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Bug #63888
openrbd/clone: parent image does not exist but child image still have clone-child tag
% Done:
0%
Source:
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
# rbd -p replicapool-ssd children csi-snap-ad37e254-9fb4-11ee-a46b-7ab9ec75308b 2023-12-22T08:31:46.582+0000 7f7f55347500 5 librbd::io::ImageRequestWQ: 0x7f7f3c0015b0 ImageRequestWQ: ictx=0x563664c28db0 2023-12-22T08:31:46.582+0000 7f7f55347500 20 librbd::ImageState: 0x563664c659a0 open 2023-12-22T08:31:46.582+0000 7f7f55347500 10 librbd::ImageState: 0x563664c659a0 0x563664c659a0 send_open_unlock 2023-12-22T08:31:46.582+0000 7f7f55347500 10 librbd::image::OpenRequest: 0x563664c65c70 send_v2_detect_header 2023-12-22T08:31:46.583+0000 7f7f2bfff700 10 librbd::image::OpenRequest: handle_v2_detect_header: r=0 2023-12-22T08:31:46.583+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x563664c65c70 send_v2_get_id 2023-12-22T08:31:46.583+0000 7f7f2bfff700 10 librbd::image::OpenRequest: handle_v2_get_id: r=0 2023-12-22T08:31:46.583+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x563664c65c70 send_v2_get_initial_metadata 2023-12-22T08:31:46.584+0000 7f7f2bfff700 10 librbd::image::OpenRequest: handle_v2_get_initial_metadata: r=0 2023-12-22T08:31:46.584+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x563664c65c70 send_v2_get_create_timestamp 2023-12-22T08:31:46.585+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x563664c65c70 handle_v2_get_create_timestamp: r=0 2023-12-22T08:31:46.585+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x563664c65c70 send_v2_get_access_modify_timestamp 2023-12-22T08:31:46.585+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x563664c65c70 handle_v2_get_access_modify_timestamp: r=0 2023-12-22T08:31:46.585+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x563664c65c70 send_v2_get_data_pool 2023-12-22T08:31:46.585+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x563664c65c70 handle_v2_get_data_pool: r=0 2023-12-22T08:31:46.585+0000 7f7f2bfff700 10 librbd::ImageCtx: init_layout stripe_unit 4194304 stripe_count 1 object_size 4194304 prefix rbd_data.dddf572dfa189a format rbd_data.dddf572dfa189a.%016llx 2023-12-22T08:31:46.586+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x563664c65c70 send_refresh 2023-12-22T08:31:46.586+0000 7f7f2bfff700 10 librbd::ConfigWatcher: init: 2023-12-22T08:31:46.586+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 send_v2_get_mutable_metadata 2023-12-22T08:31:46.586+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 handle_v2_get_mutable_metadata: r=0 2023-12-22T08:31:46.586+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 send_v2_get_parent: legacy=0 2023-12-22T08:31:46.586+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 handle_v2_get_parent: r=0 2023-12-22T08:31:46.586+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 send_v2_get_metadata 2023-12-22T08:31:46.586+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c017150 metadata_list: start_key=conf_ 2023-12-22T08:31:46.586+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c017150 handle_metadata_list: r=0 2023-12-22T08:31:46.586+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c017150 finish: r=0 2023-12-22T08:31:46.587+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 handle_v2_get_metadata: r=0 2023-12-22T08:31:46.587+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 send_v2_get_pool_metadata 2023-12-22T08:31:46.587+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c016cd0 metadata_list: start_key=conf_ 2023-12-22T08:31:46.588+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c016cd0 handle_metadata_list: r=0 2023-12-22T08:31:46.588+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c016cd0 finish: r=0 2023-12-22T08:31:46.588+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 handle_v2_get_pool_metadata: r=0 2023-12-22T08:31:46.588+0000 7f7f2bfff700 20 librbd::ImageCtx: apply_metadata 2023-12-22T08:31:46.588+0000 7f7f2bfff700 5 librbd::ImageCtx: 0x563664c28db0: disabling zero-copy writes 2023-12-22T08:31:46.588+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 send_v2_get_op_features 2023-12-22T08:31:46.588+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 handle_v2_get_op_features: r=0 2023-12-22T08:31:46.588+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 send_v2_get_group 2023-12-22T08:31:46.588+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 handle_v2_get_group: r=0 2023-12-22T08:31:46.588+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 send_v2_get_snapshots 2023-12-22T08:31:46.588+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 handle_v2_get_snapshots: r=0 2023-12-22T08:31:46.588+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c012190 send_v2_refresh_parent 2023-12-22T08:31:46.588+0000 7f7f2bfff700 10 librbd::image::RefreshParentRequest: 0x7f7f1c0153e0 send_open_parent 2023-12-22T08:31:46.590+0000 7f7f2bfff700 5 librbd::io::ImageRequestWQ: 0x7f7f1c05d930 ImageRequestWQ: ictx=0x7f7f1c01cea0 2023-12-22T08:31:46.590+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 send_v2_get_name 2023-12-22T08:31:46.591+0000 7f7f2bfff700 10 librbd::image::OpenRequest: handle_v2_get_name: r=0 2023-12-22T08:31:46.591+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 send_v2_get_initial_metadata 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::image::OpenRequest: handle_v2_get_initial_metadata: r=0 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 send_v2_get_create_timestamp 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 handle_v2_get_create_timestamp: r=0 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 send_v2_get_access_modify_timestamp 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 handle_v2_get_access_modify_timestamp: r=0 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 send_v2_get_data_pool 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 handle_v2_get_data_pool: r=0 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::ImageCtx: init_layout stripe_unit 4194304 stripe_count 1 object_size 4194304 prefix rbd_data.dddf57aa5a5a3a format rbd_data.dddf57aa5a5a3a.%016llx 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 send_refresh 2023-12-22T08:31:46.593+0000 7f7f2bfff700 10 librbd::ConfigWatcher: init: 2023-12-22T08:31:46.594+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 send_v2_get_mutable_metadata 2023-12-22T08:31:46.594+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 handle_v2_get_mutable_metadata: r=0 2023-12-22T08:31:46.594+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 send_v2_get_parent: legacy=0 2023-12-22T08:31:46.594+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 handle_v2_get_parent: r=0 2023-12-22T08:31:46.594+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 send_v2_get_metadata 2023-12-22T08:31:46.594+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c016cd0 metadata_list: start_key=conf_ 2023-12-22T08:31:46.594+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c016cd0 handle_metadata_list: r=0 2023-12-22T08:31:46.594+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c016cd0 finish: r=0 2023-12-22T08:31:46.594+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 handle_v2_get_metadata: r=0 2023-12-22T08:31:46.594+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 send_v2_get_pool_metadata 2023-12-22T08:31:46.594+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c017150 metadata_list: start_key=conf_ 2023-12-22T08:31:46.595+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c017150 handle_metadata_list: r=0 2023-12-22T08:31:46.595+0000 7f7f2bfff700 15 librbd::image::GetMetadataRequest: 0x7f7f1c017150 finish: r=0 2023-12-22T08:31:46.595+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 handle_v2_get_pool_metadata: r=0 2023-12-22T08:31:46.595+0000 7f7f2bfff700 20 librbd::ImageCtx: apply_metadata 2023-12-22T08:31:46.595+0000 7f7f2bfff700 5 librbd::ImageCtx: 0x7f7f1c01cea0: disabling zero-copy writes 2023-12-22T08:31:46.595+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 send_v2_get_op_features 2023-12-22T08:31:46.595+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 handle_v2_get_op_features: r=0 2023-12-22T08:31:46.595+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 send_v2_get_group 2023-12-22T08:31:46.595+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 handle_v2_get_group: r=0 2023-12-22T08:31:46.595+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 send_v2_get_snapshots 2023-12-22T08:31:46.595+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 handle_v2_get_snapshots: r=0 2023-12-22T08:31:46.595+0000 7f7f2bfff700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 send_v2_apply 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 handle_v2_apply 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::image::RefreshRequest: 0x7f7f1c06cc70 apply 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::image::RefreshRequest: new snapshot id=1098 name=2e13d4ed-f447-41c0-8731-aad6bc522086 size=100931731456 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 send_flush_aio 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::AsyncOperation: 0x7f7f24002668 start_op 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::ImageRequest: 0x7f7f2b7f8b10 send: aio_flush: ictx=0x7f7f1c01cea0, completion=0x7f7f24002570 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::AioCompletion: 0x7f7f24002570 set_request_count: pending=1 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::ObjectDispatcher: 0x7f7f1c05bab0 send: object_dispatch_spec=0x7f7f24002790 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::AioCompletion: 0x7f7f24002570 complete_request: cb=1, pending=0 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::AioCompletion: 0x7f7f24002570 finalize: r=0 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::RefreshRequest: 0x7f7f1c06cc70 handle_flush_aio: r=0 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::AsyncOperation: 0x7f7f24002668 finish_op 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::OpenRequest: handle_refresh: r=0 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::OpenRequest: send_parent_cache: r=0 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::OpenRequest: 0x7f7f1c05bf30 send_set_snap 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::SetSnapRequest: send_block_writes 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 5 librbd::io::ImageRequestWQ: 0x7f7f1c05d930 block_writes: 0x7f7f1c01cea0, num=1 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::AsyncOperation: 0x7f7f24002668 start_op 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::ImageRequest: 0x7f7f2b7f8900 send: aio_flush: ictx=0x7f7f1c01cea0, completion=0x7f7f24002570 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::AioCompletion: 0x7f7f24002570 set_request_count: pending=1 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::ObjectDispatcher: 0x7f7f1c05bab0 send: object_dispatch_spec=0x7f7f24002790 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::AioCompletion: 0x7f7f24002570 complete_request: cb=1, pending=0 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 20 librbd::io::AioCompletion: 0x7f7f24002570 finalize: r=0 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::SetSnapRequest: handle_block_writes: r=0 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::SetSnapRequest: send_refresh_parent 2023-12-22T08:31:46.595+0000 7f7f2b7fe700 10 librbd::image::RefreshParentRequest: 0x7f7f24004ae0 send_open_parent 2023-12-22T08:31:46.618+0000 7f7f2b7fe700 5 librbd::io::ImageRequestWQ: 0x7f7f24049f10 ImageRequestWQ: ictx=0x7f7f24004c10 2023-12-22T08:31:46.618+0000 7f7f2b7fe700 10 librbd::image::OpenRequest: 0x7f7f24047da0 send_v2_get_name 2023-12-22T08:31:46.618+0000 7f7f2b7fe700 20 librbd::io::AsyncOperation: 0x7f7f24002668 finish_op 2023-12-22T08:31:46.618+0000 7f7f2bfff700 10 librbd::image::OpenRequest: handle_v2_get_name: r=-2 2023-12-22T08:31:46.618+0000 7f7f2bfff700 10 librbd::image::OpenRequest: image id dddf576ad516ec does not exist in rbd directory, searching in rbd trash... 2023-12-22T08:31:46.618+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f24047da0 send_v2_get_name_from_trash 2023-12-22T08:31:46.619+0000 7f7f2bfff700 10 librbd::image::OpenRequest: handle_v2_get_name_from_trash: r=-2 2023-12-22T08:31:46.619+0000 7f7f2bfff700 5 librbd::image::OpenRequest: failed to retrieve name for image id dddf576ad516ec 2023-12-22T08:31:46.619+0000 7f7f2bfff700 10 librbd::image::OpenRequest: 0x7f7f24047da0 send_close_image 2023-12-22T08:31:46.619+0000 7f7f2bfff700 10 librbd::image::CloseRequest: 0x7f7f1c076fe0 send_shut_down_update_watchers 2023-12-22T08:31:46.619+0000 7f7f2bfff700 20 librbd::ImageState: 0x7f7f24048060 shut_down_update_watchers 2023-12-22T08:31:46.619+0000 7f7f2bfff700 20 librbd::ImageState: 0x7f7f24048330 ImageUpdateWatchers::shut_down 2023-12-22T08:31:46.619+0000 7f7f2bfff700 20 librbd::ImageState: 0x7f7f24048330 ImageUpdateWatchers::shut_down: completing shut down
Updated by yite gu 4 months ago
csi-snap-ad37e254-9fb4-11ee-a46b-7ab9ec75308b clone from csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b
# rbd -p replicapool-ssd children csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b replicapool-ssd/csi-snap-ad37e254-9fb4-11ee-a46b-7ab9ec75308b
csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b info as below:
# rbd -p replicapool-ssd info csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b
rbd image 'csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b':
size 94 GiB in 24064 objects
order 22 (4 MiB objects)
snapshot_count: 1
id: dddf57aa5a5a3a
block_name_prefix: rbd_data.dddf57aa5a5a3a
format: 2
features: layering, operations
op_features: clone-parent, clone-child, snap-trash
flags:
create_timestamp: Thu Dec 21 03:53:03 2023
access_timestamp: Thu Dec 21 03:53:03 2023
modify_timestamp: Thu Dec 21 03:53:03 2023
I want to open csi-snap-ad37e254-9fb4-11ee-a46b-7ab9ec75308b, but fail:
# rbd -p replicapool-ssd children csi-snap-ad37e254-9fb4-11ee-a46b-7ab9ec75308b 2023-12-22T08:03:40.157+0000 7f71b4ff9700 -1 librbd::image::RefreshParentRequest: failed to open parent image: (2) No such file or directory 2023-12-22T08:03:40.157+0000 7f71b4ff9700 -1 librbd::image::SetSnapRequest: failed to refresh snapshot parent: (2) No such file or directory 2023-12-22T08:03:40.157+0000 7f71b4ff9700 -1 librbd::image::OpenRequest: failed to set image snapshot: (2) No such file or directory 2023-12-22T08:03:40.157+0000 7f71b4ff9700 -1 librbd::image::RefreshParentRequest: failed to open parent image: (2) No such file or directory 2023-12-22T08:03:40.157+0000 7f71b4ff9700 -1 librbd::image::RefreshRequest: failed to refresh parent image: (2) No such file or directory 2023-12-22T08:03:40.157+0000 7f71b4ff9700 -1 librbd::image::OpenRequest: failed to refresh image: (2) No such file or directory rbd: error opening image csi-snap-ad37e254-9fb4-11ee-a46b-7ab9ec75308b: (2) No such file or directory
I set debug_rbd to 20, it want to find csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b's parent, but it not exist in rbd directory and trash.
Updated by yite gu 4 months ago
the same issue as https://tracker.ceph.com/issues/52810
Updated by yite gu 4 months ago
restore step:
1. remove parent key
# rados -p replicapool-ssd rmomapkey rbd_header.dddf57aa5a5a3a parent
2. open csi-snap-ad37e254-9fb4-11ee-a46b-7ab9ec75308b success.
# rbd -p replicapool-ssd info csi-snap-ad37e254-9fb4-11ee-a46b-7ab9ec75308b
rbd image 'csi-snap-ad37e254-9fb4-11ee-a46b-7ab9ec75308b':
size 94 GiB in 24064 objects
order 22 (4 MiB objects)
snapshot_count: 1
id: dddf572dfa189a
block_name_prefix: rbd_data.dddf572dfa189a
format: 2
features: layering, deep-flatten, operations
op_features: clone-parent, clone-child
flags:
create_timestamp: Thu Dec 21 03:54:44 2023
access_timestamp: Thu Dec 21 03:54:44 2023
modify_timestamp: Thu Dec 21 03:54:44 2023
parent: replicapool-ssd/csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b@2e13d4ed-f447-41c0-8731-aad6bc522086
overlap: 94 GiB
Updated by Ilya Dryomov 4 months ago
- Status changed from New to Need More Info
- Assignee set to Ilya Dryomov
yite gu wrote:
Why csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b have clone-child, but parent image already not exist.
Hi Yite,
It looks like a bug, but it's hard to tell what lead to it -- you are just dealing with the consequence here. To investigate, we would need to know the entire history of this parent/child image chain (including trash and flatten operations), whether any of those returned an error or suffered from an abrupt interruption in the past, etc.
the same issue as https://tracker.ceph.com/issues/52810
I don't think it's the same issue. https://tracker.ceph.com/issues/52810 was a race condition where "rbd info" could fail sporadically but always complete successfully on rerun. This isn't the case here: "rbd info" on csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b succeeds, but doesn't show "parent" and "overlap" fields despite "parent" key apparently being there on the image header. IIRC this can happen when the overlap becomes 0. Was csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b ever resized, specifically shrunk to 0?
Updated by yite gu 4 months ago
Yes, Now it seems that I also don't think it's the same issue. sorry, I can't find the logs indicating whether there were any errors or interruptions at that time, but I can confirm the user's operational process at that time:
1. create vm a, vm a have system disk rbd a 2. shutdown vm a 3. clone rbd b from rbd a, and flatten b 4. delete rbd a 5. rbd b as new vm OS image 5. clone rbd c from rbd b, and rbd c as system disk of vm a 6. start vm a
Updated by yite gu 4 months ago
Ilya Dryomov wrote:
I don't think it's the same issue. https://tracker.ceph.com/issues/52810 was a race condition where "rbd info" could fail sporadically but always complete successfully on rerun. This isn't the case here: "rbd info" on csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b succeeds, but doesn't show "parent" and "overlap" fields despite "parent" key apparently being there on the image header. IIRC this can happen when the overlap becomes 0. Was csi-vol-7136789b-9fb4-11ee-a46b-7ab9ec75308b ever resized, specifically shrunk to 0?
haven't resize operation.
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