On Tue, 2022-12-13 at 22:39 -0600, Robert Nichols wrote: > On 12/13/22 6:10 PM, ToddAndMargo via users wrote: > > On 12/13/22 15:28, Todd Zullinger wrote: > > > Patrick O'Callaghan wrote: > > > > However qcow also allows compression, sparse files, > > > > encryption and copy-on-write snapshots (COW, hence the > > > > name) [...] > > > > > > This is not meant to detract from your well-made point that > > > the qcow2 format provides many benefits over raw filesystem > > > images. :) > > > > > > Tangentially, the qemu-img(1) man page says of the > > > encryption support: > > > > > > The use of encryption in qcow and qcow2 images is > > > considered to be flawed by modern cryptography > > > standards, suffering from a number of design problems: > > > > > > [...] > > > > > > Use of qcow / qcow2 encryption is thus strongly > > > discouraged. Users are recommended to use an alternative > > > encryption technology such as the Linux dm-crypt / LUKS > > > system. > > > > > > And if you can't back it up, it is ... > > I really don't understand what the issue with restoring a qcow2 file > might be. As far as the host is concerned, it's just a file that > contains a binary blob. Dumping and restoring such a file should be > no different from doing the same with any other file containing an > arbitrary arrangement of ONEs and ZEROs. I think there's some lack of clarity in ToddAndMargo's original post. I originally thought it meant that the qcow2 file is just part of some filesystem that is being dumped along with everything else, in which case it's a raw file and should dump and restore without issue. However subsequent comments seems to indicate it's being dumped itself *as a filesystem* (or partition) in which case dump is trying to interpret its contents, and I wouldn't expect that to work, especially after the sparsify process. poc _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
