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journal: added csi.volume.backingsnapshotid image attribute

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Signed-off-by: Robert Vasek <robert.vasek@cern.ch>
This commit is contained in:
Robert Vasek 2022-04-06 14:39:40 +02:00 committed by mergify[bot]
parent f7a9558728
commit 0807fd2e6c
3 changed files with 45 additions and 28 deletions
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37
internal/cephfs/store/fsjournal.go
View File

@ -100,7 +100,7 @@ func CheckVolExists(ctx context.Context,
volOptions.VolID = vid.FsSubvolName
vol := core.NewSubVolume(volOptions.conn, &volOptions.SubVolume, volOptions.ClusterID)
if sID != nil || pvID != nil {
if (sID != nil || pvID != nil) && imageData.ImageAttributes.BackingSnapshotID == "" {
cloneState, cloneStateErr := vol.GetCloneState(ctx)
if cloneStateErr != nil {
if errors.Is(cloneStateErr, cerrors.ErrVolumeNotFound) {
@ -153,25 +153,28 @@ func CheckVolExists(ctx context.Context,
return nil, fmt.Errorf("clone is not in complete state for %s", vid.FsSubvolName)
}
}
volOptions.RootPath, err = vol.GetVolumeRootPathCeph(ctx)
if err != nil {
if errors.Is(err, cerrors.ErrVolumeNotFound) {
// If the subvolume is not present, cleanup the stale snapshot
// created for clone.
if parentVolOpt != nil && pvID != nil {
err = vol.CleanupSnapshotFromSubvolume(
ctx, &parentVolOpt.SubVolume)
if err != nil {
return nil, err
if imageData.ImageAttributes.BackingSnapshotID == "" {
volOptions.RootPath, err = vol.GetVolumeRootPathCeph(ctx)
if err != nil {
if errors.Is(err, cerrors.ErrVolumeNotFound) {
// If the subvolume is not present, cleanup the stale snapshot
// created for clone.
if parentVolOpt != nil && pvID != nil {
err = vol.CleanupSnapshotFromSubvolume(
ctx, &parentVolOpt.SubVolume)
if err != nil {
return nil, err
}
}
err = j.UndoReservation(ctx, volOptions.MetadataPool,
volOptions.MetadataPool, vid.FsSubvolName, volOptions.RequestName)
return nil, err
}
err = j.UndoReservation(ctx, volOptions.MetadataPool,
volOptions.MetadataPool, vid.FsSubvolName, volOptions.RequestName)
return nil, err
}
return nil, err
}
// check if topology constraints match what is found
@ -271,7 +274,7 @@ func ReserveVol(ctx context.Context, volOptions *VolumeOptions, secret map[strin
imageUUID, vid.FsSubvolName, err = j.ReserveName(
ctx, volOptions.MetadataPool, util.InvalidPoolID,
volOptions.MetadataPool, util.InvalidPoolID, volOptions.RequestName,
volOptions.NamePrefix, "", "", volOptions.ReservedID, "")
volOptions.NamePrefix, "", "", volOptions.ReservedID, "", volOptions.BackingSnapshotID)
if err != nil {
return nil, err
}
@ -314,7 +317,7 @@ func ReserveSnap(
imageUUID, vid.FsSnapshotName, err = j.ReserveName(
ctx, volOptions.MetadataPool, util.InvalidPoolID,
volOptions.MetadataPool, util.InvalidPoolID, snap.RequestName,
snap.NamePrefix, parentSubVolName, "", snap.ReservedID, "")
snap.NamePrefix, parentSubVolName, "", snap.ReservedID, "", "")
if err != nil {
return nil, err
}

30
internal/journal/voljournal.go
View File

@ -152,6 +152,9 @@ 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 string
// commonPrefix is the prefix common to all omap keys for this Config
commonPrefix string
}
@ -170,6 +173,7 @@ func NewCSIVolumeJournal(suffix string) *Config {
csiImageIDKey: "csi.imageid",
encryptKMSKey: "csi.volume.encryptKMS",
ownerKey: "csi.volume.owner",
backingSnapshotIDKey: "csi.volume.backingsnapshotid",
commonPrefix: "csi.",
}
}
@ -528,6 +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)
Return values:
- string: Contains the UUID that was reserved for the passed in reqName
@ -537,7 +542,8 @@ Return values:
func (conn *Connection) ReserveName(ctx context.Context,
journalPool string, journalPoolID int64,
imagePool string, imagePoolID int64,
reqName, namePrefix, parentName, kmsConf, volUUID, owner string,
reqName, namePrefix, parentName, kmsConf, volUUID, owner,
backingSnapshotID string,
) (string, string, error) {
// TODO: Take in-arg as ImageAttributes?
var (
@ -639,6 +645,11 @@ func (conn *Connection) ReserveName(ctx context.Context,
omapValues[cj.cephSnapSourceKey] = parentName
}
// Update backing snapshot ID for shallow CephFS volume
if backingSnapshotID != "" {
omapValues[cj.backingSnapshotIDKey] = backingSnapshotID
}
err = setOMapKeys(ctx, conn, journalPool, cj.namespace, oid, omapValues)
if err != nil {
return "", "", err
@ -649,13 +660,14 @@ func (conn *Connection) ReserveName(ctx context.Context,
// ImageAttributes contains all CSI stored image attributes, typically as OMap keys.
type ImageAttributes struct {
RequestName string // Contains the request name for the passed in UUID
SourceName string // Contains the parent image name for the passed in UUID, if it is a snapshot
ImageName string // Contains the image or subvolume name for the passed in UUID
KmsID string // Contains encryption KMS, if it is an encrypted image
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)
RequestName string // Contains the request name for the passed in UUID
SourceName string // Contains the parent image name for the passed in UUID, if it is a snapshot
ImageName string // Contains the image or subvolume name for the passed in UUID
KmsID string // Contains encryption KMS, if it is an encrypted image
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
}
// GetImageAttributes fetches all keys and their values, from a UUID directory, returning ImageAttributes structure.
@ -684,6 +696,7 @@ func (conn *Connection) GetImageAttributes(
cj.cephSnapSourceKey,
cj.csiImageIDKey,
cj.ownerKey,
cj.backingSnapshotIDKey,
}
values, err := getOMapValues(
ctx, conn, pool, cj.namespace, cj.cephUUIDDirectoryPrefix+objectUUID,
@ -700,6 +713,7 @@ func (conn *Connection) GetImageAttributes(
imageAttributes.KmsID = values[cj.encryptKMSKey]
imageAttributes.Owner = values[cj.ownerKey]
imageAttributes.ImageID = values[cj.csiImageIDKey]
imageAttributes.BackingSnapshotID = values[cj.backingSnapshotIDKey]
// image key was added at a later point, so not all volumes will have this
// key set when ceph-csi was upgraded

6
internal/rbd/rbd_journal.go
View File

@ -393,7 +393,7 @@ func reserveSnap(ctx context.Context, rbdSnap *rbdSnapshot, rbdVol *rbdVolume, c
rbdSnap.ReservedID, rbdSnap.RbdSnapName, err = j.ReserveName(
ctx, rbdSnap.JournalPool, journalPoolID, rbdSnap.Pool, imagePoolID,
rbdSnap.RequestName, rbdSnap.NamePrefix, rbdVol.RbdImageName, kmsID, rbdSnap.ReservedID, rbdVol.Owner)
rbdSnap.RequestName, rbdSnap.NamePrefix, rbdVol.RbdImageName, kmsID, rbdSnap.ReservedID, rbdVol.Owner, "")
if err != nil {
return err
}
@ -473,7 +473,7 @@ func reserveVol(ctx context.Context, rbdVol *rbdVolume, rbdSnap *rbdSnapshot, cr
rbdVol.ReservedID, rbdVol.RbdImageName, err = j.ReserveName(
ctx, rbdVol.JournalPool, journalPoolID, rbdVol.Pool, imagePoolID,
rbdVol.RequestName, rbdVol.NamePrefix, "", kmsID, rbdVol.ReservedID, rbdVol.Owner)
rbdVol.RequestName, rbdVol.NamePrefix, "", kmsID, rbdVol.ReservedID, rbdVol.Owner, "")
if err != nil {
return err
}
@ -637,7 +637,7 @@ func RegenerateJournal(
rbdVol.ReservedID, rbdVol.RbdImageName, err = j.ReserveName(
ctx, rbdVol.JournalPool, journalPoolID, rbdVol.Pool, imagePoolID,
rbdVol.RequestName, rbdVol.NamePrefix, "", kmsID, vi.ObjectUUID, rbdVol.Owner)
rbdVol.RequestName, rbdVol.NamePrefix, "", kmsID, vi.ObjectUUID, rbdVol.Owner, "")
if err != nil {
return "", err
}