-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Rusty Bird: > Stickstoff: > > there is documentation about 'root-cow.img' online [1], but nothing > > about 'private-cow.img'. > > Am I right to assume that the 'private.img' is the writable part the VM > > sees, with the changes the VM wrote saved on 'private-cow.img' [...] > > It's kind of the other way around - foo.img stores the most current > live data for volume foo, and foo-cow.img stores differing old data > blocks that allow the corresponding device-mapper snapshot* device to > present a virtual view of the contents of volume foo from the time it > was snapshotted, i.e. before the live data started to diverge. > > > If [..] I backup only 'private.img' of a running VM > > This would result in inconsistent/damaged data.
To be clear - what I meant by inconsistent is that that when the VM is running, some data blocks in private.img will change while your manual backup operation is copying that file. Rusty > * https://www.kernel.org/doc/Documentation/device-mapper/snapshot.txt -----BEGIN PGP SIGNATURE----- iQJ8BAEBCgBmBQJbZGVjXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ4NEI1OUJDRkM2MkIxMjlGRTFCMDZEMDQ0 NjlENzhGNDdBQUYyQURGAAoJEEadePR6ryrfBzcP/jt0GN2azqrNqaP0jNoMmAJh gvZVI53QSxwyK93gGVi1MxECG3B5EA9yl6wEpqe7IJbNKPja6QdPVcJPyruyE+0i w+5aWuR81n8oAI2E1K2b/tJZ1Zha035d/6joRraQ6lkjIH+S2QdYAP5oUUx40ZWf xYAwR+FJZJVsf0dMLnzPgTpLyd7rV2sF3YK5l6InypgmaNB0OmYx/jU7HpSuN7zz w4jYEnfhXthwQS3uaEsuNXVTXln9bEgraR4n9G8emn6z2Xr1/HY6tvWQ2rZzkfRx ++kNrg9O2JrLuPx5mZlQPuZ3iki0wcqBbGNyFNNZ/2yYA5bmRTOYyof3Ux2zdZ9C fa43idV5slEVmprwOH6/iiS0ZLzaoRuQVIvNFVIW5gqteUMiHemqWjyzQm09gY6p QYCCimw48uYsgFyNxjJLp/F5ezdAl2qlbOyzZCK8gWY0zOpCoh1eywgM/04ZJVw9 M9rbHZZBBx4KxVGOkAKzW5LLXVgvpLtYPbdzkrkYqg3hP+Z06oXUqpJv6+TnbCnf JgemF543aSXVcNmwTiZncu+gYwBin8AwWthHhmBaOxDBGnFUOFFjlQcXchbT5hrd NOC0sm845KVgFYyOT+zWvkXJEg1PKTt2m/vQOwicaGF2/uY0Z5nBXBUHEzGkK+y0 rNBlQucepQa/7vJnLcZA =EMYK -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/20180803142331.GA1192%40mutt. For more options, visit https://groups.google.com/d/optout.
