Hi Everyone Soo, I’ve used new VDEV expansion function for my RaidZ2 pool. It worked, which is great. I’ve expanded my VDEV of four 6Tbs with another 6Tb. No I’m supposed to get smth like 6X3, or to be exact 5.46X3 = 16,38 Tb of available disk space. But I see in my TrueNAS GUI only: Usable Capacit…

Mis-reported space Do a sudo zpool status if you want to confirm that the expansion has finished. Do a sudo zpool list if you want to confirm that the space has been added. The space is mis-reported in TrueNAS for 3 reasons: TrueNAS UI uses zfs stats rather than zpool stats when reporting pool …

[image] 24.10 RC2 Raidz expansion caused miscalculated available storage TrueNAS General I have a server with 6x18tb (16.37TiB) drives in RAIDz2, and due to hardware limitations, needed to start with 4 drives and expand later. Using 24.10 RC2, I extended my vdev twice, an…

Try this: GitHub - markusressel/zfs-inplace-rebalancing: Simple bash script to rebalance pool data between all mirrors when adding vdevs to a pool.

I don’t think it will help. The script is for rebalancing pool with multiple VDEVs. OP, apparently, has singular VDEV pool.

[image] swc-phil: Long story short – you probably have your space. But reporting of free/total space is now screwed. Yeah, same here - I’ve rebooted during the expansion as well Right, so everything (my space) should be there. Thanks for the info ! And yes, I have just one VDEV pool. “sudo…

[image] swc-phil: I don’t think it will help It very likely will. Although it was written for a different purpose (which, as you said, was rebalancing a pool after you add a vdev), rewriting data affects many ZFS changes you can make to a pool or dataset after data is written to it. A few e…

Less available disk pace than expexcated in TrueNAS

TrueNAS General

swc-phil May 8, 2025, 12:39pm 2

Long story short – you probably have your space. But reporting of free/total space is now screwed.

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Less available disk pace than expexcated in TrueNAS

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