Having backup my data somewhere, I had recently changed all my HDDs and SDD in my array and cache, and started as new config.
I have had issues completing the parity check/build.
All smart checks on disks passed. I checked the cables and reseated them for good measures; and parity would run overnight and seem to 'hang', leaving me no choice but to power cycle. Parity sync/rebuild would start fast (200MB/sec), and degrades to around 10MB/sec and - no progress even if I leave it overnight. At this stage, I can't get response from GUI (cancel the sync), nor get a diagnosis report.
I notice I have high Disk Shift in some of my Disk's SMART, but thats all I see.
This went on for past two weeks and I can't seem to understand why. Hopefully someone here can help me out.
I did SMART tests on all disk and they turn out okay. I just restarted the parity sync, with new config, I attached diagnostic I managed to capture just when the parity-sync starts to degrades to around 20MB/sec.
Thanks.
planetdata-diagnostics-20211023-0940.zip