August 5, 2025Aug 5 Author 1 hour ago, JorgeB said:That looks OK, please post current diags after array start.ok here's the diagnostics that i downloaded after fresh system reboot and array start server-diagnostics-20250805-1402.zip
August 5, 2025Aug 5 Community Expert Disk3 still has data corruption:Aug 5 14:00:23 Server emhttpd: NAME STATE READ WRITE CKSUMAug 5 14:00:23 Server emhttpd: disk3 ONLINE 0 0 0Aug 5 14:00:23 Server emhttpd: /dev/md3p1 ONLINE 0 0 0Aug 5 14:00:23 Server emhttpd: errors: 2 data errors, use '-v' for a listThis needs to be resolved first; you would need to move any data from this disk elsewhere and reformat it.
August 8, 2025Aug 8 Author On 8/5/2025 at 3:12 PM, JorgeB said:Disk3 still has data corruption:Aug 5 14:00:23 Server emhttpd: NAME STATE READ WRITE CKSUMAug 5 14:00:23 Server emhttpd: disk3 ONLINE 0 0 0Aug 5 14:00:23 Server emhttpd: /dev/md3p1 ONLINE 0 0 0Aug 5 14:00:23 Server emhttpd: errors: 2 data errors, use '-v' for a listThis needs to be resolved first; you would need to move any data from this disk elsewhere and reformat it.i moved the data, formatted the drive, didnt rebuild it from parity, started is as a fresh drive and now it all works. i have two final questions though: 1) what do you think could've caused this and what do i do to prevent this in future? 2) when i run zpool status disk3 -v it shows me less info, compared to other disks1,2,4,5. why is that so? does this mean other disks need to be formatted too because they have some features disabled and only disk3 has them enabled since it is a "newly" installed disk?
August 8, 2025Aug 8 Community Expert 1 hour ago, THEVAN3D said:what do you think could've caused this and what do i do to prevent this in future?Data corruption is typically the result of an underlying hardware issue, but it could also have been another issue, including a zfs bug. Keep monitoring, but if it happens again to the same or a different disk in the near future, it will need investigating.1 hour ago, THEVAN3D said:compared to other disks1,2,4,5. why is that so?That is because the other disks were formatted with an older release. It's not an issue, but you can click on the disks and the "upgrade pool"
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