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--- Log opened Fri May 13 23:59:01 2005
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03:15 < Squink> anyone got any ideas on how I'd check the amount of diskspace i have in xenU ?
03:15 < Squink> because it's saying i'm all out, although i've not used more than say, 1.5 gig
03:15 < Squink> (on an 80 gig disk)
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03:57 < Squink> nm, figured it out ;)
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08:18 < grifferz> I don't suppose it is possible to export another block device to a domU without restarting the domU is it?
09:28 < tessier> Squink: df command?
09:41 < knewt> grifferz: xm vbd-create
09:42 < knewt> can't remember if it works currently with a 2.6 guest though, so you'd have to try it out
09:42 < grifferz> ok thanks
10:20 < tessier> What should I set mem= on my dom0 to? My machine has 512M of RAM but I doubt that is the value I want to put there.
10:20 < tessier> I would hate to leave even a single kilobyte unused.
10:27 < tessier> And anyone know what's up with the mailing list? I have tried twice to subscribe but it says the list subscription is moderated and apparently my subscription never gets approved.
10:31 < knewt> not sure. i just subscribed a test address temporarily and it worked fine. admittedly i did it direct via email, bypassing the web form, but it should work fine either way
10:32 < tessier> ah...maybe the web form is broken somehow. I will try the direct address.
10:32 < knewt> which list was it you were trying? xen-announce, xen-users, xen-devel or xen-changelog
10:33 < knewt> you know the lists aren't on sourceforge any more of course?
10:33 < tessier> The first three.
10:34 < knewt> to subscribe easily via email, just send a blank email to xen-[whatever]-subscribe@lists.xensource.com
10:34 < knewt> no subject or body required
10:34 < knewt> i prefer using email, as even if the web form is of the older variety requiring you to supply a password, subscribing via email will generate a random password for you
10:42 < tessier> I tried signing up onthe web again, no emails back. I just sent emails to the subscribe addresses.
10:44 < knewt> if your own email server is fast, you should get back a reply within a few seconds
10:55 < tessier> It is quite fast.
10:55 < tessier> Still no emails. :(
10:56 < tessier> Just checked the junkmail folder. Not there either.
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12:26 < yarihm> esser sii
12:27 < yarihm> grml ... hi everyone :)
12:33 < tessier> Hi :)
12:44 < tessier> What does VBD stand for?
12:44 < knewt> virtual block device
12:44 < tessier> ah
12:45 < tessier> Does the vbd actually get mounted by domain0?
12:45 < tessier> And then mounted again somehow but the domain that will really use it?
12:45 < tessier> Just reading the wiki...it's not clear
12:45 < tessier> oh, nevermind
12:45 < tessier> This is iscsi
12:45 < tessier> Domain Us iSCSI root
12:45 < tessier>     *
12:45 < tessier>       direct - need to try this.
12:45 < tessier>     *
12:45 < tessier>       mounted by domain 0, exported as VBD
12:46 < tessier> So by "mounted" they don't really mean mounted as an fs I think.
12:46 < knewt> it doesn't get "mounted", as you don't mount block devices, you mount file systems. it gets "opened", just like you would if you accessed a block device using something like dd
12:46 < tessier> Just seen by iscsi in domain0 and made a block device which is then made a vbd to the other domain
12:46 < tessier> ah, I see
12:47 < Tv> tessier: yeah, the wiki says "mounted" when it means "is a block device"
12:47 < Tv> I think I'll try to fix that right now
12:47 < tessier> Another question: How do I know how big to set mem= to? My machine has 512M of RAM but I have a feeling I don't want to tell xen I have exactly 512 because somewhat less than that is likely to be usable by it.
12:47 < Tv> if the wiki search would tell me what page said that :(
12:47  * tessier is quite interested in building a xen cluster with some sort of networked disk backing
12:48 < tessier> I'll get you the url..
12:48 < Tv> silly thing, enter searches titles only
12:48 < tessier> http://wiki.xensource.com/xenwiki/XenStorage#head-815bd5c2badd35a80c2458983738993a856d2db7
12:48 < Tv> found it
12:48 < Tv> bah, "Immutable Page"
12:48 < Tv> nice _wiki_
12:48 < knewt> Tv: are you logged in?
12:48 < Tv> no
12:48 < knewt> you need to be logged in to edit the wiki pages
12:49 < Tv> I don't need Yet Another crappy userid I do nothing with.
12:49 < tessier> heh
12:50 < Tv> well, fix that to say s/mounted by domain 0/iscsi drivers in dom0 provide block a device/
12:50 < tessier> Unfortunately wiki spammers have made it a requirement to have logins for wikis
12:50 < Tv> no
12:50 < Tv> logins are required by bad design
12:50 < Tv> human-only challenges can be one-time
12:51 < knewt> the problem is that a lot of wiki spammers /are/ human
12:52 < Tv> huh?
12:52 < Tv> "wiki spam" commonly means bot-added links to porn/viagra/etc websites
12:52 < knewt> a lot of the spam on wikis isn't added by spam software, there are actually lots of people out there manually entering spam into wikis
12:52 < tessier> In addition to what is a valid argument to mem= I am wondering if memory can be "oversubscribed" since a lot of my domains won't be active for very but do need to be running for when a packet does come in.
12:52 < Tv> well, they can register accounts too
12:53 < tessier> Especially for a lot of my development environments etc.
12:53 < Tv> tessier: you can't really oversubscribe well enough (yet), though ballooning may help a bit
12:53 < Tv> tessier: provide swap to domUs
12:53 < tessier> Tv: But it should be theoretically possible in the future?
12:54 < Tv> tessier: it's possible even now (1GB RAM, start 512MB domU, balloon to 128MB, repeat)
12:54 < knewt> tessier: are you running -unstable?
12:54 < tessier> Tv: Yes, I could do that. They won't be as fast as they would be if I could oversubscribe RAM and let Xen do the swapping somehow though.
12:54 < tessier> knewt: Runing stable.
12:54 < Tv> tessier: it's just that they need the full 512MB when they start
12:54 < Tv> tessier: swapping is swapping, why would there really be a speed difference?
12:55 < knewt> tessier: mem isn't an option in -stable xen, it was only just added to -unstable. there's dom0_mem - is that what you mean?
12:56 < tessier> I mean if I make a domain with 128M and then give it 128M swap so it can run its apps it will always be swapping a lot. Whereas if I could create a domain with 256M of RAM and oversubscribe the RAM the domain I happen to be using at the moment could fit everything into RAM and some other domain might get swapped out. 
12:56 < Tv> tessier: the point where that falls apart is this:
12:56 < Tv> tessier: linux sees it has 256MB of RAM and decides to use 160MB as disk cache
12:56 < knewt> you can move memory between domains, so you /can/ oversubscribe, but at a single point in time you can't have more memory actually given to each domain than really exists
12:57 < Tv> tessier: xen swap trashes badly
12:57 < tessier> knewt: I am running xen-2.0.5
12:57 < tessier> knewt: Bummer. That means the domains I am not currently using will suck up valuable ram. Oh well. RAM is cheap.
12:57 < knewt> it's possible to have a process in dom0 that dynamically moves memory about depending on need, but it doesn't exist currently
12:57 < Tv> tessier: balloon them down
12:58 < tessier> "sparse" RAM might be kinda cool.
12:58 < Tv> tessier: when you really need them, balloon them up
12:58 < tessier> Tv: And then balloon them back up again when I need them?
12:58 < tessier> I see. I guess that will work.
12:58 < tessier> I am running 2.0.5 and need to provide both dom0_mem to set the size of dom0 and also a mem= option to set the max size. 
12:58 < knewt> if you don't actually need them, why not just suspend them?
12:59 < tessier> It would be nice to be able to just ssh to them and have them ready intead of having to go start them.
13:00  * Tv . o O ( an app in dom0 could do automagic resume when it sees network traffic to a domain.. )
13:00 < Tv> like wake-on-lan on drugs :)
13:00 < tessier> heh
13:02 < tessier> I guess I'll try setting mem=512M and see what happens.
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14:37  * tessier wonders why his balloon command is having no effect
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16:06 < tessier> lilo!
16:06 < tessier> lilo: Ever get your asterisk system working?
16:07  * tessier notices the xen binary distribution kernel cannot open his crypto-loopback filesystem :(
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22:20 < soffi> hey rusty man
22:20 < rusty> Hello!
22:21 < soffi> wassap
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23:27 < rusty> Not much.  Xen Store works
23:27 < soffi> wtf is thast
23:27 < soffi> that
23:28 < riel> rusty: awesome!
23:30 < rusty> riel: now, it just needs to be *used* (oh, and the small detail of what it actually should be used for)
23:30 < soffi> Store with a capital sounds like a brand name, I'm beginning to think it's something technical
23:31  * soffi shuts his mouth and reads xen-devel
23:37 < rusty> soffi: Yes, Xen Store will sell you all your partitioning needs!  This week, DomUs on special!  IT'S CRAZY!
23:38 < yosh> haha
23:38 < yosh> Crazy Rusty's DomUs
23:39 < soffi> rusty: cool, does it accept paypal?
23:39 < soffi> heehe
23:39 < soffi> just caught up on -devel,, I don't read -devel that much
23:40 < soffi> mostly because if I were to participate in that list, all you would get would be nonsense one-liners
--- Log closed Sat May 14 23:59:01 2005