Hello, I don't know much about the internals of filesystems or devicemapper but I know that the kernel supports ATA-TRIM and that ext4 supports or will soon support it. My question is: What happens, if a dm-crypt-layer is between the filesystem and the real block-device? Will the trim be passed through, or will it be discarded? Optimally, i think, both should be possible. Passing through the information will improve performance and lifetime of a SSD and discarding it would give less information to an attacker since the SSD will return zeroes on LBAs that are not mapped. Regards, Christian _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
