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Apparent issues with ZFS on RPi 5 (lemmy.world)

submitted 3 days ago* (last edited 3 days ago) by ramenshaman@lemmy.world to c/selfhosted@lemmy.world

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I tried to find a more applicable community to post this to but didn't find anything.

I recently set up a NAS/server on a Raspberry Pi 5 running Raspberry Pi OS (see my last post) and since then I've got everything installed into a 3D printed enclosure and I've got RAID set up (ZFS RAIDz1). Prior to setting up RAID, I could transfer files to/from the NAS at around 200MB/s, but now that RAID is seemingly working things are transferring at around 28-30 MB/s. I did a couple searches and found someone suggesting to disable sync ($ sudo zfs set sync=disabled zfspool). I tried that and it doesn't seem to have had any effect. Any suggestions are welcome but keep in mind that I barely know what I'm doing.

Edit: When I look at the SATA hat, the LEDs indicate that the drives are being written to for less than half a second and then there's a break of about 4 seconds where there's no writing going on.

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[–] TCB13@lemmy.world 4 points 3 days ago (2 children)

It's a Pi, what are you expecting. You just wasted a ton of money on inferior hardware with extra software issues. You could've just got a mini pc with 2 nvme slots instead for half the price and add a 6 port sata board for 20$ to one of those. Much cheaper, way more reliable, upgradable and ZFS actually would've work as you expect.

[–] ramenshaman@lemmy.world 3 points 3 days ago* (last edited 3 days ago)

Just getting my feet wet. I have plenty of other uses for a Pi so if the NAS doesn't work out that's fine, I'll get something else. Worst case I'm out $70-ish for the Raxda SATA hat. Something is seemingly not right with my config, I haven't gotten the Pi to break a sweat yet. Thanks for your input though.