mirrors/ceph-csi
1
0
Fork 0
mirror of https://github.com/ceph/ceph-csi.git synced 2025-06-13 02:33:34 +00:00
Code Issues Packages Projects Releases Wiki Activity

cephfs: added support for snapshot-backed volumes

Browse Source 
This commit implements most of
docs/design/proposals/cephfs-snapshot-shallow-ro-vol.md design document;
specifically (de-)provisioning of snapshot-backed volumes, mounting such
volumes as well as mounting pre-provisioned snapshot-backed volumes.

Signed-off-by: Robert Vasek <robert.vasek@cern.ch>
This commit is contained in:
Robert Vasek
2022-04-06 15:26:07 +02:00
committed by mergify[bot]
parent 0807fd2e6c
commit fd7559a903
7 changed files with 710 additions and 107 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
internal/journal/voljournal.go
View File

@ -152,7 +152,7 @@ type Config struct {
// ownerKey is used to identify the owner of the volume, can be used with some KMS configurations
ownerKey string
// backingSnapshotIDKey is snapshot ID on which a shallow CephFS volume is based.
// backingSnapshotIDKey ID of the snapshot on which the CephFS snapshot-backed volume is based
backingSnapshotIDKey string
// commonPrefix is the prefix common to all omap keys for this Config
@ -532,7 +532,7 @@ Input arguments:
- kmsConf: Name of the key management service used to encrypt the image (optional)
- volUUID: UUID need to be reserved instead of auto-generating one (this is useful for mirroring and metro-DR)
- owner: the owner of the volume (optional)
- backingSnapshotID: (optional)
- backingSnapshotID: ID of the snapshot on which the CephFS snapshot-backed volume is based (optional)
Return values:
- string: Contains the UUID that was reserved for the passed in reqName
@ -645,7 +645,7 @@ func (conn *Connection) ReserveName(ctx context.Context,
omapValues[cj.cephSnapSourceKey] = parentName
}
// Update backing snapshot ID for shallow CephFS volume
// Update backing snapshot ID for snapshot-backed CephFS volume
if backingSnapshotID != "" {
omapValues[cj.backingSnapshotIDKey] = backingSnapshotID
}
@ -667,7 +667,7 @@ type ImageAttributes struct {
Owner string // Contains the owner to be used in combination with KmsID (for some KMS)
ImageID string // Contains the image id
JournalPoolID int64 // Pool ID of the CSI journal pool, stored in big endian format (on-disk data)
BackingSnapshotID string // ID of the backing snapshot of a shallow CephFS volume
BackingSnapshotID string // ID of the snapshot on which the CephFS snapshot-backed volume is based
}
// GetImageAttributes fetches all keys and their values, from a UUID directory, returning ImageAttributes structure.