[systemd-bugs] [Bug 66702] g_udev_client_query_by_device_number fails on disks with subvolumes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66702

Kay Sievers <kay at vrfy.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTABUG

--- Comment #1 from Kay Sievers <kay at vrfy.org> ---
Btrfs volumes are like NFS or tmpfs, a superblock without any associated
device. The behavior is expected and intentional.

Btrfs volumes might be constructed of many volumes, there cannot be the
concept of *that* device, like the "dumb" filesystems use.

There is no way for the udev API to find out which device is behind
a btrfs volume. Btrfs specific command need to be used to determine that,
no generic interface exists for that task.

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