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In SLES guests in particular, btrfs snapshots seem to be used to allow rollback of changes made to the filesystem. Dozens of snapshots may be present. Technically therefore these are multi-boot guests. The libguestfs concept of "root" of an operating system does not map well to this, causing problems in virt-inspector and virt-v2v. In this commit we ignore these duplicates. The test is quite narrow to avoid false positives: We only remove a duplicate if it is a member of a parent device, both are btrfs, both the snapshot and parent have a root role, and the roles are otherwise very similar. There may be a case for reporting this information separately in future, although it's also easy to find this out now. For example, when you see a btrfs root device returned by inspect_os, you could call btrfs_subvolume_list on the root device to list the snapshots. Fixes: https://issues.redhat.com/browse/RHEL-93109
Libguestfs is tools and a library for accessing and modifying guest disk images. For more information see the home page: http://libguestfs.org/ For discussion, development, patches, etc. please use the mailing list: https://lists.libguestfs.org To find out how to build libguestfs from source, read: docs/guestfs-building.pod http://libguestfs.org/guestfs-building.1.html man docs/guestfs-building.1 Copyright (C) 2009-2025 Red Hat Inc. The library is distributed under the LGPLv2+. The programs are distributed under the GPLv2+. Please see the files COPYING and COPYING.LIB for full license information. The examples are under a very liberal license.