Tag: Linux
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My Pogoplug Thinks its in China?
I think I have to set a regulatory domain for my usb ath9k module because it appears to think it is in CN, which I’m assuming is China. [ 43.313192] usb 1-1: ath9k_htc: Firmware htc_9271.fw requested [ 43.331335] usbcore: registered new interface driver ath9k_htc [ 43.588793] cfg80211: World regulatory domain updated: [ 43.593951] cfg80211: DFS…
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IntelliJ configuration notes on using HugePages
Java has supported Linux Hugepages for a while, but it is not on by default. I like to squeeze the most performance out of my IDE so I turned it on. And here are the settings I used for Intellij now: > cat idea64.vmoptions -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -Xms256m -Xmx768m -server -XX:+UseG1GC -XX:MaxGCPauseMillis=15 -ea -Dsun.io.useCanonCaches=false -Djava.net.preferIPv4Stack=true -Djsse.enableSNIExtension=false…
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Pogoplug now running hostapd
I was not anticipating it not being able to reach channel 11, so I set it to channel 1. Also, it cannot do 802.11n, so I set it to 802.11g. My cell phone seems to be able to use it. Also, for some reason, my pogoplug syncs up to the same switch better than my…
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Converting Virtualbox disk to ZFS volumes
I am trying to create zvol backed virtualbox guests using ZFS on Linux. Hopefully this is not too ambitious. Find size of original .VDI disk image: vboxmanage showhdinfo Fedora19.vdi Pass that file size into zfs create: zfs create -V40960M tank/VMs/Fedora19 Convert .vdi file to raw, best if you can do this from one hd to…
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Replacing a Four Drives at Once
I would not have considered this tactic possible, but then I’ve often come from small raid setups or hardware raid setups that are unlikely to want to replace multiple disks at a time. Replacing four at a time!
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Two drives fail at once? Oh yeah…
Just as I thot I was all cool for having a sixteen drive NAS, today’s opening of it and trying a new network card (did not fit) left me with bad news on the next powerup. > dmesg | grep ata | grep error: [ 23.223221] ata13.00: error: { ABRT } [ 23.234448] ata13.00: error:…
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MACVLAN Note
Do not let me forget this: ip link add link br1 name ‘br1#0’ address “02:00:00:00:00:af” type macvlanip a add 172.10.10.26/24 dev ‘br1#0’ And if you really want me to explain, just ask. Or read this essay on Linux MACVLANs.
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create virtual ethernet devices in linux? – Stack Overflow
This is a great pile of advice on creating virtual network interfaces. networking – How do I create virtual ethernet devices in linux? – Stack Overflow.
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Atom 8 Core — your next server?
I did not realize there were 8-core Atom server chips were a THING yet. They..are. Example: http://www.supermicro.com/products/system/1U/5018/SYS-5018A-MHN4.cfm and check this short-case 1U out: http://www.supermicro.com/products/system/1U/5018/SYS-5018A-FTN4.cfm It has QUAD Gig-E ports. Enough for you? 20W processor? That’s better than you can find with an AMD A-series.
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Hang this Poster in your Office
flyer_xp-to-xubuntu_USletter.png PNG Image, 765 × 990 pixels – Scaled 79%.
Bitratchet 