Hullscotty1986

So the parity check corrected 21000 errors overnight. Kicked off another one and so far its up to 700GB with 0 Errors. It looks like it was that power adapter that was the issue. I think the next thing for me to do is to get a better PSU with 8 sata connectors on it rather than rely on molex splitters. I will be doing this before putting another drive in Thanks all for your help Scott

Yeah I will do thanks. At about 50GB it stopped producing sync errors and. Its up to 160GB now with 0 errors in the last 100GB. After this check I will run another one to make sure it comes up with 0 errors. Is there anything in the logs saying the Unassigned drive is bad? Is there any reason I shouldn't put it back into the array after this?

Hi All, So the data copied overnight. I did a dip test on disk 5 and the files seem to open OK. I kicked off a parity check and its up to 30GB but already has 2798 errors. Would this be expected with the situation i'm in? I would have thought as it copied the files it would have updated the parity so it should have been correct. Attached is the latest diagnostic logs (no reboots this time). Does anything look dodgy with any of the disks? Thanks Scott media-diagnostics-20191112-1025.zip

Yeah either way is going to yield the same result. I have started the copy, done 60GB of 3TB! I have thrown away the power cable i was using on disk 5 too. The issues didn't start until I changed the power cable. I don't know for sure if that is the issue but the fact that my old disk5 is still readable after it kept going red makes me think it is. After the copy is done I will do a full parity check and hopefully everything will be back to normal, minus a few files that i lost. Thanks all for your help.

I dont think it will be possible tbh. I am going to start the format now so I can do the copy overnight

@Dissones4U It is a backup minus about 7 days which is better than full data loss. I have mounted it as a unassigned disk and the data is still good.

Yes you were right same issue. So, i have my old 3TB drive but i dont have a config with the drive in the pool. I think the issue was the power cable to the drive, not the drive itself. So I can think of 1 of 2 things to do. 1 Modify the config so it has the old drive id, and rebuild the parity. Or - Format the new drive so disk 5 is clean, then copy everything form the 3TB unassigned disk to the new 6TB disk. I would prefer option 1 but i dont know if its possible?

You were correct, still says unmountable. Is this because the parity is now corrupted?

I shut it down and backed up my flash drive. At the same time I pulled the power from disk 5. Rebooted, and started the array. It now says that disk 5 is missing but still unmountable no file system. Disk 5 is not emulated. I thinking at this time to restore a previous backup of my unraid config, from when i switched USB keys.

Used -vL anhd got: fatal error -- couldn't map inode 4298301629, err = 117 resetting inode 6442942751 nlinks from 42 to 1 resetting inode 6442944898 nlinks from 1 to 2 resetting inode 6442944901 nlinks from 1 to 2 resetting inode 6442944903 nlinks from 1 to 2 Full attached disk5errors vL.txt

I have run the check with the array in maintenance mode and it had found a load of errors (attached) Do i now run the check without the -n and just as -v to force it to repair? Thanks Scott disk5errors.txt

Thanks for your reply. I have not formatted yet. The array is offline at the moment. I have switched the SATA cable out and its still the same. Let me know what you find in the logs. Thanks for your help. Scott

Sorry forgot to say. Running unraid Version: 6.8.0-rc5 Motherboard: ASUSTeK Computer INC. M5A78L-M PLUS/USB3, Version Rev X.0x American Megatrends Inc., Version 0502 BIOS dated: Fri 18 Nov 2016 12:00:00 AM UTC CPU AMD FX™-8350 Eight-Core @ 4000 MHz Memory 16 GiB DDR3. Diagnostic logs also attached media-diagnostics-20191111-1052.zip

Hello All, I am in urgent need of some advice. I have been a long time Unraid user with 0 issues but the past few days have been really bad. I will give some background for context, it may or may not be relevant to the current situation. So a few weeks ago i wanted to expand my array. I had 2x6TB (Parity and disk 1) and 4x3TB drives (Disk 2-5) giving me a total of 18TB. I bought 2 more 6TB that i wanted to put in new slots. I put them in and started preclearing them. During the preclear one of the new 6TB came up with Smart errors (sector reallocation). I shut it down and took it out (and did an RMA), however when the machine rebooted Disk 5 was in a red state but no smart errors. I did a quick google and tried to unassigned it and reassign it to force a rebuild. While it was re building it kept erroring. I assumed it was a faulty drive and took it out and replaced it with the 6TB new drive. It did a rebuild fine and everything was OK, giving me a new array size of 21TB, until yesterday. Yesterday I tried to restart one of my docker containers. The docker tab was missing and there was an error so I rebooted. When it tried to start it couldn't find the USB key to boot from. I shut it down put it in my laptop and it appeared fine. I had a spare USB drive so i copied the old key to the new one and it started fine. After doing the licence dance the array started fine and it stared doing a parity check. After a few hours I checked back on it and it had quite a few thousand errors. I let it complete overnight and it had ~22000 corrections. I noticed that on of my dockers wasn't working correctly so i rebooted again and now it says disk 5 is "Unmountable: no file system". and wants me to format it. Whats even more worrying is that its not emulating disk 5 and the total array size has dropped back to 15TB, like the new disk wasnt even part of the array. My question is, what do I do. Obviously i don't want to loose any data, but im not sure if thats possible. Do I format? If i do will it rebuild disk 5 or will it just wipe it? please help.