Skip to main content

Map Raw Disk Devices KVM

 I'm trying to test some KVM guest clustering w/GFS using iSCSI for the Shared Device.

I don't know if any of this plan will work.. but.. I did manage to figure out how to map the device directly to the guest.

    <disk type='block' device='lun' sgio='unfiltered'>
      <driver name='qemu' type='raw' cache='none'/>
      <source dev='/dev/disk/by-path/ip-192.168.0.140:3260-iscsi-iqn.2014-08.private.matrix.rhel6a:target1-lun-1'/>
      <target dev='vdb' bus='scsi'/>
      <address type='drive' controller='4' bus='0' target='0' unit='0'/>
    </disk>

Or.. using Multipath... (this doesn't seem to work, but I think the issue is with my VM, not this solution...)

    <disk type='block' device='lun' sgio='unfiltered'>
      <driver name='qemu' type='raw' cache='none'/>
      <source dev='/dev/mapper/CAPELLA_0029'/>
      <target dev='vdb' bus='scsi'/>
      <address type='drive' controller='4' bus='0' target='0' unit='0'/>
    </disk>


/dev/mapper/CAPELLA_0029
Labels:

Comments

Post a Comment

Popular posts from this blog

PXE boot a LiveCD image

Summary: I have wanted to build a kickstart environment which hosted a "rescue CD" or LiveCD to allow you to boot over the network after you blew your stuff up and needed to repair a few things.  Today I have worked through a method of doing so, with the help of the people who published a succinct script with the Red Hat Enterprise Virtualization Hypervisor.  (the script will be at the bottom of this post - if I have somehow not followed the GPL, please let me know and I will correct whatever is necessary) NOTE/Warning: The boot will fail due the initrd being too large (645mb).  I'm not sure how to proceed.  This procedure worked for RHEVh, because it is quite a bit smaller.  Hopefully I can report back with progress on this? :-$ Procedure: download your LiveCD image to /export/isos/RESCUE/Fedora-16-i686-Live-Desktop.iso # cd /var/tmp # vi livecd-iso-to-pxeboot (populate the file with the script shown below) # chmod 754 ./livecd-iso-to-pxeb...
2 comments
Read more

"Error getting authority: Error initializing authority: Could not connect: No such file or directory (g-io-error-quark, 1)"

"Error getting authority: Error initializing authority: Could not connect: No such file or directory (g-io-error-quark, 1)" One issue that may cause this to arise is if you managed to break your /etc/fstab We had an engineer add a line with the intended options of "nfsvers=3" but instead added "-onfsvers=3" and it broke the system fairly catastrophically.
Post a Comment
Read more

MOTD with colors! (also applies to shell profiles)

I'm not sure why I had never looked into this before, but this evening I became obsessed with discovering how to present different colored text in the /etc/motd. A person had suggested creating a shell script (rather than using special editing modes in vi, or something) and I agree that is the simplest way of getting this accomplished quickly. This most noteworthy portion of this script is the following: RESET="\033[0m" that puts the users shell back to the original color. I typically like a green text on black background. Also - a great reference for the different colors and font-type (underscore, etc...) https://wiki.archlinux.org/index.php/Color_Bash_Prompt I found this example on the web and I wish I could recall where so that I could provide credit to that person. #!/bin/bash #define the filename to use as output motd="/etc/motd" # Collect useful information about your system # $USER is automatically defined HOSTNAME=`uname -n` KERNEL=`un...
1 comment
Read more