Milan gave quite an extensive answer to your questions. One thing I want to add, the LVM metadata is stored 2k from the start of the device - if you only use 1 metadata-copy that is (which is default). As Milan said, make sure which extents are actually ocupied. As others mentioned: Backup and then dry run with a mapping of enforced reduced size to see if the possible result is useable at all. Regards -Sven On Wed, July 22, 2015 15:46, Karol Babioch wrote: > Hi list, > > I'm not familiar enough with the LUKS internals, but I'm pretty sure > that it is not filesystem aware, so it will only reencrypt the first > 16GB of the device, while LVM and any filesystems may actually put data > anywhere on the device. > > So am I right in assuming that providing a device size smaller than the > actual block device size might lead to data corruption or is it safe to > use it in the way described above? > > Best regards, > Karol Babioch > > _______________________________________________ > dm-crypt mailing list > dm-crypt@xxxxxxxx > http://www.saout.de/mailman/listinfo/dm-crypt > _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
