Il 05/07/2014 19:47, Max Reitz ha scritto:
bdrv_make_empty() is currently only called if the current image
represents an external snapshot that has been committed to its base
image; it is therefore unlikely to have internal snapshots. In this
case, bdrv_make_empty() can be greatly sped up by creating an empty L1
table and dropping all data clusters at once by recreating the refcount
structure accordingly instead of normally discarding all clusters.
If there are snapshots, fall back to the simple implementation (discard
all clusters).
How much of this code could be reused by bdrv_create?
Paolo
