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Re: FC5, getting ata2: command 0x25 timeout, stat 0x50 host_stat 0x4

On Monday 17 April 2006 15:56, Andy Campbell wrote:
> My install of FC5 will work quite happily for a while, any where from
> 20mins
> to a couple of hours and then it will essentially hang, I can run
> commands but
> they take a VERY long time to execute.
> On the console I get the following message ....
> ata2: command 0x25 timeout, stat 0x50 host_stat 0x4
> All references I've found on the web seem to suggest its a drive failing,
> but I don't believe this is the case, as FC4 is still running very
> stably from
> another partition on the same drive, and I've run the Hitachi diagnostic
> software and it reports no error, neither does SMART report any problems.
> I'm using the a the latest FC5 kernel,  2.6.16-1.2080_FC5smp.

This is exactly what I experienced. But, it was on Centos 4.2. But, I think 
it's very similar. What makes it worse is that it was an active mailserver. 
The problems occurred when users complained that they cannot receive any 
mails anymore.

When I looked deeper into the log, I've got those timed outs too. And after 
few hours, the problem got worsened that the /home partition became 

So, I setup a replacement server, and moved the troubled server onto my desk 
(out of the server room)... and this was what amazed me: it RUNS ok! Running 
smartcl check several times gave no error at all! I test the server for a 
week, and it's still ok.

So, the only thing that I can think of that causing it is that I place the 
server too close to the UPS (less than 50cm). So, the electromagnetic 
disturbance must have affected the memory of the server.

Maybe you've got something that affects the memory too?

Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial 
17:06:13 up 8:31, 2.6.15-1.2054_FC5 GNU/Linux 
Let's use OpenOffice. http://www.openoffice.org

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