bytes = sectors * 512
if bytes < 128 * 1024 * 1024: # less than 128MiB
_ThrowError("Meta device too small (%.2fMib)", (bytes / 1024 / 1024))
- if bytes > (128 + 32) * 1024 * 1024: # account for an extra (big) PE on LVM
+ # the maximum *valid* size of the meta device when living on top
+ # of LVM is hard to compute: it depends on the number of stripes
+ # and the PE size; e.g. a 2-stripe, 64MB PE will result in a 128MB
+ # (normal size), but an eight-stripe 128MB PE will result in a 1GB
+ # size meta device; as such, we restrict it to 1GB (a little bit
+ # too generous, but making assumptions about PE size is hard)
+ if bytes > 1024 * 1024 * 1024:
_ThrowError("Meta device too big (%.2fMiB)", (bytes / 1024 / 1024))
def Rename(self, new_id):