Stan Hoeppner wrote: > Ludovico Cavedon put forth on 3/18/2010 6:03 PM: >> Stan Hoeppner wrote: >>> Is there a SATA backplane involved or is each drive cabled directly to the >>> controller? If backplane, is it active or passive? Whose product is it? >> no backplance. >> This is the machine >> http://www.supermicro.com/products/system/2U/6026/SYS-6026T-URF.cfm > > It most certainly does have a backplane, and an active backplane at that. Uhm, yes, you are right, it has a backplane with SES-2 over I2C support. At first I though that backplanes were used only on external enclosures. > drive failures, etc. Have you configured an I2C module to monitor the > backplane? If so, check those logs. If not, do so now. It's possible that Unfortunately the I2C connectors on the backplane are not connected to anything. The motherboard has a "IPMB I2C" connector", but I guess I cannot connect a generic I2C device... I should probably get a USB-I2C module... Btw, once I am able to access the I2C device on the backplane, what tool is able to query the state? I am having troubles finding documentation about that. lm-sensors does not seem to mention that... Is the ses kernel module able to work over i2c? > the backplane controller is erroneously kicking the drives off-line. This > could explain the SATA bus errors. It's also possible there is a problem > with the backplane controller chip itself or other circuitry on the PCB > causing problems. I see. >>> Is this a relatively new machine or has it been running for some months >>> without problems until recently? >> It is new machine, running only for two months. > > You need to call SuperMicro support and tell them about your issue. Makes sense. > Backplane boards are relatively cheap. Get them to send you a warranty > advance replacement backplane and see if that fixes the problem. If you're > not a hardware person, replacing it may not be a job for you. In that case, That would not be a problem. Thank you for the information! Cheers, Ludovico -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
