dev/shm
tmpfs                   5,0M      0   5,0M   0% /run/lock
tmpfs                   1,9G      0   1,9G   0% /sys/fs/cgroup
tmpfs                   1,9G      0   1,9G   0% /tmp
DN_Storage1             5,3T   128K   5,3T   1% /DN_Storage1
DN_Storage1/Partimag    5,3T   128K   5,3T   1% /DN_Storage1/Partimag
root@DN-Storage1:~#

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I added the zfs info that cabrio_leo pointed me to that flamaxey had put up:

Code

zfs set aclinherit=passthrough DN_Storage1
zfs set acltype=posixacl DN_Storage1
zfs set xattr=sa DN_Storage1
zfs set compression=lz4 DN_Storage1

I then added the zfs plugin as shown here

I then created a share with the same name as Partimag and then applied ACL privileges without hickcup....;)

Done!

bookie56 · 3. Dezember 2017

Little update!
Only a little fly in the ointment to annoy me...
Backing up files to new zfs mirrors from old server via live cd and the built in graphics has decided to stop working....can't see any progress from that computer...

I do know how much there is to back up and can see what is appearing on my new zfs server.....I will have to check a couple of times when it gets to the right size and then see if there is hard drive activity....really good timing!!

Not been a good weekend!

bookie56

Jetzt mitmachen!