[lkml]   [2007]   [Oct]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] ata: ahci: Enable enclosure management via LED (resend)
On Thu, October 25, 2007 07:58, Jeff Garzik wrote:
> Kristen Carlson Accardi wrote:
>> Enable enclosure management via LED
>> As described in the AHCI spec, some AHCI controllers may support
>> Enclosure management via a variety of protocols. This patch
>> adds support for the LED message type that is specified in
>> AHCI 1.1 and higher.
> Comments:
> 8) when is this actually used? do you have a sample user in userspace?
> does a userspace daemon watch disk activity and manage LEDs somehow?
> I'm a bit cloudy on the usage need of this.

I think the idea is that if mdadm (for example) kicks out a faulty disk
from an array, it could also activate a LED (usually a different LED than
the "disk activity" LED) on the corresponding enclosure so that the admin
knows when standing in front of the storage server which disk to pull out
and replace.

David Härdeman

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-10-25 09:37    [W:0.049 / U:5.068 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site