ZFS shows that container has snapshots that are not listed with "lxc info"

wexi79 · October 29, 2018, 10:53pm

Hello,

I have a setup where a script run with crom takes snapshots of all the containers on a host and then another script does cleanup of the snapshots that are older than a specified amount of days. Also I have another host which connects to the first one and takes scheduled offsite copies of the containers. But for some reason the ZFS pool disk usage was getting higher than expected and when investigating further, I found out that one of the containers had snapshots that are not listed when calling “lxc info”.

root@lxd-2-top2:~# lxc info top2db-master
Name: top2db-master
Remote: unix://
Architecture: x86_64
Created: 2017/10/21 16:57 UTC
Status: Running
Type: persistent
Profiles: default
Pid: 22286
Ips:
eth0: inet 10.107.211.20 vethG4157N
eth0: inet6 fe80::216:3eff:fe20:da27 vethG4157N
lo: inet 127.0.0.1
lo: inet6 ::1
Resources:
Processes: 77
Disk usage:
root: 66.77GB
Memory usage:
Memory (current): 935.36MB
Memory (peak): 1.03GB
Network usage:
eth0:
Bytes received: 36.48GB
Bytes sent: 456.65GB
Packets received: 374148287
Packets sent: 304406052
lo:
Bytes received: 8.38GB
Bytes sent: 8.38GB
Packets received: 971994
Packets sent: 971994
Snapshots:
20171021-new-prod (taken at 2017/10/21 18:39 UTC) (stateless)
remove_binlog (taken at 2017/12/17 17:10 UTC) (stateless)
20180921-before-update (taken at 2018/09/20 22:28 UTC) (stateless)
20181021-backup (taken at 2018/10/21 02:00 UTC) (stateless)
20181022-backup (taken at 2018/10/22 02:00 UTC) (stateless)
20181023-backup (taken at 2018/10/23 02:00 UTC) (stateless)
20181023-0400-restorepoint (taken at 2018/10/23 04:00 UTC) (stateless)
20181023-2000-restorepoint (taken at 2018/10/23 20:00 UTC) (stateless)
20181024-backup (taken at 2018/10/24 02:00 UTC) (stateless)
20181024-0400-restorepoint (taken at 2018/10/24 04:00 UTC) (stateless)
20181024-2000-restorepoint (taken at 2018/10/24 20:00 UTC) (stateless)
20181025-backup (taken at 2018/10/25 02:00 UTC) (stateless)
20181025-0400-restorepoint (taken at 2018/10/25 04:00 UTC) (stateless)
20181025-2000-restorepoint (taken at 2018/10/25 20:00 UTC) (stateless)
20181026-backup (taken at 2018/10/26 02:00 UTC) (stateless)
20181026-0400-restorepoint (taken at 2018/10/26 04:00 UTC) (stateless)
20181026-2000-restorepoint (taken at 2018/10/26 20:00 UTC) (stateless)
20181027-backup (taken at 2018/10/27 02:00 UTC) (stateless)
20181027-0400-restorepoint (taken at 2018/10/27 04:00 UTC) (stateless)
20181027-2000-restorepoint (taken at 2018/10/27 20:00 UTC) (stateless)
20181028-backup (taken at 2018/10/28 02:00 UTC) (stateless)
20181028-0400-restorepoint (taken at 2018/10/28 04:00 UTC) (stateless)
20181028-2000-restorepoint (taken at 2018/10/28 20:00 UTC) (stateless)
20181029-backup (taken at 2018/10/29 02:00 UTC) (stateless)
20181029-0400-restorepoint (taken at 2018/10/29 04:00 UTC) (stateless)
20181029-2000-restorepoint (taken at 2018/10/29 20:00 UTC) (stateless)

When listing the snapshots with ZFS I see the unlisted snapshots named “copy-” which obviously are the culprit for the excessive disk usage:

root@lxd-2-top2:~# zfs list -r -t snapshot -o space,creation NAME lxd/containers/top2db-master@snapshot-20171021-new-prod lxd/containers/top2db-master@copy-0a1a537b-1a89-4817-9b32-2c0a57568606 lxd/containers/top2db-master@copy-493d6e4e-0315-473c-98a6-65d02a3058d5 lxd/containers/top2db-master@copy-f4d87fa9-5bf3-4085-8e9b-b4bdc42e3cf8 lxd/containers/top2db-master@copy-b2dd4f9c-81d4-4eaf-b7ec-c3f2ce69f900 lxd/containers/top2db-master@snapshot-remove_binlog lxd/containers/top2db-master@copy-deafa6f5-e474-408e-859a-25279e855742 lxd/containers/top2db-master@copy-b5fff947-337e-4fb8-a332-596e63ba6a0a lxd/containers/top2db-master@copy-14501791-8209-4e0c-bd65-6611c53c4199 lxd/containers/top2db-master@copy-04de4d76-f14c-4152-9931-9dc6f70e50d9 lxd/containers/top2db-master@copy-d8ee0ff3-f1af-405a-87c0-fed3aadbdc06 lxd/containers/top2db-master@copy-0b0035e7-5acd-4ab6-8437-75f9fe724df2 lxd/containers/top2db-master@copy-d2343864-e576-4c1e-b332-cbb4bf3c03b2 lxd/containers/top2db-master@copy-7472222f-97ba-4b4d-bba3-2cc250cb882e lxd/containers/top2db-master@copy-92a74080-b747-4056-b3d3-6dba3264c0a5 lxd/containers/top2db-master@copy-64991c80-0257-45b3-8bcb-e3f5db315110 lxd/containers/top2db-master@copy-9435a1e8-5f43-49d5-a081-de66cc909520 lxd/containers/top2db-master@copy-0091e490-1642-42a2-b80a-d0eef223d899 lxd/containers/top2db-master@copy-fed07265-874e-43eb-9ae1-32a27861d969 lxd/containers/top2db-master@snapshot-20180921-before-update lxd/containers/top2db-master@copy-d6668fd4-36fd-4091-a36d-0806c2243fd4 lxd/containers/top2db-master@copy-c9e5e09e-5473-478c-b199-ed3050c6f2f8 lxd/containers/top2db-master@copy-10e6e0fc-dd23-4257-b0ca-a9bce9db6d1c lxd/containers/top2db-master@copy-1d8c9108-879f-4466-a170-778adbf05bb2 lxd/containers/top2db-master@copy-ce9fe8b3-4b09-4758-8287-c463c54f8d8d lxd/containers/top2db-master@copy-a9f1dc02-389c-4e5a-a8fa-dc946d7bbac3 lxd/containers/top2db-master@copy-0255e2a9-e0f5-43ec-be46-f7f0ed492bfa lxd/containers/top2db-master@copy-d3020861-8d1c-4ae7-80ca-0c79861d80ee lxd/containers/top2db-master@copy-c07c5e07-f797-4842-9ec2-9c6e2990fda9 lxd/containers/top2db-master@copy-062e4ca8-8ece-4a6b-ac14-3db244ff0482 lxd/containers/top2db-master@copy-07e9e5f6-b236-45a4-abdb-d95edfa53ce8 lxd/containers/top2db-master@copy-c4b831db-aa67-4ec9-94e4-73446eb17a28 lxd/containers/top2db-master@copy-5318b9fd-4201-45f5-a739-df939e115ae5 lxd/containers/top2db-master@copy-aca3dcde-58cd-4521-bc1d-c439a2d33971 lxd/containers/top2db-master@copy-8fdc46d8-aaaa-4fb6-9ea9-6b2561c2e83f lxd/containers/top2db-master@copy-87b5f473-2b35-4086-8ef2-dd3ab8c038b8 lxd/containers/top2db-master@copy-aece6d05-a495-4443-9f26-99e309ac5b3a lxd/containers/top2db-master@copy-dcffe52a-2719-442c-af35-a473ab941a40 lxd/containers/top2db-master@copy-539776c5-7b5a-4086-8400-12a272806042 lxd/containers/top2db-master@copy-2718305d-df26-42a2-ab52-d758bbd59603 lxd/containers/top2db-master@copy-59fe49ae-f4ea-4213-b50f-9d6fad9ff055 lxd/containers/top2db-master@copy-b3763152-a5a7-45bd-bc90-90cddfbc5a6f lxd/containers/top2db-master@copy-dbbc0c81-f0b8-438c-8b8c-995d2a3690cc lxd/containers/top2db-master@copy-d2466db2-8bcb-44a0-bfa9-fd2b7d8b2f9a lxd/containers/top2db-master@copy-e0ec7363-fafc-45e1-bb60-bbfa6511d841 lxd/containers/top2db-master@copy-7ba29723-0160-47bc-adfd-213e35e93f01 lxd/containers/top2db-master@copy-7b66e255-08e1-491a-87f1-b716664accca lxd/containers/top2db-master@copy-4dd09422-c2c0-48ed-8dd2-b622fad9d695 lxd/containers/top2db-master@copy-d873f90f-e7f5-4912-893e-9ea630917435 lxd/containers/top2db-master@snapshot-20181021-backup lxd/containers/top2db-master@snapshot-20181022-backup lxd/containers/top2db-master@snapshot-20181023-backup lxd/containers/top2db-master@snapshot-20181023-0400-restorepoint lxd/containers/top2db-master@snapshot-20181023-2000-restorepoint lxd/containers/top2db-master@snapshot-20181024-backup lxd/containers/top2db-master@snapshot-20181024-0400-restorepoint lxd/containers/top2db-master@snapshot-20181024-2000-restorepoint lxd/containers/top2db-master@snapshot-20181025-backup lxd/containers/top2db-master@snapshot-20181025-0400-restorepoint lxd/containers/top2db-master@snapshot-20181025-2000-restorepoint lxd/containers/top2db-master@snapshot-20181026-backup lxd/containers/top2db-master@snapshot-20181026-0400-restorepoint lxd/containers/top2db-master@snapshot-20181026-2000-restorepoint lxd/containers/top2db-master@snapshot-20181027-backup lxd/containers/top2db-master@snapshot-20181027-0400-restorepoint lxd/containers/top2db-master@snapshot-20181027-2000-restorepoint lxd/containers/top2db-master@snapshot-20181028-backup lxd/containers/top2db-master@snapshot-20181028-0400-restorepoint lxd/containers/top2db-master@snapshot-20181028-2000-restorepoint lxd/containers/top2db-master@snapshot-20181029-backup lxd/containers/top2db-master@snapshot-20181029-0400-restorepoint lxd/containers/top2db-master@snapshot-20181029-2000-restorepoint lxd/containers/top2db-master
AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD CREATION
- 2.03G - - - - Sat Oct 21 18:39 2017
- 596M - - - - Tue Nov 21 2:00 2017
- 462M - - - - Wed Nov 22 2:00 2017
- 573M - - - - Thu Nov 23 2:00 2017
- 1.25G - - - - Fri Dec 1 2:00 2017
- 1.47G - - - - Sun Dec 17 17:10 2017
- 1.17G - - - - Wed Jul 25 2:00 2018
- 932M - - - - Tue Jul 31 2:00 2018
- 979M - - - - Mon Aug 6 2:00 2018
- 1014M - - - - Sun Aug 12 2:00 2018
- 990M - - - - Sat Aug 18 2:00 2018
- 985M - - - - Fri Aug 24 2:00 2018
- 1.04G - - - - Thu Aug 30 2:00 2018
- 979M - - - - Wed Sep 5 2:00 2018
- 926M - - - - Fri Sep 7 2:00 2018
- 913M - - - - Tue Sep 11 2:00 2018
- 905M - - - - Thu Sep 13 2:00 2018
- 917M - - - - Mon Sep 17 2:00 2018
- 930M - - - - Wed Sep 19 2:00 2018
- 338M - - - - Thu Sep 20 22:28 2018
- 345M - - - - Fri Sep 21 2:00 2018
- 486M - - - - Sat Sep 22 2:00 2018
- 427M - - - - Sun Sep 23 2:00 2018
- 492M - - - - Mon Sep 24 2:00 2018
- 853M - - - - Tue Sep 25 2:00 2018
- 839M - - - - Wed Sep 26 2:00 2018
- 841M - - - - Thu Sep 27 2:00 2018
- 840M - - - - Fri Sep 28 2:00 2018
- 482M - - - - Sat Sep 29 2:00 2018
- 435M - - - - Sun Sep 30 2:00 2018
- 514M - - - - Mon Oct 1 2:00 2018
- 871M - - - - Tue Oct 2 2:00 2018
- 875M - - - - Wed Oct 3 2:00 2018
- 789M - - - - Thu Oct 4 2:00 2018
- 783M - - - - Fri Oct 5 2:00 2018
- 474M - - - - Sat Oct 6 2:00 2018
- 420M - - - - Sun Oct 7 2:00 2018
- 502M - - - - Mon Oct 8 2:00 2018
- 855M - - - - Tue Oct 9 2:00 2018
- 857M - - - - Wed Oct 10 2:00 2018
- 864M - - - - Thu Oct 11 2:00 2018
- 792M - - - - Fri Oct 12 2:00 2018
- 432M - - - - Sat Oct 13 2:00 2018
- 431M - - - - Sun Oct 14 2:00 2018
- 502M - - - - Mon Oct 15 2:00 2018
- 886M - - - - Tue Oct 16 2:00 2018
- 924M - - - - Wed Oct 17 2:00 2018
- 894M - - - - Fri Oct 19 2:00 2018
- 433M - - - - Sat Oct 20 2:00 2018
- 357M - - - - Sun Oct 21 2:00 2018
- 498M - - - - Mon Oct 22 2:00 2018
- 126M - - - - Tue Oct 23 2:00 2018
- 116M - - - - Tue Oct 23 4:00 2018
- 108M - - - - Tue Oct 23 20:00 2018
- 19.9M - - - - Wed Oct 24 2:00 2018
- 110M - - - - Wed Oct 24 4:00 2018
- 37.6M - - - - Wed Oct 24 20:00 2018
- 32.0M - - - - Thu Oct 25 2:00 2018
- 116M - - - - Thu Oct 25 4:00 2018
- 36.2M - - - - Thu Oct 25 20:00 2018
- 30.7M - - - - Fri Oct 26 2:00 2018
- 113M - - - - Fri Oct 26 4:00 2018
- 37.4M - - - - Fri Oct 26 20:00 2018
- 16.4M - - - - Sat Oct 27 2:00 2018
- 26.4M - - - - Sat Oct 27 4:00 2018
- 27.4M - - - - Sat Oct 27 20:00 2018
- 20.4M - - - - Sun Oct 28 2:00 2018
- 21.0M - - - - Sun Oct 28 4:00 2018
- 96.1M - - - - Sun Oct 28 20:00 2018
- 24.6M - - - - Mon Oct 29 2:00 2018
- 56.4M - - - - Mon Oct 29 4:00 2018
- 35.6M - - - - Mon Oct 29 20:00 2018

Any ideas what might be causing this? There are four other containers on the same host but they are not affected by this…

stgraber · October 29, 2018, 11:33pm

The copy- snapshots are normally created when a container is copied into another lxc copy top2db-master blah, they are however only meant to be kept around so long as the target container exists, once that container goes away, the copy- snapshot it was created from should disappear.

Can you show zfs list -t all -o name,origin?

wexi79 · October 30, 2018, 9:05am

root@lxd-2-top2:~# zfs list -t all -o name,origin
NAME ORIGIN
lxd -
lxd/containers -
lxd/containers/jasper lxd/images/8220e89e33e6f62b56cb451cfed61574074416a66a6e7c61ff574d95572e6661@readonly
lxd/containers/jasper@snapshot-20171008 -
lxd/containers/jasper@snapshot-20171009 -
lxd/containers/jasper@snapshot-20171012 -
lxd/containers/jasper@snapshot-20181022-backup -
lxd/containers/jasper@snapshot-20181023-backup -
lxd/containers/jasper@snapshot-20181024-backup -
lxd/containers/jasper@snapshot-20181025-backup -
lxd/containers/jasper@snapshot-20181026-backup -
lxd/containers/jasper@snapshot-20181027-backup -
lxd/containers/jasper@snapshot-20181028-backup -
lxd/containers/jasper@snapshot-20181029-backup -
lxd/containers/jasper@snapshot-20181030-backup -
lxd/containers/redis lxd/deleted/images/61d54418874f2f84e24ddd6934b3bb759ca76cbc49820da7d34f8b5b778e4816@readonly
lxd/containers/redis@snapshot-20181022-backup -
lxd/containers/redis@snapshot-20181023-backup -
lxd/containers/redis@snapshot-20181024-backup -
lxd/containers/redis@snapshot-20181025-backup -
lxd/containers/redis@snapshot-20181026-backup -
lxd/containers/redis@snapshot-20181027-backup -
lxd/containers/redis@snapshot-20181028-backup -
lxd/containers/redis@snapshot-20181029-backup -
lxd/containers/redis@snapshot-20181030-backup -
lxd/containers/top12 lxd/deleted/images/3927ed0cb91f768a45d45bdd261b0231918e4f672ba24d9b9f5559eba2ce4f00@readonly
lxd/containers/top12@snapshot-empty-container -
lxd/containers/top12@snapshot-mysql-5.6-installed -
lxd/containers/top12@snapshot-mysql-ssl-ready -
lxd/containers/top12@snapshot-apache-ssl-ready -
lxd/containers/top12@snapshot-laravel-sites-on-place -
lxd/containers/top12@snapshot-20181022-backup -
lxd/containers/top12@snapshot-20181023-backup -
lxd/containers/top12@snapshot-20181024-backup -
lxd/containers/top12@snapshot-20181025-backup -
lxd/containers/top12@snapshot-20181026-backup -
lxd/containers/top12@snapshot-20181027-backup -
lxd/containers/top12@snapshot-20181028-backup -
lxd/containers/top12@snapshot-20181029-backup -
lxd/containers/top12@snapshot-20181030-backup -
lxd/containers/top20 lxd/images/8220e89e33e6f62b56cb451cfed61574074416a66a6e7c61ff574d95572e6661@readonly
lxd/containers/top20@snapshot-initial -
lxd/containers/top20@snapshot-before_setfacl -
lxd/containers/top20@snapshot-copy2dev -
lxd/containers/top20@snapshot-20171008 -
lxd/containers/top20@snapshot-20171009 -
lxd/containers/top20@snapshot-20171012 -
lxd/containers/top20@snapshot-20180921-before-update -
lxd/containers/top20@snapshot-20181022-backup -
lxd/containers/top20@snapshot-20181023-backup -
lxd/containers/top20@snapshot-20181024-backup -
lxd/containers/top20@snapshot-20181025-backup -
lxd/containers/top20@snapshot-20181026-backup -
lxd/containers/top20@snapshot-20181027-backup -
lxd/containers/top20@snapshot-20181028-backup -
lxd/containers/top20@snapshot-20181029-backup -
lxd/containers/top20@snapshot-20181030-backup -
lxd/containers/top2db-master -
lxd/containers/top2db-master@snapshot-20171021-new-prod -
lxd/containers/top2db-master@copy-0a1a537b-1a89-4817-9b32-2c0a57568606 -
lxd/containers/top2db-master@copy-493d6e4e-0315-473c-98a6-65d02a3058d5 -
lxd/containers/top2db-master@copy-f4d87fa9-5bf3-4085-8e9b-b4bdc42e3cf8 -
lxd/containers/top2db-master@copy-b2dd4f9c-81d4-4eaf-b7ec-c3f2ce69f900 -
lxd/containers/top2db-master@snapshot-remove_binlog -
lxd/containers/top2db-master@copy-deafa6f5-e474-408e-859a-25279e855742 -
lxd/containers/top2db-master@copy-b5fff947-337e-4fb8-a332-596e63ba6a0a -
lxd/containers/top2db-master@copy-14501791-8209-4e0c-bd65-6611c53c4199 -
lxd/containers/top2db-master@copy-04de4d76-f14c-4152-9931-9dc6f70e50d9 -
lxd/containers/top2db-master@copy-d8ee0ff3-f1af-405a-87c0-fed3aadbdc06 -
lxd/containers/top2db-master@copy-0b0035e7-5acd-4ab6-8437-75f9fe724df2 -
lxd/containers/top2db-master@copy-d2343864-e576-4c1e-b332-cbb4bf3c03b2 -
lxd/containers/top2db-master@copy-7472222f-97ba-4b4d-bba3-2cc250cb882e -
lxd/containers/top2db-master@copy-92a74080-b747-4056-b3d3-6dba3264c0a5 -
lxd/containers/top2db-master@copy-64991c80-0257-45b3-8bcb-e3f5db315110 -
lxd/containers/top2db-master@copy-9435a1e8-5f43-49d5-a081-de66cc909520 -
lxd/containers/top2db-master@copy-0091e490-1642-42a2-b80a-d0eef223d899 -
lxd/containers/top2db-master@copy-fed07265-874e-43eb-9ae1-32a27861d969 -
lxd/containers/top2db-master@snapshot-20180921-before-update -
lxd/containers/top2db-master@copy-d6668fd4-36fd-4091-a36d-0806c2243fd4 -
lxd/containers/top2db-master@copy-c9e5e09e-5473-478c-b199-ed3050c6f2f8 -
lxd/containers/top2db-master@copy-10e6e0fc-dd23-4257-b0ca-a9bce9db6d1c -
lxd/containers/top2db-master@copy-1d8c9108-879f-4466-a170-778adbf05bb2 -
lxd/containers/top2db-master@copy-ce9fe8b3-4b09-4758-8287-c463c54f8d8d -
lxd/containers/top2db-master@copy-a9f1dc02-389c-4e5a-a8fa-dc946d7bbac3 -
lxd/containers/top2db-master@copy-0255e2a9-e0f5-43ec-be46-f7f0ed492bfa -
lxd/containers/top2db-master@copy-d3020861-8d1c-4ae7-80ca-0c79861d80ee -
lxd/containers/top2db-master@copy-c07c5e07-f797-4842-9ec2-9c6e2990fda9 -
lxd/containers/top2db-master@copy-062e4ca8-8ece-4a6b-ac14-3db244ff0482 -
lxd/containers/top2db-master@copy-07e9e5f6-b236-45a4-abdb-d95edfa53ce8 -
lxd/containers/top2db-master@copy-c4b831db-aa67-4ec9-94e4-73446eb17a28 -
lxd/containers/top2db-master@copy-5318b9fd-4201-45f5-a739-df939e115ae5 -
lxd/containers/top2db-master@copy-aca3dcde-58cd-4521-bc1d-c439a2d33971 -
lxd/containers/top2db-master@copy-8fdc46d8-aaaa-4fb6-9ea9-6b2561c2e83f -
lxd/containers/top2db-master@copy-87b5f473-2b35-4086-8ef2-dd3ab8c038b8 -
lxd/containers/top2db-master@copy-aece6d05-a495-4443-9f26-99e309ac5b3a -
lxd/containers/top2db-master@copy-dcffe52a-2719-442c-af35-a473ab941a40 -
lxd/containers/top2db-master@copy-539776c5-7b5a-4086-8400-12a272806042 -
lxd/containers/top2db-master@copy-2718305d-df26-42a2-ab52-d758bbd59603 -
lxd/containers/top2db-master@copy-59fe49ae-f4ea-4213-b50f-9d6fad9ff055 -
lxd/containers/top2db-master@copy-b3763152-a5a7-45bd-bc90-90cddfbc5a6f -
lxd/containers/top2db-master@copy-dbbc0c81-f0b8-438c-8b8c-995d2a3690cc -
lxd/containers/top2db-master@copy-d2466db2-8bcb-44a0-bfa9-fd2b7d8b2f9a -
lxd/containers/top2db-master@copy-e0ec7363-fafc-45e1-bb60-bbfa6511d841 -
lxd/containers/top2db-master@copy-7ba29723-0160-47bc-adfd-213e35e93f01 -
lxd/containers/top2db-master@copy-7b66e255-08e1-491a-87f1-b716664accca -
lxd/containers/top2db-master@copy-4dd09422-c2c0-48ed-8dd2-b622fad9d695 -
lxd/containers/top2db-master@copy-d873f90f-e7f5-4912-893e-9ea630917435 -
lxd/containers/top2db-master@copy-cd7c46c3-6a8d-48c4-9c5e-c43c6461c3c3 -
lxd/containers/top2db-master@snapshot-20181022-backup -
lxd/containers/top2db-master@snapshot-20181023-backup -
lxd/containers/top2db-master@snapshot-20181023-0400-restorepoint -
lxd/containers/top2db-master@snapshot-20181023-2000-restorepoint -
lxd/containers/top2db-master@snapshot-20181024-backup -
lxd/containers/top2db-master@snapshot-20181024-0400-restorepoint -
lxd/containers/top2db-master@snapshot-20181024-2000-restorepoint -
lxd/containers/top2db-master@snapshot-20181025-backup -
lxd/containers/top2db-master@snapshot-20181025-0400-restorepoint -
lxd/containers/top2db-master@snapshot-20181025-2000-restorepoint -
lxd/containers/top2db-master@snapshot-20181026-backup -
lxd/containers/top2db-master@snapshot-20181026-0400-restorepoint -
lxd/containers/top2db-master@snapshot-20181026-2000-restorepoint -
lxd/containers/top2db-master@snapshot-20181027-backup -
lxd/containers/top2db-master@snapshot-20181027-0400-restorepoint -
lxd/containers/top2db-master@snapshot-20181027-2000-restorepoint -
lxd/containers/top2db-master@snapshot-20181028-backup -
lxd/containers/top2db-master@snapshot-20181028-0400-restorepoint -
lxd/containers/top2db-master@snapshot-20181028-2000-restorepoint -
lxd/containers/top2db-master@snapshot-20181029-backup -
lxd/containers/top2db-master@snapshot-20181029-0400-restorepoint -
lxd/containers/top2db-master@snapshot-20181029-2000-restorepoint -
lxd/containers/top2db-master@snapshot-20181030-backup -
lxd/containers/top2db-master@snapshot-20181030-0400-restorepoint -
lxd/deleted -
lxd/deleted/images -
lxd/deleted/images/3927ed0cb91f768a45d45bdd261b0231918e4f672ba24d9b9f5559eba2ce4f00 -
lxd/deleted/images/3927ed0cb91f768a45d45bdd261b0231918e4f672ba24d9b9f5559eba2ce4f00@readonly -
lxd/deleted/images/61d54418874f2f84e24ddd6934b3bb759ca76cbc49820da7d34f8b5b778e4816 -
lxd/deleted/images/61d54418874f2f84e24ddd6934b3bb759ca76cbc49820da7d34f8b5b778e4816@readonly -
lxd/images -
lxd/images/8220e89e33e6f62b56cb451cfed61574074416a66a6e7c61ff574d95572e6661 -
lxd/images/8220e89e33e6f62b56cb451cfed61574074416a66a6e7c61ff574d95572e6661@readonly -
lxd/snapshots -
lxd/snapshots/jasper -
lxd/snapshots/redis -
lxd/snapshots/top12 -
lxd/snapshots/top20 -
lxd/snapshots/top2db-master -
lxd/snapshots/top2db-master/20171121-backup lxd/containers/top2db-master@copy-0a1a537b-1a89-4817-9b32-2c0a57568606
lxd/snapshots/top2db-master/20171122-backup lxd/containers/top2db-master@copy-493d6e4e-0315-473c-98a6-65d02a3058d5
lxd/snapshots/top2db-master/20171123-backup lxd/containers/top2db-master@copy-f4d87fa9-5bf3-4085-8e9b-b4bdc42e3cf8
lxd/snapshots/top2db-master/20171201-backup lxd/containers/top2db-master@copy-b2dd4f9c-81d4-4eaf-b7ec-c3f2ce69f900
lxd/snapshots/top2db-master/20180725-backup lxd/containers/top2db-master@copy-deafa6f5-e474-408e-859a-25279e855742
lxd/snapshots/top2db-master/20180731-backup lxd/containers/top2db-master@copy-b5fff947-337e-4fb8-a332-596e63ba6a0a
lxd/snapshots/top2db-master/20180806-backup lxd/containers/top2db-master@copy-14501791-8209-4e0c-bd65-6611c53c4199
lxd/snapshots/top2db-master/20180812-backup lxd/containers/top2db-master@copy-04de4d76-f14c-4152-9931-9dc6f70e50d9
lxd/snapshots/top2db-master/20180818-backup lxd/containers/top2db-master@copy-d8ee0ff3-f1af-405a-87c0-fed3aadbdc06
lxd/snapshots/top2db-master/20180824-backup lxd/containers/top2db-master@copy-0b0035e7-5acd-4ab6-8437-75f9fe724df2
lxd/snapshots/top2db-master/20180830-backup lxd/containers/top2db-master@copy-d2343864-e576-4c1e-b332-cbb4bf3c03b2
lxd/snapshots/top2db-master/20180905-backup lxd/containers/top2db-master@copy-7472222f-97ba-4b4d-bba3-2cc250cb882e
lxd/snapshots/top2db-master/20180907-backup lxd/containers/top2db-master@copy-92a74080-b747-4056-b3d3-6dba3264c0a5
lxd/snapshots/top2db-master/20180911-backup lxd/containers/top2db-master@copy-64991c80-0257-45b3-8bcb-e3f5db315110
lxd/snapshots/top2db-master/20180913-backup lxd/containers/top2db-master@copy-9435a1e8-5f43-49d5-a081-de66cc909520
lxd/snapshots/top2db-master/20180917-backup lxd/containers/top2db-master@copy-0091e490-1642-42a2-b80a-d0eef223d899
lxd/snapshots/top2db-master/20180919-backup lxd/containers/top2db-master@copy-fed07265-874e-43eb-9ae1-32a27861d969
lxd/snapshots/top2db-master/20180921-backup lxd/containers/top2db-master@copy-d6668fd4-36fd-4091-a36d-0806c2243fd4
lxd/snapshots/top2db-master/20180922-backup lxd/containers/top2db-master@copy-c9e5e09e-5473-478c-b199-ed3050c6f2f8
lxd/snapshots/top2db-master/20180923-backup lxd/containers/top2db-master@copy-10e6e0fc-dd23-4257-b0ca-a9bce9db6d1c
lxd/snapshots/top2db-master/20180924-backup lxd/containers/top2db-master@copy-1d8c9108-879f-4466-a170-778adbf05bb2
lxd/snapshots/top2db-master/20180925-backup lxd/containers/top2db-master@copy-ce9fe8b3-4b09-4758-8287-c463c54f8d8d
lxd/snapshots/top2db-master/20180926-backup lxd/containers/top2db-master@copy-a9f1dc02-389c-4e5a-a8fa-dc946d7bbac3
lxd/snapshots/top2db-master/20180927-backup lxd/containers/top2db-master@copy-0255e2a9-e0f5-43ec-be46-f7f0ed492bfa
lxd/snapshots/top2db-master/20180928-backup lxd/containers/top2db-master@copy-d3020861-8d1c-4ae7-80ca-0c79861d80ee
lxd/snapshots/top2db-master/20180929-backup lxd/containers/top2db-master@copy-c07c5e07-f797-4842-9ec2-9c6e2990fda9
lxd/snapshots/top2db-master/20180930-backup lxd/containers/top2db-master@copy-062e4ca8-8ece-4a6b-ac14-3db244ff0482
lxd/snapshots/top2db-master/20181001-backup lxd/containers/top2db-master@copy-07e9e5f6-b236-45a4-abdb-d95edfa53ce8
lxd/snapshots/top2db-master/20181002-backup lxd/containers/top2db-master@copy-c4b831db-aa67-4ec9-94e4-73446eb17a28
lxd/snapshots/top2db-master/20181003-backup lxd/containers/top2db-master@copy-5318b9fd-4201-45f5-a739-df939e115ae5
lxd/snapshots/top2db-master/20181004-backup lxd/containers/top2db-master@copy-aca3dcde-58cd-4521-bc1d-c439a2d33971
lxd/snapshots/top2db-master/20181005-backup lxd/containers/top2db-master@copy-8fdc46d8-aaaa-4fb6-9ea9-6b2561c2e83f
lxd/snapshots/top2db-master/20181006-backup lxd/containers/top2db-master@copy-87b5f473-2b35-4086-8ef2-dd3ab8c038b8
lxd/snapshots/top2db-master/20181007-backup lxd/containers/top2db-master@copy-aece6d05-a495-4443-9f26-99e309ac5b3a
lxd/snapshots/top2db-master/20181008-backup lxd/containers/top2db-master@copy-dcffe52a-2719-442c-af35-a473ab941a40
lxd/snapshots/top2db-master/20181009-backup lxd/containers/top2db-master@copy-539776c5-7b5a-4086-8400-12a272806042
lxd/snapshots/top2db-master/20181010-backup lxd/containers/top2db-master@copy-2718305d-df26-42a2-ab52-d758bbd59603
lxd/snapshots/top2db-master/20181011-backup lxd/containers/top2db-master@copy-59fe49ae-f4ea-4213-b50f-9d6fad9ff055
lxd/snapshots/top2db-master/20181012-backup lxd/containers/top2db-master@copy-b3763152-a5a7-45bd-bc90-90cddfbc5a6f
lxd/snapshots/top2db-master/20181013-backup lxd/containers/top2db-master@copy-dbbc0c81-f0b8-438c-8b8c-995d2a3690cc
lxd/snapshots/top2db-master/20181014-backup lxd/containers/top2db-master@copy-d2466db2-8bcb-44a0-bfa9-fd2b7d8b2f9a
lxd/snapshots/top2db-master/20181015-backup lxd/containers/top2db-master@copy-e0ec7363-fafc-45e1-bb60-bbfa6511d841
lxd/snapshots/top2db-master/20181016-backup lxd/containers/top2db-master@copy-7ba29723-0160-47bc-adfd-213e35e93f01
lxd/snapshots/top2db-master/20181017-backup lxd/containers/top2db-master@copy-7b66e255-08e1-491a-87f1-b716664accca
lxd/snapshots/top2db-master/20181019-backup lxd/containers/top2db-master@copy-4dd09422-c2c0-48ed-8dd2-b622fad9d695
lxd/snapshots/top2db-master/20181020-backup lxd/containers/top2db-master@copy-d873f90f-e7f5-4912-893e-9ea630917435
lxd/snapshots/top2db-master/20181021-backup lxd/containers/top2db-master@copy-cd7c46c3-6a8d-48c4-9c5e-c43c6461c3c3
lxd/snapshots/top2db-master/20181023-backup lxd/containers/top2db-master@snapshot-20181023-backup
lxd/snapshots/top2db-master/20181025-backup lxd/containers/top2db-master@snapshot-20181025-backup
lxd/snapshots/top2db-master/20181026-backup lxd/containers/top2db-master@snapshot-20181026-backup
lxd/snapshots/top2db-master/20181027-backup lxd/containers/top2db-master@snapshot-20181027-backup
lxd/snapshots/top2db-master/20181029-backup lxd/containers/top2db-master@snapshot-20181029-backup

stgraber · October 30, 2018, 9:47pm

Oh, so you have a whole bunch of snapshots that appear to be mounted under lxd/snapshots and didn’t get cleaned up after they weren’t needed there anymore (typically after export or copy).

So I’d say you should be safe doing:

zfs destroy -r lxd/snapshots

And then delete through zfs destroy any snapshot named copy-* (though don’t pass -r that time around, just in case there is something depending on the snapshot, better get an error than delete something by accident).