Hi All,
I am trying to understand why my weekly parity check speed was suddenly divided by 6 after replacing a disk causing errors.
I spent hours and hours on internet and on this forum looking for tips or advice on how to fix this, but nothing worked so now I post this message.
First you can see on parity check history the problem. On june 25, I had a power cut. I was out of the town and tried mulitple times to fix it remotely. On june 27 I was finally home and restarted my server and fix the issue. My server was off between june 25 and june 27.
After the fix (array off, automatic fix by unraid), the speed of parity check suddenly felt down. And I don't know why.
First I tried to reorganize disk positions on my motherboard and PCIe SATA controller. (parity disk directly on motherboard sata controller and data disk on pcie sata controller). No change !
Now I try to investigate mdadm command but it looks different to what I see on posts and cannot understand it correctly.
For example:
do you know what is sbsynced2 and mdResyncAction status 'Q'... ?
I have posted diagnostics file if it helps.
To conclude, everything is working fine (docker, services etc..) but slower than before. Lot slower than before !! I can notice it on evey restart especially with my pihole docker which cannot respond dns request on time during multiple minutes or dns service very very slow during parity check. It never happend before.
So I assume my unraid is not running at the right speed and something is going wrong. Please help.
Tapodufeu, unraid lover for months
tower-diagnostics-20200823-0949.zip
