runtime: add initial support for volume override #186
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* Emit cmdline for each mount:
* storage: vol-{k}={path}[,errors={errors}]:{device id}
* ram: vol-{k}={path},size={size}
* Minimal implementation of qcow2 to create files for storage.
* Emit nvidia=true cmdline to signify that the last vdX is the nvidia
drive.
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* Assign serial numbers of the form vol-{k} to identify external
storage.
* Emit command line parameters vol-{k}-path=.. and vol-{k}-errors for
each of the external drives.
* Split tmpfs specification into vol-{k}-path=.. and vol-{k}-size.
* Assign serial `vol-nvidia` to the nvidia files drive.
* Don't emit command line nvidia=true
* self-test didn't remove its artifacts from /tmp, which wasn't harmful when those were only directories but with the introduction of qcow2 storage, the storage leak became considerable. Now each invocation of the self-test creates it's dedicated subdirectory within /tmp which is deleted after the test concludes. * lower storage sizes for self-test.
* Temporarily disable nvidia storage support
Extra: * hide mkfs.ext2 output * validate that the failure to open /sys/class/block/vdX/serial is reported as the absence of the file only when errno is ENOENT. Fail otherwise.
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Superseded by #187 |
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