Hi Coly,
jumping in here, because I was looking for a way to revert from bcache
to plain device:
Zitat von Coly Li <colyli@xxxxxxx>:
The super block location of the backing disk is occupied by bcache. You
cannot mount the file system directly from the backing disk which is
formated as bcache backing device [...] (bcache offset all I/Os on
bcache device 4KB behind the requesting
LBA on backing disk).
Assuming that no caching device is associated with a backing device
(so the backing device is "clean" as in "containing all data blocks
with the current content"), could one convert the content of a backing
device to a "non-bcached device" by removing the first 4096 octets of
the backing device content?
Something like "dd if=backingdev of=newdev skip_bytes=4096 ..."?
Regards,
J
