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[luv-main] email issues
by Andrew Greig 15 Sep '11

15 Sep '11

I have received 47 messages from luv-main in my main account address - no problem. But I have received the same messages in my secondary address as well - problem. This is new behaviour. Not grumpy, just informative. I am grateful for all of the work that goes into keeping us informed. Andrew Greig

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Re: [luv-main] backkuppc and ZFS and now memlockd too (was Re: Back ups)
by Peter Ross 14 Sep '11

14 Sep '11

Quoting "Chris Samuel" <chris(a)csamuel.org>: > On Mon, 12 Sep 2011 10:32:43 AM Peter Ross wrote: > >> Quoting "Andrew McGlashan" <andrew.mcglashan(a)affinityvision.com.au>: >> >> > including a working fsck ability, which is essential. >> >> It's overrated;-) > > Not on an experimental filesystem which can have some, umm, > interesting bugs at times.. ;-) The fsck looks more magic than everything else to me (because it has to catch "the unexpected") and if you try "magic" on something that is not fully understood yet.. good luck with that. I see your point. At the moment I go for plan B first (backup/failover) instead of praying that magic helps me if it goes pear-shaped. In that sense it may be a waste of time to write a fsck. However, I can imagine that it helps you to improve the original code. If you write fsck you have to think about "what can go wrong" - and then you are half-way through to fix it (and not relying on fsck). I always avoid software that needs "repair tools" in production. E.g. I hated to work with MySQL 3 and having to fix MyISAM tables and indexes if something went wrong. It took me a while until I wanted to touch MySQL again.. These days I do not even remember what the repair tools look like, and I hope I never have to google for it. Regards Peter

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Re: [luv-main] backkuppc and ZFS (was Re: Back ups)
by Chris Samuel 14 Sep '11

14 Sep '11

On Sat, 10 Sep 2011 08:50:43 PM Chris Samuel wrote: > FWIW I attach my homegrown zsnapshot and bsnapshot scripts > in case they are of use.. GPLv3 or later. Now here: https://github.com/chrissamuel/Scripts I've now stopped using ZFS/FUSE and moved to the "ZFS on Linux" DKMS version instead as it seems to be progressing well, so I've modified the zsnapshot script to just use zfs mount/umount. cheers, Chris -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC This email may come with a PGP signature as a file. Do not panic. For more info see: http://en.wikipedia.org/wiki/OpenPGP

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[luv-main] Digest mode broken ?
by Andrew Mather 14 Sep '11

14 Sep '11

Hi, Up until a few minutes ago, I was getting both LUV Main and LUV Talk in digest mode only. In the last few minutes, I have started to receive unbundled messages to LUV Main and on logging into the mailman page, saw that Digest mode was turned off. I have since enabled Digest again. Has something happened with the listserver, or was it just me ? Andrew -- - http://surfcoast.redbubble.com -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- "Computers are incredibly fast, accurate, and stupid; Humans are incredibly slow, inaccurate and brilliant. Together they are powerful beyond imagination." Albert Einstein -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- A committee is a cul-de-sac, down which ideas are lured and then quietly strangled. *Sir Barnett Cocks<http://www.quotationspage.com/quotes/Sir_Barnett_Cocks/> * -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- "A mind is like a parachute. It doesnt work if it's not open." :- Frank Zappa -

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Re: [luv-main] LUV mailing list header changes (was Re: Digest mode broken ?)
by Tony Langdon 14 Sep '11

14 Sep '11

At 06:33 PM 9/14/2011, Tim Connors wrote: >And that damn "[luv-main]" text has been prepended by stealth after years >of arguing for and against. Someone cared so much about it that they >killed the hardware just so they could slip this in? :P Yeah, I did see that. Was a bit like the Spanish Inquisition - I wasn't expecting it :D >(can we fix that setting, pretty please? procmail can easily filter posts >into folders without that, but can't strip the useless text out of the >subject line, at least reliably, and guaranteed to work no matter how >many times the thread bounces back and forth between luv-main and >luv-talk, and how many times people change the subject line of a thread.) Some good points there. Personally, it's never been a big issue for me either way, and even less so now that I've finally got around to filtering on the right header :) 73 de VK3JED / VK3IRL http://vkradio.com

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[luv-main] pacemaker, iscsi, multipath, and filesystem
by James Harper 14 Sep '11

14 Sep '11

I'm testing multipath with iscsi now, and having the multipath infrastructure present means that the actual iscsi device is unusable, you have to go through the multipath device node. This makes perfect sense exact that pacemaker wants to mount the filesystem before multipath has created the device node. I notice there is a Delay agent, but that seems like a bit of a hack - how much of a delay is enough, without waiting unnecessarily long? Any suggestions? This is a followup to my nfs or ocfs2 question... it turns out that nfs failover doesn't work that smoothly due to hanging tcp connections and holding the block device open so I've gone with ocfs2. Thanks James

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Re: [luv-main] Bought a laptop with optimus, doesn't work (nice false advertising nvidia). Now wanting to murder nvidia via Open Letter.
by Toby Corkindale 14 Sep '11

14 Sep '11

On 12/09/11 18:56, Luke Martinez wrote: > Should I look at all release notes for drivers for every bit of > hardware, expecting someone to do that is ridiculous. I did a bit of > research on my card 555GTM + linux, i had linux drivers etc. Any sane > person would expect it to work. Indeed, any sane person would *expect* it to work, but then, sane people probably go out and buy machines with OSX or Windows pre-installed. This is why I don't try and persuade friends, family or even random strangers to use Linux on their desktops any more. There's always something that doesn't quite work. Ubuntu have gone a long way towards trying to integrate the work of third-party binary drivers into a system which normal users can cope with, but stuff is still miles away from being reliably usable on 99% of modern systems :(

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[luv-main] what's a good Jabber server?
by Russell Coker 14 Sep '11

14 Sep '11

I've been using ejabberd for a while, but it's painful. It has an extra daemon process used for mysterious Erlang stuff, it binds to more ports than it should, and it doesn't work without a lot of fiddling. I'd like a simple jabber server that uses plain text files to tell it the IP address to bind to and the valid user-names and to have a simple utility for generating passwords like the htpasswd program that comes with Apache. Getting Apache going is MUCH easier than getting ejabberd going, but Apache is a much more complex program. Back in the days of Debian/Lenny I investigated all the options and determined that ejabberd was best. I may have been wrong then, but even if I was right there is scope for other programs to have been improved. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Re: [luv-main] Bought a laptop with optimus, doesn't work (nice false advertising nvidia). Now wanting to murder nvidia via Open Letter.
by Luke Martinez 14 Sep '11

14 Sep '11

I am a Mailing list noob... o.O Well this Dell XPS 15 laptop has everything except for Nvidia working. Suspend, wifi (Linux 3.0+), touchpad (3.1+), bluetooth, Fn+turn off touchpad. Although touchpad + wifi was a problem when i installed Fedora which had an earlier kernel. Regards, Luke On Wed, Sep 14, 2011 at 3:26 PM, Luke Martinez <me(a)luke.asia> wrote: > Well this Dell XPS 15 laptop has everything except for Nvidia working. > Suspend, wifi (Linux 3.0+), touchpad (3.1+), bluetooth, Fn+turn off > touchpad. > > Although touchpad + wifi was a problem when i installed Fedora which had an > earlier kernel. > > Regards, > Luke > > > On Wed, Sep 14, 2011 at 3:19 PM, James Harper < > james.harper(a)bendigoit.com.au> wrote: > >> > On 14/09/11 14:45, Craig Sanders wrote: >> > > support for laptop-specific stuff (graphics switching, etc) on linux >> > > is still problematic. If you choose your laptop carefully, it works >> > > great. But if you just buy one without researching it thoroughly, >> > > you'll probably be disappointed. >> > >> > Most people I know who aren't serious techies just have laptops. I >> have gone >> > through quite a lot of laptops too. >> > NONE of them have managed to work out-of-the-box properly with Linux. >> > Usual suspects are the wifi or suspend not working, but if it's not >> that, it's >> > something else like sound or accelerated video. >> > >> >> The second-hand market is great for Linux use. Unless you want something >> exceptionally fast and shiny and new, a 3 year old laptop will probably >> work just great with some more memory and maybe a new battery. I was >> recently gifted an old HP nx7010 (which is maybe a little older than 3 >> years) and Ubuntu "just worked" with the exception of tv out which >> required a tiny bit of fiddling. Wireless, graphics, touch pad, all >> good. When doing repairs on laptops I often boot off a Linux USB stick >> to test things and haven't had problems except for some very new models, >> although a USB recovery stick hardly equates to production use - I'm >> guessing if I wanted accelerated graphics I might have more trouble with >> the newer stuff. >> >> James >> >> >> >> _______________________________________________ >> luv-main mailing list >> luv-main(a)lists.luv.asn.au >> http://lists.luv.asn.au/listinfo/luv-main >> > >

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Re: [luv-main] backkuppc and ZFS (was Re: Back ups)
by Toby Corkindale 14 Sep '11

14 Sep '11

On 10/09/11 14:57, Daniel Pittman wrote: > On Fri, Sep 9, 2011 at 21:41, Craig Sanders<cas(a)taz.net.au> wrote: >> On Sat, Sep 10, 2011 at 12:30:07PM +1000, Tim Connors wrote: >>>> I woke up yesterday morning to find my system load avg at over 100 - due >>>> [...] >>>> worse, it crashed later even without mlocate running. backuppc scheduled >>> >>> It's true, the linux VMM is a bit shit. A load of 100 is just a slight >>> bit crap. >> >> all waiting for IO. it's hardly linux' fault that some process is going >> apeshit creating a hard-link farm. > > What puzzles me in this discussion is that linking and deleting, in > BackupPC, are a single-threaded operation. One Perl process running, > chewing through one file system operation after another. So, while I > have no doubt it caused this, it feels like there is some underlying > problem lurking in there, waiting for the next time something has a > similar meta-data heavy set of operations happening... For what it's worth, we've seen issues with BackupPC causing excessive laod and nearly killing machines in a manner much like this too. I wasn't investigating that one so can't provide much useful info, other than another data point of "it does happen". Toby

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