Howto - grow a TN Core zfs pool possible by replacing the old with newer, larger disks out of the box?

[flashdrive]

Hello

I have found this:

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zpool get all data

Check:
zpool get autoexpand poolname

Enable:
zpool set autoexpand=on poolname

zpool list

zpool status

zpool online -e data gptid/787b8c36-f47f-11e7-98c4-001a4d670c50 gptid/272648e1-f42f-11e7-b0bc-001a4d670c50 gptid/65a97147-1426-11e7-9207-001a4d670c50 gptid/0e15663c-f3f1-11e7-bc35-001a4d670c50

 

[danb35]

autoexpand=on has been the default for a very long time--at least since the days of FreeNAS 8.x, which is over 10 years old. The answer to your question is to replace the smaller disks with the larger disks one at a time through the GUI. If you're having problems with that, some detail about what's happening would be nice.

 

[flashdrive]

Hello @danb35

thank you for your answer.

In fact I am preparing to read about expansion - I have not done the expansion yet.

First I want to evaluate the known caveats.

 

[danb35]

The caveats are those that apply to any disk replacement, primarily that if you remove a disk from your pool you've reduced (or lost, depending on your pool's configuration) redundancy. If you have the ability to have the replacement disk online in addition to the existing pool disks (i.e., you have a spare SATA connector you can use, even if only temporarily), you can avoid this problem. The docs explain how to replace a disk:

Disk Replacement

Describes how to replace a disk and restore the hot spare in TrueNAS CORE.

www.truenas.com

...but don't seem to address expanding a pool that way any more. But the old docs did:

10. Storage — FreeNAS®11.3-U5 User Guide Table of Contents

www.ixsystems.com