Read errors, recovery thread. What does it mean?


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During a parity check on a dual parity system the follwing errors popped up in syslog 64 times. I can see that in the error column of the main page. SMART shows one pending sector to remap. But Unraid stiil runs the parity check. What does that mean? Are these errors fixed?

 

Sure I will replace that drive, but I'm curious what's the meaning of that.

 

Thanks.

 

Jan 10 11:17:48 Tower2 kernel: sd 8:0:23:0: [sdx] Write cache: enabled, read cache: enabled, supports DPO and FUA
Jan 10 11:19:00 Tower2 kernel: md: recovery thread: recon D19 ...
Jan 10 11:21:27 Tower2 kernel: md: disk0 read error, sector=37066176
Jan 10 11:21:27 Tower2 kernel: md: recovery thread: multiple disk errors, sector=37066176
Jan 10 11:21:27 Tower2 kernel: md: disk0 read error, sector=37066184
Jan 10 11:21:27 Tower2 kernel: md: recovery thread: multiple disk errors, sector=37066184
Jan 10 11:21:27 Tower2 kernel: md: disk0 read error, sector=37066192
Jan 10 11:21:27 Tower2 kernel: md: recovery thread: multiple disk errors, sector=37066192

 

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