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Text of the page (random words):
frozen industries skip to content frozen industries a project blog posted on july 9 2016 february 5 2024 zfs cheatsheet create a raid 1 style file system across two devices zpool create tank mirror dev sdb dev sdc create a raidz2 file system with all the features zpool create f tank o ashift 12 raidz2 dev sda dev sdb dev sdc dev sdd zfs set compression lz4 tank zfs set xattr sa tank zfs set acltype posixacl tank zpool set autoexpand on tank add another pair of mirrored drives to create an array similar to raid 10 zpool add tank mirror dev sdd dev sde display information about the file system zpool status zpool list zpool list v zfs list zfs list t all zfs get all disable a drive zpool offline tank dev sdj replace an active drive zpool replace f tank dev sds dev sdt scrub an array zpool scrub tank enable autoexpand for a zpool allows growing arrays by replacing drives with larger models zpool set autoexpand on tank enable file system compression zfs set compression lz4 tank create a new file system zfs create tank partition1 remove a drive even if resilvering zpool detach tank sdc clear zfs info from a drive zpool labelclear dev sdt remove a drive from a mirror of sdc sdd then attach a new drive sde zpool detach tank sdc zpool attach f tank sdd sde remove a drive sdx from a raid z2 then attach a new drive sdy zpool offline tank sdx zpool replace tank sdx sdy posted on november 9 2014 april 17 2016 flashing an lsi 9211 8i ir card with it firmware i purchased a brand new sealed lsi 9211 8i card from a vendor on ebay at a much better price than at my normal ie newegg amazon places unfortunately when i went to flash it from ir to it firmware i kept receiving a failed to validate mfg page 2 error lots of googling later i finally found a method that worked to revive the card since my process was slightly different from the dozens of methods i found i m going to add another revision to the internet and for my future reference the card was probably an oem design misleadingly sold as a retail lsi card but i decided to keep it because i was able to get it working reliably here s my firmware update process create a bootable usb flash drive using rufus copy the following items to the bootable flash drive megarec dos utility and dell sbr file from http lime technology com forum index php topic 12767 615 toolset_perch310 to lsimegaraid zip dell 6gbtsas firmware and dos flash utility from https forums servethehome com index php threads fujitsu d2607 sas2008 it mode 2513 firmware package version 07 01 24 00 lsi 9211 8i p7 firmware and dos flash utilty from lsi website navigate to downloads for 9211 8i choose archived lsi 9211 8i p19 firmware and dos flash utility from lsi website navigate to downloads for 9211 8i choose current follow the instructions at https forums servethehome com index php threads fujitsu d2607 sas2008 it mode 2513 with the following changes get the sas address megaoem adpallinfo aall page 20 flash a dell sbr file with megarec megarec writesbr 0 sbrempty bin clear the flash with megarec megerec cleanflash 0 hard reboot flash the dell firmware using the dell utility hard reboot flash using the p7 dos utility and firmware flash using the p19 dos utility firmware and bios hard reboot set the sas address verify with sas2flsh list to perform this process i _had_ to use a dos bootable usb flash drive because of the p7 dos utility it appears that the p7 uefi utility is either missing or never existed on the internet also the dos megarec utility was a requirement the process didn t work without the erase and sbr commands another requirement was a motherboard which was compatible with both the sas2flsh exe dos utility and the 9211 8i card after pal errors on four motherboards 3 intel one amd i found an amd motherboard which worked the asus m2n mx the entire process was time consuming and a frustrating experience here s hoping lsi releases a simple raidless affordable 8 port sata card in the future update 2016 04 17 i successfully flashed a dell h310 using the instructions and files at https techmattr wordpress com 2016 04 11 updated sas hba crossflashing or flashing to it mode dell perc h200 and h310 using a uefi firmware desktop posted on may 3 2014 may 3 2014 change the clock color in xbmc the white font color used by xbmc s confluence theme was causing image retention on my plasma tv even with a 1 minute black screen screensaver to fight this i changed the color to a dark grey i m using openelec adjust the paths as necessary make a copy of the theme so system updates don t clobber the changes cp a usr share xbmc addons skin confluence addons skin confluence gotham edit edit 720p includes xml under include name clock change textcolor from white to grey3 change the skin name from confluence to something else in addon xml posted on april 23 2014 april 23 2014 wipe a hard drive zero a drive with progress change 1t to whatever drive size your zeroing dd if dev zero bs 1m pv s 1t dd bs 1m of dev sde erase the drive then read back the blocks to check for errors badblocks svw t 0x00 dev sde posted on april 20 2014 july 9 2016 btrfs cheatsheet create a raid 1 style file system across two devices mkfs btrfs d raid1 m raid1 dev sdl dev sdn mkfs btrfs d raid1 m raid1 dev sdl dev sdn display information about the filesystem btrfs fi show mnt btrfs btrfs fi df mnt btrfs btrfs fi show mnt btrfs btrfs fi df mnt btrfs check the data while online btrfs scrub start mnt btrfs btrfs scrub status mnt btrfs btrfs scrub start mnt btrfs btrfs scrub status mnt btrfs add a drive btrfs device add dev sda mnt btrfs btrfs balance start d m mnt btrfs btrfs device add dev sda mnt btrfs btrfs balance start d m mnt btrfs remove a drive btrfs device delete dev sdl mnt btrfs btrfs device delete dev sdl mnt btrfs replace a drive btrfs replace start dev sda dev sdl mnt btrfs btrfs replace start dev sda dev sdl mnt btrfs convert to raid 1 both data and metadata btrfs balance start dconvert raid1 mconvert raid1 mnt btrfs btrfs balance status mnt btrfs btrfs balance start dconvert raid1 mconvert raid1 mnt btrfs btrfs balance status mnt btrfs posted on june 22 2013 march 8 2014 raspberry pi as a car airplay receiver this can also be done with an airport express and a dc inverter using a raspberrypi is slightly less expensive and more fun to setup parts list 25 35 raspberrypi model a or b 8 case 9 car usb power adapter 3 usb cable 12 usb wifi adapter 148f 5370 ralink technology corp rt5370 wireless adapter 6 8 gb sd memory card 1 3 5 audio cable total 64 74 depending on rpi model there are a lot of high quality howto guides around the net but i haven t found one that combines all the necessary steps these steps are install raspbian setup shairport setup wi fi in ap mode configure raspbian to boot into read only mode configure iphone ipad 1 install raspbian to the sd card http elinux org rpi_easy_sd_card_setup 2 install shairport and configure audio http snippets khromov se raspberry pi shairport build instructions 3 setup wi fi adapter in ap mode http www rpiblog com 2012 12 turn raspberry pi into wireless access html etc hostapd hostapd conf interface wlan0 driver nl80211 ssid carpi hw_mode g channel 11 macaddr_acl 0 auth_algs 1 ignore_broadcast_ssid 0 wpa 2 wpa_passphrase password wpa_key_mgmt wpa psk wpa_pairwise tkip rsn_pairwise ccmp 4 configure raspbian to boot into read only mode http www raspberrypi org phpbb3 viewtopic php f 29 t 22596 5 connect to the rpi network select the wi fi network on your iphone it ll connect to the network but without dns and gateway settings you ll still be able to use your cellular connection for data so itunes match pandora etc will still work results at this point it works great during home testing i can stream audio from the internet on my phone and have it play on the 3 5mm audio jack on the raspberry pi without stuttering or buffering however car testing has not worked well i get frequent drops which i m attributing to wi fi interference i m thinking a 5ghz wi fi connecting will fix this problem but i ve yet to find a mini adapter that will work posted on november 4 2012 october 5 2014 ubuntu 12 04 lts on an apple mac mini late 2012 i m switching my web hosting to a mac mini running ubuntu linux these are my notes for getting it set up here s the hardware specs apple mac mini 6 2 late 2012 intel core i7 3615qm 2 3 ghz quad core processor 16 gb ddr3 1600 memory 128 gb solid state drive 1 tb 5400 rpm hard drive the mac mini is built to run os x 10 8 but ubuntu 12 04 1 runs nicely with a couple of tweaks installing required the noapic flag f6 when at the boot menu set boot after power failure by running the following and adding it to etc rc local setpci s 0 1f 0 0xa4 b 0 setpci s 0 1f 0 0xa4 b 0 fan control doesn t work without applesmc and macfanctld installed from ubuntu s mactel ppa the network card doesn t work out of the box you need to download compile a new version of the tg3 module from broadcom for networking i didn t want to have to remember to recompile the module after reinstalling each kernel i setup dkms to take care of it automatically download the linux tg3 driver from broadcom version 3 124c 10 18 12 at the time of this writing extract it navigate to server linux driver tg3 3 124c tar gz extract that file to usr src tg3 3 124c src create a file called usr src tg3 3 124c dkms conf with the following contents package_name tg3 package_version 3 124c clean make c src clean make cd src make build_kernel kernelver kver kernelver built_module_name 0 tg3 built_module_location 0 src dest_module_location 0 updates autoinstall yes package_name tg3 package_version 3 124c clean make c src clean make cd src make build_kernel kernelver kver kernelver built_module_name 0 tg3 built_module_location 0 src dest_module_location 0 updates autoinstall yes add the module to dkms so that it s automatically built for new kernels sudo dkms add m tg3 v 3 124c sudo dkms build m tg3 v 3 124c sudo dkms install m tg3 v 3 124c sudo dkms add m tg3 v 3 124c sudo dkms build m tg3 v 3 124c sudo dkms install m tg3 v 3 124c the module is now ready either load it with modprobe tg3 or reboot if you need to remove it at a later time do sudo dkms remove m tg3 v 3 124c all sudo dkms remove m tg3 v 3 124c all after these changes the mac mini is working great i didn t test wi fi thunderbolt or sound since i won t be using them usb works as far as being able to connect a keyboard and mouse and ubuntu s 12 04 1 livecd boots into the full desktop update ubuntu has released 12 04 2 install live cds based on kernel version 3 5 i have not tested the above instructions with kernel 3 5 so if you re following them you probably want to stick with the 12 04 1 install isos with kernel 3 2 if you install from 12 04 1 you will automatically stay on 3 2 even when updating to 12 04 2 update 2 2014 10 05 ubuntu 14 04 and 12 04 with the trusty hardware enablement stack installed by default from the 12 04 5 iso have the required tg3 driver and do not need the custom dkms config above posted on november 4 2012 february 10 2013 web hosting on a mac mini the new mac mini is out late 2012 model and i m going to give macminicolo a try i m moving from the dedicated server i ve been on for the last two years quad core 2 83 ghz intel q9550 8 gb ddr2 800 dual 500 gb 7200rpm sata drives with a hardware mirror raid 1 ubuntu 10 04 lts to the faster mac mini quad core 2 3 ghz intel core i7 3615qm 16 gb ddr3 1600 128 gb ssd 1 tb sata ubuntu 12 04 lts i m moving because it s less expensive and faster due to having to buy the mini my break even point is in 12 months but after that i m saving money compared to amazon ec2 after two years i will have paid roughly the same as a medium instance 2 cpu 4gb ram with the 1 year reservation discount the mac mini is much faster but then amazon offers a lot more paid services and options the downside is that there s no redundancy built into the mac mini and i become responsible for hardware failures there s a year of warranty built into the mini but after that there s a chance i ll be buying a new one and my predicted savings will be pushed back a year in case of a hardware failure i ll temporarily move to amazon ec2 being instantly available is worth the extra cost in that case posted on july 15 2012 too many computers i ve recently been able to retire three general computers my netbook htpc and work desktop i m now down to 4 general use computers here they are in order of usage macbook pro 15 late 2008 work supplied iphone 4 ipad third gen desktop icebox on the weekend the order changes to ipad third gen iphone 4 macbook pro 15 late 2008 work supplied desktop icebox posted on april 26 2011 august 23 2021 failed hard drives keeping track of my drive failures since april 2011 age months purchased failed model 141 2009 11 2021 08 1 tb hitachi deskstar 7k1000 b hdd 47 2016 07 2020 06 4 tb seagate 2 5 laptop hdd 37 2016 11 2020 01 4 tb seagate desktop hdd 15 119 2010 01 2019 12 2 tb hitachi deskstar 7k2000 7200rpm 60 52818 poh unknown 2018 07 1 5 tb seagate barracuda 7200 11 7200rpm 47 2012 11 2016 10 3 tb seagate barracuda 7200 14 7200rpm 18 2014 12 2016 06 4 tb hgst deskstar nas 0s03664 7200rpm 68 2010 06 2016 02 2 tb western digital caviar green wd20ears 5400rpm 66 2010 08 2016 02 2 tb western digital caviar green wd20ears 5400rpm 66 2010 05 2015 11 2 tb samsung spinpoint f3eg hd203wi 5400rpm 56 2010 11 2015 07 2 tb samsung spinpoint f4 hd204ui 5400rpm 41 2010 06 2013 11 2 tb western digital caviar green wd20ears 5400rpm 42 2008 11 2012 05 1 5 tb seagate barracuda 7200 11 7200rpm 66 2006 08 2012 02 400 gb western digital caviar se16 7200rpm 18 2010 04 2011 10 1 5 tb western digital green 64mb cache 5400rpm 15 2010 04 2011 07 1 5 tb western digital green 64mb cache 5400rpm 26 2009 02 2011 04 1 tb hitachi deskstar 7k1000 b 16mb cache 7200rpm posts pagination page 1 page 2 page 9 next page pages about computers backup desktop file server htpc mac mini router other devices networking spare hardware categories cheatsheet desktop devices file systems hardware howto htpc links lvm rails ramblings server shell software system guides web design websites zfs favorite sites ars technica the tech report anandtech slashdot links blank media deals do it yourself nas frozen server frozen technology frozentech livecd books livecd forums livecd list livecd news livecd wiki proudly powered by wordpress