Husker_N7242C Posted November 2, 2023 Share Posted November 2, 2023 Hi guys, I recently added a new parity disk, rebuilt parity ok then a couple of days later I had an issue with a power cable which caused read errors on multiple disks. I shut down the server prior to any disks being disabled and I replaced the bad cable. After replacing the cable and rebooting disk4 is unmountable. Parity should be valid, but contents of disk aren't being emulated. I don't understand why. I tried running xfs_repair -n /dev/sdp twice but the disk hasn't come good. Is there a way to emulate the disk so that i can copy the data to other disks and try re-formatting the unmountable disk? Attached is a screenshot of the GUI and diagnostics. Thanks in advance nas-diagnostics-20231102-1954.zip Quote Link to comment
Solution JorgeB Posted November 2, 2023 Solution Share Posted November 2, 2023 1 hour ago, Husker_N7242C said: I tried running xfs_repair -n /dev/sdp twice but the disk hasn't come good. Using /dev/sdX won't work, use the GUI, see check filesystem, and run it without -n or nothing will be done. Quote Link to comment
Husker_N7242C Posted November 2, 2023 Author Share Posted November 2, 2023 Thanks so much for your help @JorgeB. It is up and running again with only 2 files in lost and found, most data looks intact. Are you able to shed any light on why the parity didn't emulate the disk contents in this instance? Quote Link to comment
JorgeB Posted November 2, 2023 Share Posted November 2, 2023 It's not that uncommon for a disk that had read/writes errors or got disabled to need a filesystem check, probably some lost writes. Quote Link to comment
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