PistolKnight_UK

Thanks for all the help, you have been great! I hope you have had a great Christmas. I have it all back uip and running now, restored or deleted the files shown from the scrub. done the scrub again and zero errors. I have a couple of TB of files on my old drive which I need to copy back to the new DISK 4. unless, is a way of just re-adding the disk to the array with the files on there? Once that is done I can then read up on moving the "Stable array" to my new hardware. 🙂 should be fun!

thanks for answering that for me, I will wait for the rebuild to complete before doing any more, all the missing files from the emulated disk seem to be on my original mounted disk. I am not sure where I am deleting the corrupt files highlighted in the scrub from anyway, whether it is from the array or the cache drive, both etc. I'll look again when I can think straight. it's been another long day in the mad rush before Christmas. 🙂

ok, Am I best to wait for the rebuild to finish? I see lots of files missing from the array and they are all on the original disc 4 which is just mounted, I guess that the original problem with that drive was caused by the faulty power cable from the psu as the only errors on that drive I could see from smart were UDMA CRC error count which was high 757 but hasn't changed since I changed the psu. no other errors reported with the SMART test on that old drive. Am I right in thinking that the first rebuild that was cancelled deleted them from the emulated disk? If so I am lucky that the original disk is intact.

UUID: c95e4fc6-e562-4bf0-8e45-600e8e7f8caf Scrub started: Tue Dec 24 12:07:35 2024 Status: finished Duration: 1:54:57 Total to scrub: 163.61GiB Rate: 24.29MiB/s Error summary: csum=215 Corrected: 0 Uncorrectable: 215 Unverified: 0

OK thanks, data rebuild is now running, and scrub is as well. I will post results, it will take ages so Have a great Christmas. Thanks again for your time and assistance.

memtest found 0 errors, To run a correcting scrub on the cache pool, I presume I have to start the array first should I have the original Disk 4 assigned or leave the replacement drive assigned that I aborted the rebuild on assigned? Sorry I don't have much experience with any of this (wished I did).

memtest all ok 5 passes over 4 hours

not sure if it helps but here is a new diag with the old drive back in tower2-diagnostics-20241223-1942.zip

I can see crc errors on the drive could these be from when the psu was playing up possibly? I done a quick smart test and it shows no errors

I only ran the memtest for just over 1 pass with no errors I will run it again later. I have mounted the old drive with UD and I can see all my data on it.

devices were the same names yes, I just copied to config folder over from the backup.

will do, Do I need to do multiple passes on Memtest if it shows no errors?

As far as I was aware parity was valid at the time that disk 4 went to disabled however the psu started making a lot of noise and was playing up. before I managed to get the new PSU fitted (which was faulty) Disk 4 was offline marked as disabled. I managed to get a PSU working but then the power cable to the parity drive was faulty, I fixed that and the Flash drive was unreadable. I got a new Flash drive built it with the latest backup I could find which was quite old. I didn't think I had made any changes since but possibly had. Thats pretty much what has happened so far.

yes, the old disk was marked as disabled and I have just reconnected that as well. I have stopped the rebuild, rebooted and now running memtest.

this is quite a steep learning curve. just wished I was a bit wiser in the first place. I appreciate all the help guys.