Strange HDD behavior?
On 12/10/08 7:51 AM, Brian McKee wrote:
> On Wed, Dec 10, 2008 at 3:07 AM, Amichai Rotman<email@example.com> wrote:
>> Now all is OK, but I noticed my Kubuntu 8.04.1 box's HDD led is blinking
>> franticly for ours.
> Is that for hours?
>> I ran the top command and I see 'kjournald' is high on the list, often at
>> the top of it...
> kjournald is related to the journal for ext3. What do you see in
> /var/log/messages or syslog?
> To do a quick hard drive health check you could also install
> smartmontools and run sudo smartctl -AH /dev/sda
> Note that SMART isn't perfect - in my experience a drive marked bad is
> going to die, but a drive that it says is ok could still have issues.
I can definitely vouch for the last statement about a SMART tool stating
a drive is OK, but in reality it is not. As an anecdote, I recently had
to RMA one of my hard drives. It is a Western Digital, only ~ 2 years
old that wound up exhibiting the "click of death". It had momentarily
performed the click during an earlier reboot, but I was able to get the
drive up. After that episode, I downloaded WD's hard drive check tool
and checked the SMART status and also performed the "quick" test (which
checks for everything except for bad sectors). The utility gave the
drive a clean bill of health. I backed up the data anyhow, and on the
next reboot, the drive was dead for good.
So, yes, if a SMART utility deems a drive is bad, it almost certainly
is. But, if it says a drive is OK, it might not actually be OK. It
should only be one of many tools in your trouble-shooting arsenal.
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