January 15, 20188 yr Howdy Yall, I ran into an interesting issue today, I started seeing some parity errors with my unraid server out of the blue over the weekend. [Sat Jan 13 16:28:10 2018] md: recovery thread: P incorrect, sector=1953547096 [Sat Jan 13 16:28:14 2018] md: recovery thread: PQ incorrect, sector=1954021656 [Sat Jan 13 16:28:17 2018] md: recovery thread: Q incorrect, sector=1954407368 [Sat Jan 13 16:28:18 2018] md: recovery thread: PQ incorrect, sector=1954528768 [Sat Jan 13 16:29:32 2018] md: recovery thread: Q incorrect, sector=1963910384 I started looking into the issue today and noticed that my link speeds are all over the place. I did some diagnosis and on some reboots I get the expected 3GB link speeds but most times I see a mix of speeds. I have replaced all SAS cables going to backplane, from SAS expander to SAS2008 card. I have bypased the SAS expander and moved to plugging backplane directly into SAS cards and they all link up at 6GB. I ordered a new Intel SAS expander since that is the last component I havent replaced yet. Interesting thing I noticed is that on the same backplane 3 drives link up at 3GB while the last one links up at 1.5GB. Anyone run into this before? *All SAS2008 and HP Expander running current FW *Reset BIOS settings *Drained "flea power" Thanks! Edited January 16, 20188 yr by klamath
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