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by aa-jv
454 days ago
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At that scale, wouldn't it make sense to just have raw block i/o copies being done to a disk image, and then mount the image onboard to do the actual data transfers? Seems to me a majority of the overhead with 1000 SD cards is in the filesystem translation layer, multiplied by the USB contention dealing with so many devices. So if it were me, I'd have a big fat, fast mounted filesystem whose purpose is only to serve as a dd destination, get the dd done as quickly as possible with system bus buffer sizes, and then do the data transfer 'offline' once the SD has been mirrored... |
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