Arch Linux

bantling

Member

Registered: 2010-07-15

Posts: 3

ZFS has a number of tiny filesystems

For some reason on both machines I use ZFS on, they have a number of tiny filesystems with a legacy mountpoint.
Here's what my desktop shows for zfs list:

NAME                                                                                  USED  AVAIL     REFER  MOUNTPOINT
zboot                                                                                 281G   168G       24K  /zboot
zboot/root                                                                            264G   168G       24K  none
zboot/root/default                                                                    264G   168G      132G  /mnt
zboot/root/default/11c2e5747faaff2b0829082b42c9323ab04e35ca1fb000cf7a9bcaa42b00d806  30.0M   168G     69.6M  legacy
zboot/root/default/1271f9633082c85e2694ca21a2064d48ac59f82397ab04b0c44cee591604780e    68K   168G     40.5M  legacy
zboot/root/default/1551c6165e7cee82a74d82201b007502ca7443f606dd1b2b0e5dbd2cc6bc5c54    65K   168G     40.5M  legacy
zboot/root/default/21599766c50b36c3e3b209c2db8c61039abdb0f931f9d09d5f2cf678f9853ead  3.68M   168G     3.63M  legacy
zboot/root/default/26da22fb8fdfdccba4c816b66098c8fabf0880fde31354618ae6aacef3cdcb75  2.77M   168G     2.77M  legacy
zboot/root/default/403682ea4e8b929d83593bfc372559c8858c1afbbbc1898d2f0a02855a5282ee  71.5K   168G     69.6M  legacy
zboot/root/default/4a43a9ca6f5ffdef7fbb75ce879c249a826851aa0763d1f827662a38bfca3fea  6.72M   168G     9.87M  legacy
zboot/root/default/4bdb0174945064a89481f11749fc9dfa222705020b78c4000db24eb01d69becf  64.5K   168G     4.94M  legacy
zboot/root/default/66be4949b8e88a01b435b35d1d3e1a68989327b7d77f1fcb76cfc8e96f548c7c   479K   168G     69.6M  legacy
zboot/root/default/751762d83669d3de8ab294abdeaeef56b72a41e37f9b48a9e9b69686c90ab835  2.23M   168G     4.93M  legacy
zboot/root/default/817c1aaf05242002ba697d6e0383aef53a40f4c13338a49933d45bb09f8a3e3b    35K   168G     3.64M  legacy
zboot/root/default/8aa4fa600d02c1236466afe8409bfc34be4ed69756912ab7973700470a9e1cc1  3.17M   168G     3.16M  legacy
zboot/root/default/97d8bbe6f1a30ceea9926b9aa438d5ce078e169dcaa34957fb206b53579594a2    34K   168G     3.63M  legacy
zboot/root/default/Media                                                              132G   168G      132G  /home/user/Media
zboot/root/default/af4452d89f763c91132228cf1a37435f06a9a84b8317712b540b7335bc7f73b2    93K   168G     40.5M  legacy
zboot/root/default/b41168b5ada1db0f728e6764f0a65b80abf96d6d8cdcdf56b463367e753e4e95  37.6M   168G     40.5M  legacy
zboot/root/default/b8a64a48f8b93648dda9d8dd9d06e26e080c15d2b101c36167f7faf4db590e53  77.5K   168G     40.5M  legacy
zboot/root/default/c651d5632665059e758d1f2933d56dda5f0592e0475d79ca6b8b5ddf4f631550    69K   168G     40.5M  legacy
zboot/root/default/dc9c51fcc1228598f5c14ad3b7d9dfff38b65afdeea0b12f63c312622f5a9278  3.69M   168G     3.69M  legacy
zboot/root/default/dcb1652a2e304cf36defcdcad3b324176505e7241ac8c667052c89b9790cbe4d  73.5K   168G     76.3M  legacy
zboot/root/default/e8465a84fe9695ca9c78dc8509baa2b2c71b912da03e126f904398ce1bce1953  68.6M   168G     68.6M  legacy
zboot/root/default/f1602892d0b8cdb3550e130f02f90e17932021bb4f6502b6a908219526a85735  7.83M   168G     76.3M  legacy
zboot/swap                                                                           17.0G   185G       12K  -

Is this just something zfs always does? I googled it, but didn't see any answer. Maybe systemd needs some of these? I know docker uses some zvols (I see messages about docker closing them when I shutdown my server with docker containers still running).

I'm just curious more than anything as to:

1. why they exist
2. how to try and determine how they got created (maybe what process owns them, if that makes sense)

Thanks.