Using `btrfs subvolume show path` I can get information about what a
subvolume's parent is by uuid.
I'd like to use that information to perform a find-new between the
subvolume and its parent. To do that though I need the path of the
parent and I'm not sure the best way to do find it.
One way would be to grep a `btrfs subvolume list` which is probably
fine but needlessly slow if there's a direct way to convert from uuid
to path.
Also just subscribed to this list, nice to meet all of you I'm jdoliner.
Thanks in advance for the help.
Likely irrelevant but here's system config:
Linux jd.c.celtic-guru-651.internal 3.17.2+ #2 SMP Thu Dec 4 18:08:02
UTC 2014 x86_64 Intel(R) Xeon(R) CPU @ 2.60GHz GenuineIntel GNU/Linux
Btrfs v3.14_pre20140414
Label: 'ROOT' uuid: 4c2a047c-c81f-4838-b281-0e562fe02afe
Total devices 1 FS bytes used 3.43GiB
devid 1 size 6.68GiB used 4.82GiB path /dev/sda9
Label: none uuid: 25db08a6-4771-48b6-bcae-999a65f49bf1
Total devices 1 FS bytes used 24.56GiB
devid 1 size 100.00GiB used 27.04GiB path /dev/sdb
Label: none uuid: dc6cd8a9-ff7e-4577-9098-3909061be47c
Total devices 1 FS bytes used 379.74MiB
devid 1 size 10.00GiB used 3.04GiB path /dev/loop0
Btrfs v3.14_pre20140414
Data, single: total=24.01GiB, used=23.70GiB
System, DUP: total=8.00MiB, used=16.00KiB
System, single: total=4.00MiB, used=0.00
Metadata, DUP: total=1.50GiB, used=880.41MiB
Metadata, single: total=8.00MiB, used=0.00
unknown, single: total=304.00MiB, used=0.00
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