build: Identify target disk by wwn#1343
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: cgwalters The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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Regression from: coreos#1342 We'd die in pid 1 if the cache disk isn't found, which happens in the privileged case.
This is a followup to: coreos#1342 which is part of: coreos#1289 Our builds right now run qemu in a way that's highly sensitive to changes in device ordering. SCSI hardware supports a [world wide name](https://en.wikipedia.org/wiki/World_Wide_Name); change our qemu invocation to use `42` (in decimal) for that. Unfortunately because we're not using udev in our supermin VM right now we don't get the nice `/dev/disk/by-id` symlink to it. Instead just walk `/sys/block` manually.
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@Prashanth684 mind testing this on !x86_64? |
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yes. will definitely try to get to this today. |
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Thanks! And in addition it'd be good to test the final result in: |
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Splitting this out as a separate PR was good for clarity and to get independent testing, but I think we're good to ship #1289 fully. |
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This is a followup to:
#1342
which is part of:
#1289
Our builds right now run qemu in a way that's highly sensitive
to changes in device ordering.
SCSI hardware supports a world wide name;
change our qemu invocation to use
42(in decimal) for that.Unfortunately because we're not using udev in our supermin
VM right now we don't get the nice
/dev/disk/by-idsymlinkto it. Instead just walk
/sys/blockmanually.