AOE and large filesystems?

AOE and large filesystems?

[Dan Stromberg]

Some questions for the list:

1) Is anyone on the list using AOE in production?

2) Is anyone on the list using AOE in combination with md and/or LVM2?

3) Is anyone on the list using AOE on a 64 bit platform?

Thanks!

Re: AOE and large filesystems?

[Jeff Garzik]

Dan Stromberg wrote:
> Some questions for the list:
> 
> 1) Is anyone on the list using AOE in production?
> 
> 2) Is anyone on the list using AOE in combination with md and/or LVM2?
> 
> 3) Is anyone on the list using AOE on a 64 bit platform?

While I think AoE is "neat", IMO you really want to use something based 
on TCP, even on a LAN...

Your CPU usage w/ zerocopy offload could potentially be lowered w/ TCP, 
in addition to the built-in reliability.

As a tangent, I'd also like to see iSCSI over SCTP.

	Jeff

Re: AOE and large filesystems?

[bert hubert]

On Tue, Apr 05, 2005 at 07:07:46PM -0400, Jeff Garzik wrote:

> As a tangent, I'd also like to see iSCSI over SCTP.

http://ds9a.nl/klogbot/?year=2005&month=3&day=21&hour=12.5 

See conversation between 'nab_' and ahu (me).

-- 
http://www.PowerDNS.com      Open source, database driven DNS Software 
http://netherlabs.nl              Open and Closed source services

Re: AOE and large filesystems?

[Dmitry Yusupov]

On Tue, 2005-04-05 at 19:07 -0400, Jeff Garzik wrote:
> As a tangent, I'd also like to see iSCSI over SCTP.

existing iSCSI over TCP ietf draft just does not fit into SCTP.

There was some activity on IPS recently:

http://www1.ietf.org/mail-archive/web/ips/current/msg01279.html

it ends up with needs for new ietf draft which will describe iSCSI over
SCTP transport.

Dmitry

> 	Jeff
> 
> 
> 
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Re: AOE and large filesystems?

[Pavel Machek]

Hi!

> Dan Stromberg wrote:
> >Some questions for the list:
> >
> >1) Is anyone on the list using AOE in production?
> >
> >2) Is anyone on the list using AOE in combination with md and/or 
> >LVM2?
> >
> >3) Is anyone on the list using AOE on a 64 bit platform?
> 
> While I think AoE is "neat", IMO you really want to use something 
> based on TCP, even on a LAN...

TCP does not work for swapping, unfortunately. And same problem
might be in dirty-page-writeout...
-- 
64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms         

Re: AOE and large filesystems?

[Ed L Cashin]

Dan Stromberg <strombrg@dcs.nac.uci.edu> writes:

> Some questions for the list:
>
> 1) Is anyone on the list using AOE in production?

I don't know of any AoE users that read the lkml.  Except me, of
course.

> 2) Is anyone on the list using AOE in combination with md and/or LVM2?

Yes, most AoE users use md.  Many use LVM2, but a couple have had
trouble with striped volume groups.

> 3) Is anyone on the list using AOE on a 64 bit platform?

People are using AoE on 64 bit platforms and not reading the lkml.  :)

-- 
  Ed L Cashin <ecashin@coraid.com>