On 11/8/07, Derick Siddoway <[EMAIL PROTECTED]> wrote: > Trying to copy a file from one filesystem to another, I kept getting > input/output errors. I noticed these messages in the logs: > > wd1a: uncorrectable data error reading fsbn 768416 of 768384-0 (wd1 bn > 768416; cn 762 tn 5 sn 5), retrying > wd1a: uncorrectable data error reading fsbn 768416 of 768384-0 (wd1 bn > 768416; cn 762 tn 5 sn 5), retrying >...
> However, when I run this by hand, I get > > [EMAIL PROTECTED]:$ sudo /sbin/atactl /dev/wd1 smartstatus > No SMART threshold exceeded > > So clearly, the SMART stuff wasn't going to tell me about this. > > ... > I see a number of values that exceed the preset threshholds. > But I see the same kinds of values on the other three drives: not all SMART thresholds define an "upper" value, some values are a sort of "quality measurement" and go downwards. Indeed indicate your SMART values no error. Two possibilites: - SMART didn't catch the errors. no monitoring is perfect, but it seems unlikely that it won't notice read errors - there is everything OK with the disk, but something else is not. Try a different cable, look for faulty RAM or a dying PSU. Put the disk into another machine and look whether you can read everything fine. --knitti
