Hi, I''ve been investigating several options for implementing AoE on a small farm. I was looking at qaoed ( http://code.google.com/p/qaoed/ ). It has not moved in a while and has a few lingering but minor open bugs but seems rather well written and flexible. The farm will be about 8 nodes, each having 15 - 30 paravirtualized Linux guests using local swap (a small drive in each node provides this). I''ll be making the usual tweaks to AoE, just looking for something to put on the NAS that I can install and (usually) forget about. Cheers, --Tim -- Monkey + Typewriter = Echoreply ( http://echoreply.us ) _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
>I''ve been investigating several options for implementing AoE on a small >farm.Although no help to your question, I have followed AoE and iSCSI and wonder what advantage AoE has over iSCSI if any and why you wouldn''t use iSCSI? Just curious... jlc _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Silly question but where is it ? I have downloaded the 3.3.0 source code and cannot see it ? I have compiled the 3.3.0 code and the server boots fine, but when it tries to start a DOM-U it complains about pygrub. Regards, -- --[ UxBoD ]-- // PGP Key: "curl -s http://www.splatnix.net/uxbod.asc | gpg --import" // Fingerprint: F57A 0CBD DD19 79E9 1FCC A612 CB36 D89D 2C5A 3A84 // Keyserver: www.keyserver.net Key-ID: 0x2C5A3A84 // Phone: +44 845 869 2749 SIP Phone: uxbod@sip.splatnix.net -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
AOE has lower overhead than iSCSI because it''s done at Layer 2 instead of Layer 3. There''s not IP protocol, no routing, etc., to worry about in AOE, which results in lower latencies and faster throughput. In my experience, however, this is not a significant enough difference to push me to AOE. Furthermore, I''ve had occasion to use iSCSI in a fashion where having it "routeable" was quite useful and I would have be severely hampered had I been using AOE. Also, the amount of iSCSI software and hardware out there, and the maturity of iSCSI seems like another benefit over AOE. I''m not saying AOE is bad or the wrong option, just that iSCSI is much more widely accepted across the data storage industry, so you''re more likely to find vendors that support it, build stuff for it, and/or write software compatible with it. My two cents... -Nick>>> On Fri, Aug 29, 2008 at 10:19 AM, "Joseph L. Casale" <JCasale@activenetwerx.com> wrote:>I''ve been investigating several options for implementing AoE on a small >farm.Although no help to your question, I have followed AoE and iSCSI and wonder what advantage AoE has over iSCSI if any and why you wouldn''t use iSCSI? Just curious... jlc This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Fri, 2008-08-29 at 10:19 -0600, Joseph L. Casale wrote:> >I''ve been investigating several options for implementing AoE on a small > >farm. > > Although no help to your question, I have followed AoE and iSCSI and wonder > what advantage AoE has over iSCSI if any and why you wouldn''t use iSCSI?A few reasons: 1 - I don''t need iSCSI, this is a completely trusted network. Basic MAC based ACL''s keep oopses from happening, that''s all I need. 2 - Dom-0 is going to be _tiny_, iSCSI has a rather large control plane that resides in userspace (as it should), however I can escape this to a degree with AoE. Dom-0 is going to be initiating and backing the targets for the guests. 3 - Its much easier to hand over with AoE, since I need to give instructions that any novice can follow in order to scale. 4 - The switches are good quality :) The advantages are that AoE sends only ATA commands without the overhead of TCP. When working on a completely trusted network .. it can be rather practical. Since each node has 2 nics (one private), it seemed like the best idea. I have low I/O expectations, but need to achieve high density in regards to guests per node. Nothing against iSCSI, AoE is just the right tool for this particular job. Cheers, --Tim -- Monkey + Typewriter = Echoreply ( http://echoreply.us ) _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
See xen-3.3.0/stubdom/README and /etc/xen/xmexample.pv-grub. On Fri, Aug 29, 2008 at 1:35 PM, --[ UxBoD ]-- <uxbod@splatnix.net> wrote:> Silly question but where is it ? I have downloaded the 3.3.0 source code and cannot see it ? I have compiled the 3.3.0 code and the server boots fine, but when it tries to start a DOM-U it complains about pygrub. > > Regards, > > -- > --[ UxBoD ]-- > // PGP Key: "curl -s http://www.splatnix.net/uxbod.asc | gpg --import" > // Fingerprint: F57A 0CBD DD19 79E9 1FCC A612 CB36 D89D 2C5A 3A84 > // Keyserver: www.keyserver.net Key-ID: 0x2C5A3A84 > // Phone: +44 845 869 2749 SIP Phone: uxbod@sip.splatnix.net > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >-- Marco Sinhoreli _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Fri, Aug 29, 2008 at 12:35 PM, --[ UxBoD ]-- <uxbod@splatnix.net> wrote:> Silly question but where is it ? I have downloaded the 3.3.0 source code and cannot see it ? I have compiled the 3.3.0 code and the server boots fine, but when it tries to start a DOM-U it complains about pygrub. >Also see this thread: http://lists.xensource.com/archives/html/xen-devel/2008-08/msg00978.html Notice the patch to the xmexample.pvgrub and also the fact that tap:aio doesn''t work with pvgrub as of the release. Cheers, Todd -- Todd Deshane http://todddeshane.net check out our book: http://runningxen.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
hi does anyone use xenprobes? has xenprobes been integrated into xen source code or where could download it? Thanks _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users