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As part of the blueprint root-device-hints Ironic will pass some to the deploy ramdisk some hints about which disk device it should pick to be root device (the one where the image will be deployed on). Before the deploy ramdisk would pick the first device it finds, but as the machine could have more than one SATA, SCSI or IDE disk controllers the order in which their corresponding device nodes are added is arbitrary causing devices like /dev/sda and /dev/sdb switching around on each boot time. Plus, as people are adding support to build RAID arrays in Ironic we need a way to tell it to use the just created device to be the root device. The list of hints that could be passed to the deploy ramdisk so it finds the right disk is: * wwn (STRING): unique storage identifier * serial (STRING): disk serial number * model (STRING): device identifier * vendor (STRING): device vendor * size (INT): The size of the disk in GB If not hints are passed, the deploy ramdisk will continue to do what it did before to find the disk. Change-Id: I8425f593e1a610af5a3697988702603ff218f2de |
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| .. | ||
| binary-deps.d | ||
| init.d | ||
| element-deps | ||
| element-provides | ||
| package-installs.yaml | ||
| README.rst | ||
============= deploy-ironic ============= A ramdisk that will expose the machine primary disk over iSCSI and reboot once Ironic signals it is finished.