Новая установка, сразуна версию 5.6

@Michaelikus в зависимости от того что за интерфесы

Все виртаулки пересозданы вручную, только образ снят со старых

Настройки самих виртуалок перепроверил - везде стоит allow_orphans

проверь еще через cli, может это баг sunstone

или как конкретно ошибка звучит?

onevm show $VMID --xml показывает, что yes

<ALLOW_ORPHANS><![CDATA[YES]]></ALLOW_ORPHANS>
   <ALLOW_ORPHANS><![CDATA[YES]]></ALLOW_ORPHANS>

А ошибка в принципе странная

ага, а попробуй снапшот через cli снести

Часть лога

Tue Nov 13 12:15:30 2018 [Z0][VM][I]: New LCM state is DISK_SNAPSHOT_DELETE_POWEROFF
Tue Nov 13 12:15:32 2018 [Z0][TM][I]: Command execution failed (exit code: 17): /var/lib/one/remotes/tm/ceph/snap_delete msk-kvm-02:/var/lib/one//datastores/100/3/disk.1 3 3 101
Tue Nov 13 12:15:32 2018 [Z0][TM][E]: snap_delete: Command " RBD="rbd --id libvirt"
Tue Nov 13 12:15:32 2018 [Z0][TM][I]:
Tue Nov 13 12:15:32 2018 [Z0][TM][I]: rbd_check_2 one/one-3-3-1
Tue Nov 13 12:15:32 2018 [Z0][TM][I]:
Tue Nov 13 12:15:32 2018 [Z0][TM][I]: RBD_TGT=$(rbd_find_snap one/one-3-3-1 3)
Tue Nov 13 12:15:32 2018 [Z0][TM][I]:
Tue Nov 13 12:15:32 2018 [Z0][TM][I]: if [ -z "$RBD_TGT" ]; then
Tue Nov 13 12:15:32 2018 [Z0][TM][I]: echo "Target RBD not found." >&2
Tue Nov 13 12:15:32 2018 [Z0][TM][I]: exit 1
Tue Nov 13 12:15:32 2018 [Z0][TM][I]: fi
Tue Nov 13 12:15:33 2018 [Z0][TM][I]:
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: rbd --id libvirt snap unprotect ${RBD_TGT}@3
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: rbd --id libvirt snap rm ${RBD_TGT}@3
Tue Nov 13 12:15:33 2018 [Z0][TM][I]:
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: if [ "${RBD_TGT}" != "one/one-3-3-1" ]; then
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: rbd_rename_rm one/one-3-3-1 ${RBD_TGT}
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: fi" failed: 2018-11-13 12:15:32.132 7f2e4ffff700 -1 librbd::SnapshotUnprotectRequest: cannot unprotect: at least 1 child(ren) [2db6b6b8b4567] in pool 'one'
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: 2018-11-13 12:15:32.132 7f2e4ffff700 -1 librbd::SnapshotUnprotectRequest: encountered error: (16) Device or resource busy
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: 2018-11-13 12:15:32.132 7f2e4ffff700 -1 librbd::SnapshotUnprotectRequest: 0x562a6a649120 should_complete_error: ret_val=-16
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: 2018-11-13 12:15:32.134 7f2e4ffff700 -1 librbd::SnapshotUnprotectRequest: 0x562a6a649120 should_complete_error: ret_val=-16
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: rbd: unprotecting snap failed: (16) Device or resource busy
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: Removing snap2018-11-13 12:15:32.248 7f22effff700 -1 librbd::Operations: snapshot is protected: 0% complete...failed.
Tue Nov 13 12:15:33 2018 [Z0][TM][I]:
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: rbd: snapshot '3' is protected from removal.
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: 2018-11-13 12:15:32.490 7f4fb2796900 -1 librbd::Operations: rbd image one-3-3-1-3 already exists
Tue Nov 13 12:15:33 2018 [Z0][TM][I]: rbd: rename error: (17) File exists
Tue Nov 13 12:15:33 2018 [Z0][TM][E]: Error deleting snapshot 3
Tue Nov 13 12:15:33 2018 [Z0][TM][E]: Error executing image transfer script: Error deleting snapshot 3
Tue Nov 13 12:15:33 2018 [Z0][LCM][E]: VM disk snapshot operation failed.

проблема в ceph а не в opennebula api

Я вот тоже об этом подумал, но не могу понять в чём именно

Была проблема с правами, я libvirt'у выставил сначала не те права, по старой инструкции, потом поставил нужные

Так вот не понятно откуда взялись дочки

команда rbd snap unprotect - не работает

one-3            40 GiB                       2
one-3@snap       40 GiB                       2 yes
one-3-3-1        40 GiB one/one-3-3-1-4@4     2
one-3-3-1-0      40 GiB one/one-3@snap        2
one-3-3-1-0@0    40 GiB one/one-3@snap        2 yes
one-3-3-1-3      40 GiB one/one-3-3-1-0@0     2
one-3-3-1-3@3    40 GiB one/one-3-3-1-0@0     2 yes
one-3-3-1-4      40 GiB one/one-3-3-1-3@3     2
one-3-3-1-4@4    40 GiB one/one-3-3-1-3@3     2 yes

попробуй подебажить ее, выполнив вручную