Hi,
an earlier, similar question went by unanswered, so let me give it
another try:
I have set up a bcache device on top of DMRAID devices for cache and
backing device.
While I can dynamically resize both RAIDs, the bcache device will not
catch up with the changes "live". This conforms to what Kent wrote in
2012 (http://comments.gmane.org/gmane.linux.kernel.bcache.devel/249):
--- cut here ---
For the backing device, I think things will just work - you'll just
have to close and reopen the backing device in order for bcache to
notice the new size. Bcache's superblock doesn't remember the size, it
just goes off of what the size of the backing device is when it's
registered.
There's currently no way to make bcache notice the backing device has
grown to do it at runtime, though that ought to be fairly simple too.
--- cut here ---
If this currently is still not implemented, has anyone started to work
on some "resizebcache" tool, if only handling the backing device?
Regards,
Jens
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