-Original Message-
From: lustre-discuss-boun...@lists.lustre.org
[mailto:lustre-discuss-boun...@lists.lustre.org] On Behalf Of John Hanks
Sent: giovedì, 18. agosto 2011 05:55
To: land...@scalableinformatics.com
Cc: lustre-discuss@lists.lustre.org
Subject: Re: [Lustre-discuss] Swap over lustre
On Thu, Aug 18, 2011 at 12:36 AM, Temple Jason jtem...@cscs.ch wrote:
Hello,
I experimented with swap on lustre in as many ways as possible (without
touching the code), and had the shortest path possible to no avail. The code
is not able to handle it at all, and the system always hung.
] Swap over lustre
On Wed, Aug 17, 2011 at 8:57 PM, Joe Landman
land...@scalableinformatics.com wrote:
On 08/17/2011 10:43 PM, John Hanks wrote:
As a rule of thumb, you should try to keep the path to swap as simple as
possible. No memory/buffer allocations on the way to a paging event if
you
on behalf of John Hanks
Sent: Thu 8/18/2011 7:30 AM
To: Temple Jason
Cc: lustre-discuss@lists.lustre.org
Subject: Re: [Lustre-discuss] Swap over lustre
On Thu, Aug 18, 2011 at 12:36 AM, Temple Jason jtem...@cscs.ch wrote:
Hello,
I experimented with swap on lustre in as many ways as possible
Hi,
I've been trying to get swap on lustre to work with not much success
using blockdev_attach and the resulting lloop0 device and using
losetup and the resulting loop device. This thread
(http://www.mail-archive.com/lustre-discuss@lists.lustre.org/msg00856.html)
claims that it works, but in all
On 08/17/2011 10:43 PM, John Hanks wrote:
Hi,
I've been trying to get swap on lustre to work with not much success
using blockdev_attach and the resulting lloop0 device and using
losetup and the resulting loop device. This thread
On Wed, 2011-08-17 at 22:57 -0400, Joe Landman wrote:
The lustre client (and most NFS or even network block devices) all do
memory allocation of buffers ... which is anathema to migrating pages
out to disk. You can easily wind up in a death spiral race condition
(and it sounds like you are
On Wed, Aug 17, 2011 at 8:57 PM, Joe Landman
land...@scalableinformatics.com wrote:
On 08/17/2011 10:43 PM, John Hanks wrote:
As a rule of thumb, you should try to keep the path to swap as simple as
possible. No memory/buffer allocations on the way to a paging event if
you can possibly do
On 08/17/2011 11:42 PM, David Dillow wrote:
On Wed, 2011-08-17 at 22:57 -0400, Joe Landman wrote:
The lustre client (and most NFS or even network block devices) all do
memory allocation of buffers ... which is anathema to migrating pages
out to disk. You can easily wind up in a death spiral
On 2011-08-17, at 8:43 PM, John Hanks wrote:
I've been trying to get swap on lustre to work with not much success
using blockdev_attach and the resulting lloop0 device and using
losetup and the resulting loop device. This thread
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