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rbd: set scheduling interval on snapshot mirrored image

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Mirror-snapshots can also be automatically created on a
periodic basis if mirror-snapshot schedules are defined.
The mirror-snapshot can be scheduled globally, per-pool,
or per-image levels. Multiple mirror-snapshot schedules
can be defined at any level.

To create a mirror-snapshot schedule with rbd, specify
the mirror snapshot schedule add command along with an
optional pool or image name; interval; and optional start time:

The interval can be specified in days, hours, or minutes
using d, h, m suffix respectively. The optional start-time
can be specified using the ISO 8601 time format. For example:

```
$ rbd --cluster site-a mirror snapshot schedule
  add --pool image-pool --image image1 24h 14:00:00-05:00
```

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna
2021-06-28 17:08:42 +05:30
committed by mergify[bot]
parent b1710f4c53
commit 0837c05be0
3 changed files with 277 additions and 0 deletions
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39
internal/rbd/rbd_util.go
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@ -32,6 +32,7 @@ import (
"github.com/ceph/go-ceph/rados"
librbd "github.com/ceph/go-ceph/rbd"
"github.com/ceph/go-ceph/rbd/admin"
"github.com/container-storage-interface/spec/lib/go/csi"
"github.com/golang/protobuf/ptypes"
"github.com/golang/protobuf/ptypes/timestamp"
@ -1733,3 +1734,41 @@ func (rs *rbdSnapshot) isCompatibleThickProvision(dst *rbdVolume) error {
return nil
}
func (ri *rbdImage) addSnapshotScheduling(
interval admin.Interval,
startTime admin.StartTime) error {
ls := admin.NewLevelSpec(ri.Pool, ri.RadosNamespace, ri.RbdImageName)
ra, err := ri.conn.GetRBDAdmin()
if err != nil {
return err
}
adminConn := ra.MirrorSnashotSchedule()
// list all the snapshot scheduling and check at least one image scheduling
// exists with specified interval.
ssList, err := adminConn.List(ls)
if err != nil {
return err
}
for _, ss := range ssList {
// make sure we are matching image level scheduling. The
// `adminConn.List` lists the global level scheduling also.
if ss.Name == ri.String() {
for _, s := range ss.Schedule {
// TODO: Add support to check start time also.
// The start time is currently stored with different format
// in ceph. Comparison is not possible unless we know in
// which format ceph is storing it.
if s.Interval == interval {
return err
}
}
}
}
err = adminConn.Add(ls, interval, startTime)
if err != nil {
return err
}
return nil
}