New to ZFS Having issues

[procheeseburger]

I have a 3x Node setup on VE 7.2-11. All three nodes have 2x Samsung 870 SSD's which I have created ZFS for each. This was working fine for about 2 weeks and now I'm having massive IO Failures on all 3 to the point that the ZFS is in suspended state. Previously I just used NFS to my Synology for VM storage which worked great.. I'm on the fence about just moving this back but would like for ZFS to work. What logs can I provide / is there something simple that could fix this?

root@node4:~# zpool status pool: VM-ZFS state: SUSPENDED status: One or more devices are faulted in response to IO failures. action: Make sure the affected devices are connected, then run 'zpool clear'. see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-HC config: NAME STATE READ WRITE CKSUM VM-ZFS UNAVAIL 0 0 0 insufficient replicas mirror-0 UNAVAIL 0 0 0 insufficient replicas ata-Samsung_SSD_870_QVO_2TB_S5VWNJ0R907789E FAULTED 6 0 0 too many errors ata-Samsung_SSD_870_QVO_2TB_S5VWNJ0R905032A FAULTED 3 0 0 too many errors errors: 45859 data errors, use '-v' for a list

 

[Dunuin]

I really wouldn't recommend using ZFS with these SSDs. QLC consumer SSDs are the worst of the worst you could buy when it comes to write performance and durability and ZFS really needs alot of that because of the massive overhead. A mdadm raid1 or HW raid might be a better choice.

You might want to check you cabling, if newer SSD firmware are available and the SMART attributes of your SSD (temperature and so on).

 

[procheeseburger]

okay thanks! So I do have enough 4TB Iron Wolf drives I'll probably switch to using them I just liked the idea of using SSD's for this instead.