July 2016 - luv-main

Internode + Nodephone + Asterisk (+FreePBX?)
by Michael Schams 18 Oct '16

18 Oct '16

Hi there, We are planning to switch from a standard phone line to Nodephone VoIP from Internode. I am very keen to test if Asterisk (maybe in combination with FreePBX) is an option for a small team (one trunk, 6 to 8 endpoints, all with various SIP clients). I successfully set up Asterisk 13 and pjsip and FreePBX 13 on a pretty standard Debian 8 box. I suspect the challenges start when it comes to the VoIP SIP details for the trunk. I came across a few forum posts and discussions about the Internode settings, but I wonder if anyone from the LUV community runs such a setup or has some experience with Asterisk and Internode (especially their Nodephone product)? As I pointed out above, we don't have the line yet, so it's more curiosity than a specific problem I want to solve (yet) :-) Any feedback is welcome. Cheers Michael

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Cheap Home Cloud ~ Raspberry Pi + USB Drives
by Piers Rowan 21 Aug '16

21 Aug '16

Friday random semi-serious question; Like many people I have too much data some work, some create some family, some other...etc. I have some on some backup USB drives that I have never gone back to and also a few unplugged HDD's in the tower (I can't remember even why). I don't really want to go and buy something (or pay for data of cloud storage) but I thought I might do something with the stuff I have lying around. Does anyone know if this is possible: - Set up a Raspberry Pi server which exposes a single file system - Link it to the USB HDD's of different sizes that I have lying around - I save my data to it for backups - The data is placed redundantly over the drives so it can recover from one [or more] dying Bonus point: - I can remove one of the drives and access the data on it directly (so it is FAT32 not Linux RAID) Any ideas? GFS? Cheers P

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Gmane web interface down
by Chris Samuel 30 Jul '16

30 Jul '16

Hi folks, In case you're not aware the Gmane admin Lars has shut down the web interface for Gmane as he's too overloaded to keep it going: https://lwn.net/Articles/695695/ Originally it was going to be the NNTP side as well, but he's now said he's going to keep that up for now. Lars original blog on this is here: https://lars.ingebrigtsen.no/2016/07/28/the-end-of-gmane/ but the LWN article has constructive comments and an update on the change of heart that means the NNTP interface will keep going for now at least. All the best, Chris -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC

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pppd discarding proto 0x8021 in phase 5
by James Harper 26 Jul '16

26 Jul '16

Recently I have been seeing a problem on multiple devices where pppd never completes. It looks like the ISP thinks that pppd is ready for IPCP, but pppd isn't and so discards the IPCP packet (discarding proto 0x8021 in phase 5) and things just go around in a loop like this forever until the connection is interrupted and it starts again. On starting again, it will either connect normally, or will get itself into the same loop and never progress. Has anyone seen that before? It seems to be a recent thing - I've only seen it in the last few months. James

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M.2
by Russell Coker 25 Jul '16

25 Jul '16

https://en.wikipedia.org/wiki/M.2 The latest standard for connecting SSDs is M.2. It's small and doesn't need much power which among other things makes it good for systems with plenty of spare PCIe slots but no spare SATA connectors or SATA power connectors. http://www.intel.com/content/www/us/en/solid-state-drives/ssd-540s-series-m… spec.html The Intel 540 series of SSDs comes in a M.2 variant that has B and M notches. Does anyone know where I can get a PCIe card that takes at least 1 (and preferrably 2) B+M M.2 cards and works with Linux? I want to install 2 of the Intel 540 M.2 SSDs in one system. I can use 2*PCIe slots if necessary but would prefer to use only 1. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Linux power meter
by Brian May 21 Jul '16

21 Jul '16

Hello, Just wondering if there was such a thing as a 240V power meter, e.g. something that looks like: http://www.jaycar.com.au/mains-power-meter/p/MS6115 ...but can feed the usage figures into a Linux system (e.g. Raspberry pi) or something (would be happy with Arduino) for recording or graphing or something. Or am I dreaming? Ok, to answer my own question, google has the following results: * https://openenergymonitor.org/emon/buildingblocks/how-to-build-an-arduino-e… * http://www.instructables.com/id/ARDUINO-ENERGY-METER/ * http://www.instructables.com/id/Arduino-home-energy-monitor-shield/ Still researching the above. However... something already prebuilt, calibrated, and maybe even approved by local authorities would be better... Ideally I would like to be able to monitor the power consumption - individually - of the major power users in my house (e.g. fridge, dishwasher, maybe stove if possible, computer servers, etc) in an automatic manner (so writing down the figures on a daily basis doesn't count). Which would mean having a number of monitoring points, ideally as cheap as possible. Also, ideally I am interested in something that is available today, not something that may or not be provided by my power distributor at some random point in time in the next 10 years. So far I have seen stuff like this: https://www.element14.com/community/community/raspberry-pi/blog/2013/04/05/… ... but need something that works in Australia. Regards -- Brian May <brian(a)linuxpenguins.xyz> https://linuxpenguins.xyz/brian/

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USB storage performing unusually slowly
by Toby Corkindale 18 Jul '16

18 Jul '16

Hi, I've hit a strange issue with a new USB storage device. (Corsair Slider X2 64GB) On a Windows 10 laptop, it'll happily get ~75mbyte/sec writes.[1] Reads are even faster. However on my Linux workstation the best I can get is 27 mbyte/sec, and the usual speed more like 9-10 mbyte/sec. ie. Awful. Reads aren't much better, at 37mbyte/sec. The same workstation can happily read and write very fast to other USB 3 storage devices, so I know the USB 3 ports are active. I've tested with vfat, ext4, btrfs and ntfs filesystems, plus just plain using "dd" to write to the raw device. In all cases, performance is terrible. I've played with mount options (sync, async, direct io, journal modes, etc) and it doesn't make a huge difference. I don't suppose anyone else has hit this, and might have a fix? (I'll test on an alternative Linux system tonight, with a slightly different Linux kernel and motherboard.) -Toby 1: Actual writes, not cached -- which I think is Windows default for removable storage. But tested by writing far more data than the laptop has RAM, followed by quickly selecting "Safely eject the device".

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Micro server
by stripes.theotoky＠googlemail.com 17 Jul '16

17 Jul '16

I am interested in your micro server if it hasn't gone already. Will be near Nottingham from next week. I want to experiment with a NAS box and this should be good for that. Regards Stripes Sent from my BlackBerry® wireless device

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free HP micro server
by Russell Coker 17 Jul '16

17 Jul '16

I have a HP micro server to give away. Not sure of it's condition. It has 4 drive bays and 3 caddies (should get a 4th next meeting) for SATA or SAS disks. I can bring it to a LUV main meeting or beginners' SIG. Contact me off-list if you are interested. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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10GigE
by Russell Coker 07 Jul '16

07 Jul '16

One of my clients is getting a server that is not going to immediately have 10GigE but will probably have it in the not too distant future. Which of the following 10GigE cards from Dell would be most suitable? Note that the 10GigE switch is yet to be purchased. Some of these cards appear to use fiber and some use twisted-pair. Obviously buying a network adapter now is going to constrain the choice of switches in the future. Any suggestions? Emulex OneConnect OCe14102-N1-D 2-port PCIe 10GbE NIC [$574.20 or $6/week-1] QLogic 57810 DP 10Gb DA/SFP+ Converged Network Adapter [$478.50 or $5/week-1] QLogic 57810 Dual Port 10Gb Base-T Network Adapter [$784.30 or $8/week-1] Mellanox ConnectX-3 Pro Dual Port 10 GbE SFP+ PCIE Adapter Full Height, V2 [$762.30 or $8/week-1] Intel Ethernet X540 DP 10GBASE-T Server Adapter [$922.90 or $9/week-1] Intel X520 DP 10Gb DA/SFP+ Server Adapter [$705.10 or $7/week-1] Intel X550 Dual Port 10G Base-T Adapter, Full Height [$860.20 or $9/week-1] Intel X710 Dual Port 10Gb Direct Aattach, SFP+, Converged Network Adapter [$705.10 or $7/week-1] Intel X710 Quad Port 10Gb Direct Aattach, SFP+, Converged Network Adapter [$1,144.00 or $12/week-1] -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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