bcache backing and caching devices not recognized between reboots PPC64EL

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Hello,

On my POWER9 machine running Debian ppc64EL (little endian), my caching and backing devices mostly aren't recognized between reboots.

The caching device is NEVER recognized between reboots.

The backing device will be recognized between reboots and the filesystem will be accessible/mountable provided I have never attached a caching device to it.

It doesn't matter if I detach the caching device before I reboot, the backing device will not be recognized between reboots if it has ever had a caching device attached.

The caching device after a reboot:
bcache-super-show /dev/sdxy
Invalid superblock (bad magic)
-bash: echo: write error: Invalid argument

If the caching device had been attached to the backing device, the result is the same for the backing device.

-Cameron




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