[frameworks-solid] [Bug 427092] btrfs multiple device handling

[Chris Murphy]

https://bugs.kde.org/show_bug.cgi?id=427092

--- Comment #13 from Chris Murphy <bugzilla at colorremedies.com> ---
Unfortunately I forgot to label this 2-drive Btrfs file system, so it has no
label in the "2" version of attached udisksctl dump and sh5 details.

It appears as two "Linux filesystem" icons with a small orange/red symbol on
the lower left corner, in Dolphin. And it doesn't automount, but if I click on
either one, it mounts the btrfs file system correctly, it just looks odd to see
two icons for the same file system, i.e. somehow dedup for the same file system
UUID? e.g. in this case from blkid:

/dev/vdb1: UUID="b5c151d7-46e9-413b-8061-54d52f655b67"
UUID_SUB="22d9fd70-0b6b-4720-879c-7186d5c47abf" BLOCK_SIZE="4096" TYPE="btrfs"
PARTLABEL="Linux filesystem" PARTUUID="ea70e8dc-ac59-44b2-8e98-a77b49505611"
/dev/vdc1: UUID="b5c151d7-46e9-413b-8061-54d52f655b67"
UUID_SUB="0d9e14e0-20fb-4c6c-bf3a-eb17cce88a7f" BLOCK_SIZE="4096" TYPE="btrfs"
PARTLABEL="Linux filesystem" PARTUUID="996e199c-0ed2-4ed5-beda-a64d2823


If I click the first drive icon, its actually the icon below it that appears to
get mounted. The icon I click on still has the "not mounted" symbol. The drive
icon below it no longer has the "not mounted" symbol. Path to the file system
mount is:

/run/media/chris/b5c151d7-46e9-413b-8061-54d52f655b67

I'm not at all certain about the proper way to handle it but maybe dedup by
UUID? Btrfs doesn't care which /dev/ node is used for mounting. And also the
mount command can accept a UUID directly as well as by /dev/disk/by-uuid/...

Possibly such functionality belongs in udisksd, if it's the service being
requested to do the mount.

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