Xen and serial ports access from domU

PDF versionSend to friendPrinter-friendly version

Howto use the serial ports (/dev/ttySX) from a xen domU

I've recently migrated a zabbix server from a standalone machine to a xen vm.
Attached to serial port of the old server there was a GSM modem used by smstools to send via SMS some of zabbix alarms.
So I wanted to use the same modem with the new domU zabbix server: this is my little howto to get a xen domU access serial ports.

  1. First of all we have to avoid the dom0 to access the serial ports of the machine:
    with debian create a new file (eg.serial-blacklist) in /etc/modprobe.d/ specifying the blacklisting for 3 kernel modules related to serial ports
    blacklist 8250
    blacklist 8250_pnp
    blacklist serial_core
    
  2. Configure the vm: in the configuration file for the domU specify the following lines:
    irq = [4]
    ioports = ['3f8-3ff']
    
  3. On the domU filesystem verify the availability of the kernel modules in /lib/modules/`uname -r`/kernel/drivers/serial:
    8250.ko  8250_pci.ko  8250_pnp.ko  jsm  serial_core.ko  serial_cs.ko
    
  4. In order to have the correct devices in /dev directory install udev:
    apt-get install udev
    

7jji020f

wh0cd204542 celexa

free slot games online gqldd

house of fun free slots slots of vegas casino free slot games online free online slots games | https://freeonlineslots.icu/ - vegas world free games online slots https://freeonlineslots.icu/ - vegas slots online free

hollywood slots xwibb

best online slots igt free slots play slots online turning stone online slots | https://onlineslotgames.tools/ - online slot games https://onlineslotgames.tools/ - pop slots casino

hsomvbur

direct auto insurance quotes quotes auto insurance cheap auto insurance quotes online cheap auto insurance quotes online

free games online slots wjhus

free slots hollywood free vegas slots online free slot machine games monopoly slots | https://casinoslots.tools/ - cleopatra slots https://casinoslots.tools/ - las vegas free slots

hot shot casino slots eydbb

play free slots for fun play slots online hollywood casino online slots free free video slots | https://myslotsbuddy.com/ - cashman casino slots free https://myslotsbuddy.com/ - free slots vegas

parx casino online dosjg

mgm online casino three rivers casino lady luck online casino treasure island casino minnesota | https://online-casino.fun/ - casino online https://online-casino.fun/ - cafe casino online

vegas casino slots hjmwf

jackpot magic slots free slots casino games free slot games slot machine games free | https://freeonlineslots.icu/ - vegas slots online free https://freeonlineslots.icu/ - free slots hollywood

liberty slots casino omyju

slot games slots games slot machine games free play slots | https://slotsgames.icu/ - myvegas slots https://slotsgames.icu/ - caesars free slots

doubleu casino loarb

snoqualmie casino mohegan sun online casino cafe casino online penny slots | https://onlinecasinogamesy.us.org/ - hampton beach casino ballroom https://onlinecasinogamesy.us.org/ - hallmark casino online

paydayloansdirectlender.us.co

free vegas slots online casino zttly

hampton beach casino ballroom winstar casino penny slots zone online casino | https://online-casino-games.fun/ - royal river casino https://online-casino-games.fun/ - online casino

pop slots casino pibju

mohegan sun free online slots heart of vegas slots free games for casino slots hollywood online slot games | https://vegascasino.tools/ - slot games https://vegascasino.tools/ - buffalo slots

penny slots free online gpbfr

hollywood casino free slot play free casino slot games free slot games online free online slots no download | https://slotsonline.fun/ - free slots vegas world https://slotsonline.fun/ - slot games

goldfish slots loild

caesars free slots slots free vegas casino slots free video slots | https://playslotscasino.fun/ - online slots real money https://playslotscasino.fun/ - gamepoint slots

wizard of oz slots gmngn

penny slots online slots jackpot party casino slots vegas world slots | https://playcasinoslots.fun/ - da vinci diamonds free online slots https://playcasinoslots.fun/ - free games online slots

casino slots free games axxlr

free slots no download slot machines mirrorball slots turning stone online slots | https://casinoslot.icu/ - hollywood casino online slots free https://casinoslot.icu/ - quick hits free slots

free slot games with no download ylogx

buffalo gold slots free slots online no download free slots online no download turning stone online slots | http://freeslots.icu/ - online slot games http://freeslots.icu/ - hot shot casino slots

uncoorp

cialis mail order definition
cialis online
cheap cialis australia
generic cialis

wheel of fortune slots vplag

free slots hollywood free slots hollywood free slots no download charlestown races and slots | https://onlineslotgames.tools/ - caesars free slots online https://onlineslotgames.tools/ - free slots hollywood

rock n cash casino slots ltnym

betfair casino online nj casino real money big fish casino high 5 casino | http://online-casino.icu/ - online casino http://online-casino.icu/ - belterra casino

online casino slots irmkt

bovada casino high 5 casino sugarhouse casino online caesars online casino | https://onlinecasinoasti.com/ - pala casino https://onlinecasinoasti.com/ - virgin online casino

rtsft16k

wh0cd204542 amoxicillin tablets

slotomania slot machines flnsg

ilani casino slots casino games viejas casino four winds casino | https://onlinecasinoplayslots.us.org/ - four winds casino https://onlinecasinoplayslots.us.org/ - parx online casino

onlinedatingwebsites.us.com

online casino slots no download cnbji

cashman casino slots free simslots free slots konami free slots free vegas slots online casino | https://slotsgamesgiant.com/ - pch slots tournament https://slotsgamesgiant.com/ - my vegas slots

myvegas slots mrwdd

free slots vegas world slots free turning stone online slots vegas world slots | https://slotsonline.tools/ - free penny slots https://slotsonline.tools/ - jackpot magic slots

casinos near me perqf

pala casino cafe casino online online casino bonus maryland live casino online | https://onlinecasinoplayslots.us.org/ - harrah cherokee casino https://onlinecasinoplayslots.us.org/ - choctaw casino durant oklahoma

wheel of fortune slots drttx

free slots casino games hollywood casino free slot play free video slots liberty slots casino | https://online-slots.fun/ - cleopatra slots https://online-slots.fun/ - hollywood casino online slots free

tmnliaot

wh0cd592332 abilify 2mg

virgin casino online nj cembd

golden nugget online casino zone online casino games twin river casino casinos in iowa | https://usaonlinecasinogames.us.org/ - real casino slots https://usaonlinecasinogames.us.org/ - gambling sites

morongo casino kdwkm

online casino gambling borgata hotel casino online casino games free gsn casino games | https://onlinecasinogames.fun/ - slot machines https://onlinecasinogames.fun/ - gsn casino slots

casino slots dekng

free slots games online free slot machine games free games online slots casino slots free | https://slotsgameshub.com/ - jackpot magic slots https://slotsgameshub.com/ - free online slots no download no registration