On 10/12/2017 08:47 AM, Joseph Dunn wrote:
After seeing how btrfs seeds work I wondered if it was possible to push specific files from the seed to the rw device. I know that removing the seed device will flush all the contents over to the rw device, but what about flushing individual files on demand? I found that opening a file, reading the contents, seeking back to 0, and writing out the contents does what I want, but I was hoping for a bit less of a hack. Is there maybe an ioctl or something else that might trigger a similar action?
You mean to say - seed-device delete to trigger copy of only the specified or the modified files only, instead of whole of seed-device ? What's the use case around this ?
Thanks, Anand
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