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Subject: Re: [PVE-User] zfs raidz2 expansion
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On 2025-05-22 23:03, Randy Bush wrote:
>>> so, can i specify a second pool to be replication target, as i
>>> suggested in
>>>>> as we do full replication, we could just create a new pool for
>>>>> replocation and call it a day.
>>>
>>> i do not see an attribute for relocation pool in storage.cfg
>
>> Where does the quote here come from? Did I miss an email in this thread?
>
> all the above are from my keyboard on this thread
ah sorry. I was too blind yesterday to see that in your first email.
There is no option to replicate a full ZFS pool to another.
So, you have a current pool with one raidz2 VDEV made up of 4x 2TB disks.
What kind of pool layout/sitation do you want to have in the end?
Because if you have another set of 4x 2TB disks, you can just expand the
pool with another raidz2 VDEV, without expanding the current VDEV you have.
Right now, `zpool status` will show you something like:
pool
raidz2-0
disk0
disk1
disk2
disk3
If you add another VDEV, the pool could have the following layout:
pool
raidz2-0
disk0
disk1
disk2
disk3
raidz2-1
disk4
disk5
disk6
disk7
If you want to create a new pool, then things will be a bit more
complicated, as you would need to create a new storage config for it as
well, Move-Disk all the disks over to it. If you have a cluster and use
the VM replication feature, that new pool must be present on the other
nodes as well and you will have to remove the replication jobs before
you move the disks to the new pool and then re-create them once all VM
disks are on the new pool.
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