unraidersofthelostark

I do not understand the hate for ZFS… I recently spun up a 3rd Unraid server, with 5x 16TB Iron Wolf Pro’s and it’s been great! The only downside is the lack of support for a cache pool/drive. Perhaps that’s an inherent limitation of using a ZFS pool but if it’s not that’s the only thing missing. I say that from a power efficiency + drive protection perspective; If my drives aren’t spun up they’re much less likely to be damaged when my dog bumps the rack or jumps off the bed. It is plenty fast for reads and writes! If I could use a single large SSD for the new data (or ideally another ZFS pool of SSDs) that would be perfect! I use Syncthing to replicate from one server to another, and end up having the drives spin up on my ZFS server, every time I send data to my primary server (Traditional XFS array w/ 4TB Cache SSD). The file Integrity plugin broke on my primary server well over a year ago at this point and nothing I’ve tried has fixed it. I am not interested in reinstalling Unraid and spending additional time to troubleshot that issue. In my opinion a proper NAS solution has integrated file integrity checking/monitoring. Since Unraid does not + that plugin takes a ton of CPU power/time. Plus, who would rather manually fix a corrupted file vs having the file system fix it automatically without even bothering you? I appreciate Lime Tech adding ZFS support!

Thankfully I did! Though it was a painful restore to pull that much data from the cloud backup (Didn't have a local backup server yet). One of the replacement drives threw CRC errors, which is probably a cable or other issue unrelated to the drive, think I should run additional tests after swapping the cable and running an extended SMART test? Thanks! Hope your weekend is going well

Sounds great! Thank you for getting me on the right path. UnRAID is awesome and it is well worth seeing through the steep learning curve. One time I cleared out half my movies by moving files the incorrect way, that was a tough lesson to learn.

@trurl I really appreciate the advice! I regret leaving any USB devices in my array and have certainly learned from this experience, that 8TB is the last one left. So it sounds like stopping the rebuild is my best bet of saving the data on Disk12. Not sure how to handle the array effectively having two "bad" disks. As you stated there was probably nothing wrong with the USB disk but I have removed/readded it and started the rebuild. If there is a way to get a list of the contents on the two drives in questions I should be able to restore the files from a backup. The really unfortunate part of this setup is I do not have connectivity for another disk to replace the USB disk as an internal. I would strongly prefer to not have to rebuild that array (50TB) from scratch but understand if it's at that point. Would I still be able to start the array and pull the rest of the data off other drives if I disconnect the USB disk and fire up the array?

@trurl Oof, I'm assuming you're referring to how it's full of ATA bus errors along with the link dropping to 1.5gpbs? I also see "md:recover thread:multipledisk errors, sector=296933472" and then it seems to increment by 8 sectors on the next message of the same error. What would I do in a situation such as this? Disk12 dropped out, didn't think much of it since it's USB and like you said isn't the reliable. Then during the rebuild Drive1 apparently died (Those errors seem plentiful and serious). Considering I was 5.8% into the rebuild of Disk12, what should my next step be? I picked up 2x used WD 8TB RED NAS drives from 2017 for $85/each so I have drives to swap if that's recommended. Going to try to preclear them in another system so they're ready to go + checked for SMART errors. Thank for the tip on disabling spindown, I have the delay set to 8 hours up from 4 but will disable it entirely.

@trurl Disk1 of the array, the ST8000DM004 (Which is just found out is SMR, same model as what I have as parity)

Thank you for the heads up! I had not known that when I started my UNRAID journey a few years ago, and plan on phasing them out as they die/need to be replaced. Please correct me if I’m wrong but a faulty USB device wouldn’t cause UNRAID to report errors with an internal drive, would it? I’ve also noticed the rebuild process seems to be stopping frequently, although no additional errors or issues are reported. The average speed is a few MB/s due to the frequently disruptions.

As someone who wants the option of paying someone else to figure out my issue vs HAVING to figure it out myself, this is a game changer. I’m considering booking a slot just to have a professional check over my configuration, let alone the issue I ran into recently that I’m actively trying to troubleshoot. I think $150/hr for a service that otherwise wouldn’t exist is completely acceptable.

My personal policy is if there are actual errors reported by SMART I replace the drive. If it’s CRC errors or UNRAID being weird by disabling the drive, I’ll troubleshoot the issue that caused it. However as you’ll see I also have a thread asking if I need to replace drives so perhaps it would be best to wait someone one more knowledgeable than myself to chime in. Wouldn’t hurt to start looking at replacement options though

Good day everyone! I would greatly appreciate help figuring out what’s up with my UNRAID server. It’s running 6.12.6 and hadn’t had any issues until today after the server shutdown due to a power outage. The server appeared to have safely/gracefully shutdown successfully, however when I powered it back up, Drive 12 of the array was “Disabled” I followed the standard procedure to get it back into the array. About 2% into the data-rebuild for Disk12, Disk1 threw 168 errors and the rebuild stopped for a few minutes. - Update, the error count is up to 248 on Disk1 and the Extended SMART test reports as Interrupted:Stopped by Host The rebuild was continuing along and no other errors had occurred (at 3.1%) but I am wondering if I should consider replacing one or both the drives. I will attach the full diagnostic file. So far no SMART errors on either of the drives. I am still waiting for the extended tests to complete. The original drive that was disabled is a USB external drive and the other is an internal HDD (May be connected through a cheap PCIe 8 port SATA card.) Thanks for reading! tower-diagnostics-20240110-1417.zip

I can confirm the issue persists if the service is manually started/restarted/or set to delayed start. I was also unsuccessful getting multiple shares passed through. However now that I have the /user folder passed through I'm backing up 40TB for $70/year

Any chance you figured this out and that's why the thread is quiet? I'd love to get this working :)