[cgl_discussion] Re: ATCA Requirements Take 2

[Eric.Chacron at alcatel.fr]

>Requirement: ATCA IPMI Support

>The IPMI system shall implement the new IPMI commands, data structures,
>and sensors defined in the ATCA specification.

OK but are you sure this is a requirement for Linux (IPMI protocol in not
specified by CGL )!


>Requirement: Block Device Removal
>
>The Linux kernel should allow removal of a block device while it is in
>use without degrading reliability of the system.  The block device shall
>be removeable even if in use by an open file (fdisk /dev/sda), a raid
>volume, or a filesystem or multiples thereof.

Could you explain the objective you see in this requirement ?
What has to be handled by Linux kernel in that precise case ?
What will be the behavior for open files at file system and at end user
levels ?


>Requirement: shutdown systemcall integrated with ATCA system management
>
>The Linux kernel shall ensure that the  shutdown system call uses the
>ATCA system management IPMI interface to power down the system and light
>the blue led.

I propose to precise "light the (hot swap) blue led when the system ihas
been cleanly shut down"






Steven Dake <sdake at mvista.com> on 09/09/2003 11:54:58 PM

Please respond to sdake at mvista.com

To:    cgl_discussion at osdl.org, Eric CHACRON/FR/ALCATEL at ALCATEL,
       jjg at pt.com, Richard.Somes at fci.com
cc:
Subject:    ATCA Requirements Take 2


Folks

Here is take 2 of the requirements for ATCA.

Requirement: ATCA IPMI Support

The IPMI system shall implement the new IPMI commands, data structures,
and sensors defined in the ATCA specification.

Requirement: Block Device Removal

The Linux kernel should allow removal of a block device while it is in
use without degrading reliability of the system.  The block device shall
be removeable even if in use by an open file (fdisk /dev/sda), a raid
volume, or a filesystem or multiples thereof.

Requirement: shutdown systemcall integrated with ATCA system management

The Linux kernel shall ensure that the  shutdown system call uses the
ATCA system management IPMI interface to power down the system and light
the blue led.

Requirement: Multiple Host Syncronized Device Hotswap

When multiple hosts are using the same block or character device, and a
user requests to remove the device, the device's blade wont be powered
off and if a blue led is available, lit, until all systems in the
collection of machines using the device have removed the device from
their respective Linux kernel data structures.








Steven Dake <sdake at mvista.com> on 09/09/2003 11:54:58 PM

Please respond to sdake at mvista.com

To:    cgl_discussion at osdl.org, Eric CHACRON/FR/ALCATEL at ALCATEL,
       jjg at pt.com, Richard.Somes at fci.com
cc:
Subject:    ATCA Requirements Take 2


Folks

Here is take 2 of the requirements for ATCA.

Requirement: ATCA IPMI Support

The IPMI system shall implement the new IPMI commands, data structures,
and sensors defined in the ATCA specification.

Requirement: Block Device Removal

The Linux kernel should allow removal of a block device while it is in
use without degrading reliability of the system.  The block device shall
be removeable even if in use by an open file (fdisk /dev/sda), a raid
volume, or a filesystem or multiples thereof.

Requirement: shutdown systemcall integrated with ATCA system management

The Linux kernel shall ensure that the  shutdown system call uses the
ATCA system management IPMI interface to power down the system and light
the blue led.

Requirement: Multiple Host Syncronized Device Hotswap

When multiple hosts are using the same block or character device, and a
user requests to remove the device, the device's blade wont be powered
off and if a blue led is available, lit, until all systems in the
collection of machines using the device have removed the device from
their respective Linux kernel data structures.