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I've been running a straightforward ZFS mirror on Ubuntu for a couple years. This pool started out as two 2TB drives in a mirror. I got some 3TB drives for free, and swapped out my 2TB drives for these 3TB models at the time by using zpool replace. This way, both before, during, and after the upgrade, my pool had a single mirror vdev.

A pool of mirrored vdevs is the best for expansion and io performance, but the worst for space usage and guaranteed redundancy. After one disk failure that isn't resolved, a second always has a chance of taking out the pool if it happens to be the partner to the one that failed. For example, a 4 disk pool with 1 failed disk has a 1/3 chance of taking the pool out on a second failure.

A ZFS pool expands when its existing VDEVs become larger, or by adding another VDEV, but you can never remove a VDEV from a pool (but you ...

I'm thinking with mirrored vdevs expansion should be easier? I would just add an additional vdev of 2x 3TB to expand the zpool in order to ...

Yes. I've done this with a 4 disk RAID-Z but a mirror should work the same. Offline one of the drives, physically remove it, ...

Jul 21, 2016 · I'm on Ubuntu 16.04.1 LTS and I have a ZFS pool named unas containing two mirrored drives. I have now attached two more drives and I want to add these new drives to my unas pool as a pair of mirrored drives so that I end up with one pool, named unas, which contains 4 drives, grouped into mirrored pairs.

This isn't great for expansion, and the old way to rebalance data was ... Using this to move the disks from the ZFS VM storage pool over to ...

Upon issuing your zpool attach command, the expansion begins. During expansion, each block or record is read from the vdev being expanded and is ...

25.07.2013 · One of the prime job of Unix administrators will be extending and reducing the volumes/filesystems according to the application team requirement.In Veritas volume manages,we carry out such a tasks in online without un-mounting the filesystems. To increase or reduce the filesystem, you need to add or remove the disks from the diskgroup in vxvm. But in …

14.02.2021 · Our pool had issues or we just want to expand its capacity by adding bigger disks. The new replacement is unformatted and we need to give it some ZFS. The original mirror contained two disks of 32GB capacity each. One has been substituted by a larger one capable to contain 64GB (the same applies for same sized disks).

You can upgrade the mirrors 1 drive at a time with resilvering, this is mentioned in quite a few ZFS guides. Once every drive in that mirror is ...

Solved: How to grow or extend ZFS filesystem in Solaris 10. Below are the steps to grow a zfs filesystem. Identify the zpool of the zfs filesystem. df -h | grep -i sagufs df -Z | grep -i sagufs. Above command will give you the complete path of the filesystem and zpool name even if it's in zone. Check that the pool doesn't have any errors.

21.09.2012 · Remember that ZFS performs reads in a mirror in round-robin fashion, so that while you get a single drive’s performance for writes you will get approximately the sum of all of the drives in terms of read performance – it’s not hard for a 3-way 6gb/s SSD mirror to crack 1,500MB/s in sequential reads.

Dec 30, 2012 · to extend a ZFS mirror, add the same number of drives. The resulting striped mirror is a RAID 10. For example, if you have 10 drives, you could start by creating a mirror of two drives, extending this mirror by creating another mirror of two drives, and repeating three more times until all 10 drives have been added.

04.05.2017 · to extend a ZFS mirror, add the same number of drives. The resulting striped mirror is a RAID 10. For example, if you have 10 drives, you could start by creating a mirror of two drives, extending this mirror by creating another mirror of two drives, and repeating three more times until all 10 drives have been added.

Hey folks, I've been running a straightforward ZFS mirror on Ubuntu for a couple years. This pool started out as two 2TB drives in a mirror. I got some 3TB drives for free, and swapped out my 2TB drives for these 3TB models at the time by using zpool replace.This way, both before, during, and after the upgrade, my pool had a single mirror vdev.

Jul 25, 2013 · mismatched replication level: pool uses mirror and new vdev is disk Unable to build pool from specified devices: invalid vdev configuration root@Unixarena-SOL11:~# So you can’t add disk without mirror copies in mirror zpool and it make sense. 3.Extend the mirror zpool with valid vdev’s. root@Unixarena-SOL11:~# zpool add oracle-M mirror ...

If you want to manually expand the volume all you have to do is bring it online with the -e option. ... You can also toggle the autoexpand option to have it ...

To add a new mirror drive to the system, first back up the data. Second, use zpool status to examine the current ZFS pool. In this example, the ...

Although you should have no problem as the first drive already forms part of the pool, a backup is recommended. Quick answer: You need the zpool ...

13.02.2019 · Yes. I've done this with a 4 disk RAID-Z but a mirror should work the same. Offline one of the drives, physically remove it, replace with bigger. Wait for resilver to complete, repeat for the other drive. Once both disks have been replaced and synced, use gpart resize to extend the freebsd-zfs partitions.

The Basics of Pool Topology