On 07/24/2014 03:44 PM, David Guyot wrote: > Hello, there. [...] > I checked RAID attributes: I > got a full scale reading on the read error rate on one of the two disks > — in fact a 2^16 value, so I assumed this was a positive integer > counter which reached its full scale reading — but this value disappeared > when I tried to investigate and dropped back to zero. Already a problem > because, as far as I know, this value just can't decrease, only increase; > am I right to suspect a faulty hard disk ? If it is a Hitachi, the raw read error rate can switch between 0, 1, and the 2^16 without the disk being faulty. My only Hitachi disk also does this and works quite well. I also remember seeing some blog/article on the Internet explaining this behaviour but I do not currently find it. Considering the rest of your issues, I do not know, but the slowness is definitely a bad sign. Is a simple reboot an option? HTH Linux-Fan
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