On Wed, Sep 17, 2025 at 2:48 PM home user via users <users@lists.fedoraproject.org> wrote: > Is there a 1-to-1 correspondence between "drive" and "volume". In other > words, each drive corresponds to one and only volume, and each volume > corresponds to one and only one drive?
No, there is not. A "volume" is a logical entity, a "drive" is a more-or-less[1] physical entity. It also depends on context[2]. A drive can be directly formatted with a file system at which time it would be considered a volume. A drive can be partitioned. A partition can be formatted with a file system at which time it would be considered a volume. Sometimes the partition itself is referred to as a volume. One or more drives and/or partitions can be formatted as an LVM Physical Volume (PV). Within LVM you would have Volume Groups (VGs), and within the VGs you would have Logical Volumes (LVs). Each LV would be a volume. Other volume managers such as btrfs and zfs have similar concepts to LVM. A RAID set is a volume typically created from multiple drives, but it could also be constructed from multiple partitions. The RAID volume is presented to the system as a drive. So a drive can have one or more volumes, and a single volume can exist across one or more drives. [1] I say more-or-less because of the RAID case, and also because a "drive" could also be a virtual disk for a VM. [2] RAID provides a good example - from the RAID context multiple drives/partitions are used to create a volume; from the OS context the RAID volume is a drive. -- _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org 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@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
