DiscoStu

Sorry I probably wasn't super clear, 2 separate confusions....I do understand all discs read on turbo mode, I was just trying to figure out what they were reading, as I wasn't transferring, no dockers running, etc etc. It did eventually relax and spin down, so no worries. As for disk4 I didn't consider the physical platter sizes, so certainly part of it. I was watching it closely later and did notice times where it was at 70% or so of the other discs which made sense. But some of the time it was at like 0.5% of the other drives speeds so I do think that drive might be hurting. Thanks again for talking me through. Plan to do parity check, backup to the offline drives again this week, and if everything is stable move to the new case this weekend.

Thanks as always, I figure I will leave it on while doing these big moves, then put it back to auto or normal. Quick question, I am allllmost done with all the moves and organization, and suddenly speeds have again dropped off a ton. I noticed 2 things likely related... Disk4 is either not reading at all, or reading at kb/s speeds. While im on turbo this seems strange, but all smart tests say 4 is just fine. This is also my oldest drive and wouldn't be surprised if it is dying from all these transfers. Also noticed that even when I paused/finished all the transfers that I was running (and neither mover/parity check running at the time) that my disks were all still reading or writing at decent speeds. Couldn't find what they were doing, even had all my dockers closed at the time. discoraid-diagnostics-20260202-2318.zip

haha bummer, just feel bad for future guy in the same boat. I've just learned about turbo or reconstruct write, and now its around 100MB. Is this safe to use during this move, and keep on after as well?

Thanks again for your help and the info dump. I have a lot to do when I'm back stable. Update, I now have disk1 back to stable, mounted the old disk1 and files are copying now. I tested move vs copy and doesn't seem to have any speed difference, so stuck with copy just in case something goes wrong. I've never done transfers from a mounted disc outside of the array like this, is it supposed to be quite slow? seems pretty consistent around 25-35 MB/s.(update: found out about turbo/reconstruct write and now its closer to 100-125MB/s so not terrible) Also I do feel like I should have some sort of conclusion to this thread for people looking in the future... I suppose we are blaming the usb error, or I somehow messed up the filesystem check then fix? I'm unclear how I would even recreate what happened the first time (erasing just disc1s info)

i feel like youve looked into my soul sir so all the a........ not existing are failed appdata backups? it created them at first somehow, not it works correctly, but I never knew how or if i could safely delete them. the e..... not using cache is long term backup disk3 is part of, rarely does anything once I filled it, I probaly just never set it to use cache, but I should. How does one set cache for the whole system? i only know how to set it by share. Also if it did hit the overflow point, does it pause until enough room, or just skip the cache and move straight in that instance?

Yep that was my thought, i shall wait. I do move/download to the cache pool first, but its only 2tb and in this case if I move its going to be around 10tb so certainly just wait. Thanks for the diagnostic info, Ive basically just been looking at syslog so good to know. Checking out the rest now, gives me stuff to research i understand 60% of this. Let me know if you found any other no nos while sorting through my junk haha. I really sad thing is I was ready to move to a new case for better cooling this weekend, but that will wait for a bit now. May I ask why you don't use hot swap cases / racks on either of your servers? I tried one years and years ago first doing large data stuff and never looked back

rebuilding, probably will 24 hours or so Is it safe to attempt mount the old drive during this, or transfer files to the array during the rebuild? I like being efficient, but I don't want to stress the drives. Thanks again, lurking hard on your signature links, much to poke at when i get this back up!

Should i format it first while not selected as disc1? (or stop array first and attempt to format there) then stop array, restart with it in that slot?

Thanks great. I ran a smart test and checked the folders seems all good. Dumb question, is there a write up on how to read the diagnostics? I want to learn what you are reading and didn't find exactly that in your signature links.

sorry forgot it was in maintenance (embarrassed face) discoraid-diagnostics-20260130-1917.zip

finished, and says fixed. I can't post all the results way too long but here is the end... Phase 5 - rebuild AG headers and trees... - reset superblock... Phase 6 - check inode connectivity... - resetting contents of realtime bitmap and summary inodes - traversing filesystem ... - traversal finished ... - moving disconnected inodes to lost+found ... Phase 7 - verify and correct link counts... Note - stripe unit (0) and width (0) were copied from a backup superblock. Please reset with mount -o sunit=,swidth= if necessary done discoraid-diagnostics-20260130-1908.zip

Thanks again gents Fix is in progress, noticed that under main it at least says xfs next to disk3 where it once said unmountable, so hopeful this does the trick. Even if it nukes the data, as long as it is stable I'll move onto disk1. For that... stop array, format disk1, then put it back into array, start in regular mode, let data rebuild? unsure if I need to do this part in maintenance mode as well

K, very scared but I'll do it when I get home. I hope it doesn't make me run the check again to do the fix, it took a whiiiiile

Sorry that for formatting was so bad, there were about 100 lines of ......, too big to paste

Finished by the time I woke up... Going to stop the array until I get home from work Phase 1 - find and verify superblock... couldn't verify primary superblock - not enough secondary superblocks with matching geometry !!! attempting to find secondary superblock... .............. ...found candidate secondary superblock... verified secondary superblock... would write modified primary superblock Primary superblock would have been modified. Cannot proceed further in no_modify mode. Exiting now. Now there is the option to "Fix, file system corrupted". Is the next step to try the fix? Is it really dumb I'm debating trying to make a backup of what is on disk3 (that is currently emulated), just in case it nukes again? Again this data not the end of the world if I lose though.

ha, sleep well and thanks again, I'll let it run and post any results in the morning. Sort of, I have the original disk3 from a few months ago when i upgraded that too. Disks 3 and 4 are mostly backups for other stuff so if I have to format wont be the end of the world. The stuff on disk1 is all i am really worried about

I do have to go to bed soonish... should I let it run overnight without worry? Then ultimately am i looking at either A. this fixes 3 magically, then rebuild 1 or B. this does nothing, and the move is to restart normal mode, double format, and rebuild on both?

looks hung, still hasn't moved since what I posted. But I'll let it go nope i did it from main, disk3, check...

kk thanks. not a good start.... xfs_repair status: Phase 1 - find and verify superblock... couldn't verify primary superblock - not enough secondary superblocks with matching geometry !!! attempting to find secondary superblock... 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Running

Gotcha, I don't think it lets you do just 1 so good call. so to be extra clear. I stop array, start in maintenance mode (with disk1 no selected? if i select it i believe it starts the rebuild). then go to main, click disk3, down to check filesystem? (haha I'm still scared sorry)

how would i reformat while it is moving? I see under array operation you can press yes then format, but it lists both disk1 and disk3 there. Will this format both of them?

I've gotten up to adding disk1 back in to rebuild, but noticed it still says unmountable while doing the rebuild now. Is this normal, and will go away when finished? Or should I stop it and start again?

Have the new usb, seemed to go / work smoothly. New Diagnostics before and after starting array attached. Still showing disc3 and disc1 unmountable. Disc3 is at least shown in the correct spot on the array before starting, while disc1 is unassigned, and when I select that correct drive I get the red "All existing data will be OVERWRITTEN...". Also maybe worth noting the historical unassigned device huh721212ale601_8cg8g8le is the old disk1, replaced recently. I'm terrified at this point so waiting for everyone's advice before I touch anything else, but my thoughts... Now I'm down to no parity/protection, so first step is getting disc 1 or 3 going. At this point disk1 is already lost data from earlier (can grab hopefully from the old drive later), so first step would be to put disk1 back into the array, start, let it overwrite everything, then I'll be in the same place data wise, but with at least 1 working parity. Then do the filesystem check / repair on disc 3? This is the part I still don't understand, last time this erased all the info that was on disc1 from the array, don't want this to happen to disc 3 as well. Also have read on a few threads the unraid live memory tester can find errors memtest86 cannot, should I also give this a run? Thanks again discoraid-diagnostics-20260129-2007.zip discoraid-diagnostics-20260129-2010.zip

Thanks, figured this would be the case. I found a 32gb onn flash drive locally, but I think I'll wait another day for the SanDisk ones to arrive. Never used anything by onn before

Well I thought I had another new usb stick, sadly do not. Couldn't find one small enough in person tonight, so ordered a few more. Did run a windows error check on the usb stick and passed. Posting new diagnostics, one before starting array, and one after (let me know if this is not needed). Disc 1 and Disc 3 are still unmountable. Powering down now, let me know if you folks would suggest anything else while waiting for the new usb stick discoraid-diagnostics-20260128-1852.zip discoraid-diagnostics-20260128-1850.zip