Alex.vision Posted March 27, 2021 Share Posted March 27, 2021 (edited) Hi All, I am having another problem with my system I hope I can get some help with. Currently I am on Unraid v6.8.3 (Nvidia Edition) and I have been waiting to finish my new backup system before updating to v6.9. I have purchased 10 14TB hard drives and was in the process of pre-clearing them. I have 12 8TB drives in my main case and 13 8TB drives in an external DAS case. In order to preclear then new 14TB drives I added a second DAS, daisy chained to the first one. I found that the limitations of my DAS cases are around 1,062MB/s and preclearing the drives would have taken forever. 400+ Hours plus half my array would be bottlenecked. So, I ordered a two port SFF-8088 LSI HBA to run one DAS case on each port. While I was waiting for the card to arrive, I ran preclears on 4 of the 14TB drives and paused the rest. My Idea was, I would preclear some, then pause the preclear, shutdown the system, add the new card, start the system back and resume preclearing with more bandwidth. When the card arrived, I popped it into my system and started it back up. All my drives showed up and the configuration was valid, so I started the array. Immediately I received a bunch of notifications in my browser about CRC Errors, when the page completed loading several of my drives were listed as Unmountable: No File System and my parity drive had an error. I stopped the array. I shut down the system, pulled the second DAS off and restarted the computer. I started the array in Maintenance mode and other than a red X on the parity drive, things look ok. I tried to start the array normally and it failed again with the same error. I am attaching a screenshot of my array, my diagnostic file and my syslog. I also downloaded all my drives SMART reports if needed. What should my next steps be, I hope I did not just Bork the data on 9 drives, that would be a really bad day. Main Array 1 12TB Parity Drive 23 8TB Data Drives 1 8TB Cache Drive Unassigned Devices 3 Drives in Unassigned Devices (Various Appdata Folders) 10 14TB Drives -Alex alex.vision-diagnostics-20210327-1509.zip alex.vision-syslog-20210327-2208.zip Edited June 4, 2021 by Alex.vision update solved Quote Link to comment
JorgeB Posted March 28, 2021 Share Posted March 28, 2021 Disks are not mounting because of read errors: Mar 27 15:05:58 Media kernel: md: disk13 read error, sector=8590653888 Mar 27 15:05:58 Media kernel: md: disk13 read error, sector=8590653896 Mar 27 15:05:58 Media kernel: md: disk13 read error, sector=8590653904 ... Mar 27 15:05:58 Media kernel: md: disk14 read error, sector=8590548952 Mar 27 15:05:58 Media kernel: md: disk14 read error, sector=8590548960 Mar 27 15:05:58 Media kernel: md: disk14 read error, sector=8590548968 .. Mar 27 15:05:59 Media kernel: md: disk16 read error, sector=8592953024 Mar 27 15:05:59 Media kernel: md: disk16 read error, sector=8592953032 Mar 27 15:05:59 Media kernel: md: disk16 read error, sector=8592953040 etc, check what they have in common, controller, expander, etc, there's likely a problem with one of those. 1 Quote Link to comment
Alex.vision Posted March 28, 2021 Author Share Posted March 28, 2021 They all are in the same direct attach storage case with the same backplane on the same controller. I have 2 SGI Rackable 3U 16 Bay SE3016 SAS Expander Chassis. I had them daisy chained to each because I only had a single port card in my computer. I discovered while trying to preclear some new drives that they were severely bottlenecked. When I realized it would take forever I got a two port card and moved each SE3016 to its own port. For some reason when I started the array I got those errors. Now I have 9 drives that had some kind of issue. I don't think there is anything wrong with them, I think they had some communication issue when I moved to the new HBA card. They had been working for a couple of weeks daisy chained together and the unit with my main array drives has worked for years on the old single port HBA card. It wasn't until I moved to the new card that I had trouble. Now I'm trying to understand what I should do to move forward and get these drives back online. I can put the old HBA card back in but wont the drives still be Unmountable? Quote Link to comment
JorgeB Posted March 29, 2021 Share Posted March 29, 2021 15 hours ago, Alex.vision said: I can put the old HBA card back in but wont the drives still be Unmountable? Not if you fix the read errors issue. Quote Link to comment
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