VDEV Resize Failure

[Nick Weaver]

Hi,

I'm not sure what the right confluence of terms to use here is, so if this has been asked and answered before please let me know. I have a freenas ZFS pool setup like this:
3 VDEV:
8x 1.5 TB raidz2
8x 2.0 TB raidz2
8x 4.0 TB raidz2

I was trying to resize the 1.5 TB vdev because it is getting old. I have replaced every drive in that raidz2, but it did not auto-expand the size like i was expecting. Is there something I am missing about how this should work? Is there a configuration option I need to check somewhere? I'm still relatively new to freenas (the zfs was setup on an old NAP-IT install i migrated it over to freenas)

 

[nojohnny101]

Run the command "zpool get autoexpand" and post the output in code tags.

 

[Nick Weaver]

Code:

[root@freenas] ~# zpool get autoexpand
NAME		   PROPERTY	VALUE	SOURCE
bigstore	   autoexpand  off	  default
freenas-boot   autoexpand  off	  default

looks like your intuition is right

 

[nojohnny101]

Well there you have it, "auto-expand" is turned off. It needs to be turned on in order for the vdev to expand when you add larger capacity drives.

 

[Nick Weaver]

yeah, now that i know what property to search for it appears my case is covered here: https://doc.freenas.org/9.3/freenas_storage.html sections 8.1.11 and 8.1.12. Thanks for your help nojohnny101 !