Difference between revisions of "Agile testbed"

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(update diagram)
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This just means qemu could not create the domain!
 
This just means qemu could not create the domain!
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=== Installing Debian on blades with Fiber Channel ===
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Although FC support on Debian works fine, using the multipath-tools-boot package is a bit tricky. It will update the initrd to include the multipath libraries and tools, to make it available at boot time. This happened on blade-13; on reboot it was unable to mount the root partition (The message was 'device or resource busy') because the device mapper had somehow taken hold of the SCSI disk. By changing the root=UUID=xxxx stanza in the GRUB menu to root=/dev/dm-2 (this was guess-work) I managed to boot the system. There were probably several remedies to resolve the issue:
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# rerun update-grub. This should replace the UUID= with a link to /dev/mapper/xxxx-part1
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# blacklist the disk in the device mapper (and running mkinitramfs)
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# remove the multipath-tools-boot package altogether.
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I opted for blacklisting; this is what's in /etc/multipath.conf:
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blacklist {
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  wwid 3600508e000000000d6c6de44c0416105
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}

Revision as of 15:25, 9 January 2015