2002-04-16 16:01:17

by Emmanuel Michon

Subject: periodic scsi hard disk noise due to regular flushes?

Hi,

my recent IBM SCSI drive (18GB IC35L018UWD210-0) connected
to an old Adaptec AHA-2940 UW adapter make as very
irritating high pitched noise (as if it were parking/unparking
his heads?) periodically with the following intervals:

1min35
2min12
5min03
2min14
1min02
4min09
4min14
3min18
1min06
1min04

It runs in ext3, journalling has commit interval set to 5sec.

Does something happen in the kernel with a about 1min05 interval?

Is there some way to keep it busy?

My kernel is 2.4.7-10

Thanks for any reply to this strange request ;-)

--
Emmanuel Michon
Chef de projet
REALmagic France SAS
Mobile: 0614372733 GPGkeyID: D2997E42

2002-04-16 23:29:58

by Michael Clark

Subject: Re: periodic scsi hard disk noise due to regular flushes?

Sounds like TCAL (Thermal Recalibration) - some drives are quite noisy
when doing this. I had an Hitachi drive that would do this every 30
seconds once it warmed up. Could be a faulty thermo sensor on the drive.

~mc


Emmanuel Michon wrote:

>Hi,
>
>my recent IBM SCSI drive (18GB IC35L018UWD210-0) connected
>to an old Adaptec AHA-2940 UW adapter make as very
>irritating high pitched noise (as if it were parking/unparking
>his heads?) periodically with the following intervals:
>
>1min35
>2min12
>5min03
>2min14
>1min02
>4min09
>4min14
>3min18
>1min06
>1min04
>
>It runs in ext3, journalling has commit interval set to 5sec.
>
>Does something happen in the kernel with a about 1min05 interval?
>
>Is there some way to keep it busy?
>
>My kernel is 2.4.7-10
>
>Thanks for any reply to this strange request ;-)
>