detecting bad disks

2007-11-08 Thread Derick Siddoway
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

Re: detecting bad disks

2007-11-08 Thread Steve Shockley
knitti wrote: - SMART didn't catch the errors. no monitoring is perfect, but it seems unlikely that it won't notice read errors Also, SMART thresholds are defined by the vendor. Setting them too high reduces the number of warranty claims. You'll notice wd1 has raw read errors and

Re: detecting bad disks

2007-11-08 Thread Chris Cappuccio
All drives develop read errors over time. When you write to these blocks, it may automatically remap them and the errors disappear. Just because you get some read errors doesn't meant the drive is necessarily about to die. But if you develop new bad blocks with any frequency, you might want to

Re: detecting bad disks

2007-11-08 Thread knitti
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

Re: detecting bad disks

2007-11-08 Thread michael hamerski
try a new IDE cable or if you can take the system offline, and assuming you can boot off cd/floppy I would suggest trying MHDD from http://hddguru.com/ it does some pretty nice low-level diagnostics. I've fixed some disks with this {crosses fingers} docs are very basic but there's more info on

Re: detecting bad disks

2007-11-08 Thread Martin Schröder
2007/11/8, Derick Siddoway [EMAIL PROTECTED]: the filesystem. What's the best way to do this short of monitoring? sysutils/smartmontools Best Martin