I am working on project which involve automated HDD testing through smartctl.

The station is working fine on most product, but I have two specific products that fail the smartctl test.

Those two product are both WD product (WD2500BUDT series)

Smartctl behaviour is quite strange, in fact the test is launched without any problem, i wait about 2min (test length), and when i check the smartctl, i have got no result at all.

It's like I hadn't launched any test (no fail, no success in smartctl result). No error return on command, nothing in syslog, ..

As i said before, the test is working for other product, thousands products worked well with this test.

The main smartctl command used are :

smarctl -t shortest /dev/sdX #Launch test 
smartctl -l selftest /dev/sdX #Look at test result

I have tried to use:

smartctl -s on /dev/sdX

or

smartctl -o on /dev/sdX

But doesn't change anything.

The system is using Debian 6.0, smartctl v5.40 (rev 3124) x86_64, HDD are plug through SATA to PCI controller. I have 4 HDD connected at a time.

Well if anyone has some hints to give with this problem, because I have no idea how can i fix this.

Thanks in advance.

PS: Not sure if it was a serverfault topic, sorry if i was wrong!