On 12/08/2010 04:29 AM, Jon Nelson wrote: > Maybe not so fantastic. I kept testing and had no more failures. At > all. After 40+ iterations I gave up. > I went back to trying ext4 on a LUKS volume. The 'hit' ratio went to > something like 1 in 3, or better. Encryption usually propagates bit corruption (not sure if it is in this case). But in principle if there is one bit corrupted, after decryption the whole sector is corrupted. (That's why bit media errors have usually more serious impact with FDE.) Isn't there random noise instead of zeroes when reading sparse files? We should probably write some test focusing on sparse files handling here... Milan -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel